/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/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:35:20,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:35:20,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:35:20,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:35:20,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:35:20,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:35:20,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:35:20,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:35:20,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:35:20,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:35:20,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:35:20,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:35:20,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:35:20,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:35:20,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:35:20,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:35:20,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:35:20,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:35:20,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:35:20,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:35:20,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:35:20,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:35:20,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:35:20,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:35:20,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:35:20,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:35:20,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:35:20,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:35:20,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:35:20,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:35:20,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:35:20,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:35:20,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:35:20,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:35:20,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:35:20,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:35:20,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:35:20,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:35:20,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:35:20,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:35:20,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:35:20,792 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 02:35:20,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:35:20,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:35:20,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:35:20,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:35:20,816 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:35:20,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:35:20,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:35:20,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:35:20,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:35:20,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:35:20,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:35:20,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:35:20,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:35:20,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:35:20,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:35:20,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:35:20,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:35:20,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:35:20,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:35:20,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:35:20,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:35:20,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:35:20,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:35:20,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:35:20,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:35:20,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:35:20,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:35:20,822 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:35:20,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:35:20,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:35:21,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:35:21,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:35:21,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:35:21,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:35:21,112 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:35:21,113 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-04-18 02:35:21,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e7c2a14/607385aff20e4b969680a06edf6eea83/FLAGb2af89ada [2020-04-18 02:35:21,752 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:35:21,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-04-18 02:35:21,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e7c2a14/607385aff20e4b969680a06edf6eea83/FLAGb2af89ada [2020-04-18 02:35:22,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e7c2a14/607385aff20e4b969680a06edf6eea83 [2020-04-18 02:35:22,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:35:22,097 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:35:22,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:35:22,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:35:22,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:35:22,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d48360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22, skipping insertion in model container [2020-04-18 02:35:22,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:35:22,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:35:22,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:35:22,623 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:35:22,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:35:22,747 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:35:22,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22 WrapperNode [2020-04-18 02:35:22,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:35:22,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:35:22,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:35:22,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:35:22,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:35:22,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:35:22,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:35:22,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:35:22,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (1/1) ... [2020-04-18 02:35:22,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:35:22,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:35:22,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:35:22,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:35:22,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (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 02:35:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:35:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:35:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:35:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:35:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:35:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:35:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:35:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:35:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:35:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:35:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:35:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:35:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:35:22,896 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 02:35:23,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:35:23,321 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:35:23,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:35:23 BoogieIcfgContainer [2020-04-18 02:35:23,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:35:23,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:35:23,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:35:23,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:35:23,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:35:22" (1/3) ... [2020-04-18 02:35:23,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2887af8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:35:23, skipping insertion in model container [2020-04-18 02:35:23,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:35:22" (2/3) ... [2020-04-18 02:35:23,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2887af8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:35:23, skipping insertion in model container [2020-04-18 02:35:23,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:35:23" (3/3) ... [2020-04-18 02:35:23,337 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-04-18 02:35:23,346 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:35:23,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:35:23,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:35:23,354 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:35:23,384 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,385 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,385 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,386 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,386 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,387 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,388 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,388 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,388 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,389 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,389 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,389 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,390 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,391 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,391 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,391 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,392 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,393 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,399 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,400 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,400 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,400 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,413 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,413 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,413 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,414 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,424 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,424 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,425 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,425 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:35:23,442 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:35:23,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:35:23,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:35:23,464 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:35:23,464 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:35:23,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:35:23,464 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:35:23,465 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:35:23,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:35:23,481 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:35:23,484 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:35:23,529 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:35:23,529 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:35:23,535 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:35:23,538 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:35:23,558 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:35:23,559 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:35:23,559 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 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. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:35:23,561 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:35:23,563 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:35:24,983 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-18 02:35:25,127 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:35:25,218 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 02:35:25,219 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:35:25,224 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:35:25,260 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:35:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:35:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:35:25,273 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:25,275 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:25,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:25,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 02:35:25,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:25,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461939839] [2020-04-18 02:35:25,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:25,688 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 02:35:25,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461939839] [2020-04-18 02:35:25,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:25,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:35:25,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995042858] [2020-04-18 02:35:25,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:35:25,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:25,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:35:25,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:25,725 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:35:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:25,799 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:35:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:35:25,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:35:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:25,834 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:35:25,835 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:35:25,836 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:35:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:35:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:35:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:35:25,904 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:35:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:25,906 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:35:25,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:35:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:35:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:35:25,908 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:25,908 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:25,908 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:25,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1925985154, now seen corresponding path program 1 times [2020-04-18 02:35:25,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:25,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069313493] [2020-04-18 02:35:25,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:35:25,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069313493] [2020-04-18 02:35:25,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:25,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:35:25,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732002956] [2020-04-18 02:35:25,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:35:25,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:25,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:35:25,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:25,991 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-18 02:35:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:26,011 INFO L93 Difference]: Finished difference Result 284 states and 746 transitions. [2020-04-18 02:35:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:35:26,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:35:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:26,014 INFO L225 Difference]: With dead ends: 284 [2020-04-18 02:35:26,014 INFO L226 Difference]: Without dead ends: 164 [2020-04-18 02:35:26,015 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-04-18 02:35:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-04-18 02:35:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-04-18 02:35:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-04-18 02:35:26,032 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 10 [2020-04-18 02:35:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:26,032 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-04-18 02:35:26,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:35:26,032 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-04-18 02:35:26,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:35:26,034 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:26,034 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:26,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:26,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:26,035 INFO L82 PathProgramCache]: Analyzing trace with hash -424003265, now seen corresponding path program 1 times [2020-04-18 02:35:26,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:26,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131029036] [2020-04-18 02:35:26,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:26,091 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 02:35:26,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131029036] [2020-04-18 02:35:26,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:26,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:35:26,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377039695] [2020-04-18 02:35:26,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:35:26,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:35:26,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:26,094 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 3 states. [2020-04-18 02:35:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:26,107 INFO L93 Difference]: Finished difference Result 158 states and 403 transitions. [2020-04-18 02:35:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:35:26,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-18 02:35:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:26,111 INFO L225 Difference]: With dead ends: 158 [2020-04-18 02:35:26,111 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 02:35:26,112 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:35:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 02:35:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 02:35:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 02:35:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 403 transitions. [2020-04-18 02:35:26,139 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 403 transitions. Word has length 11 [2020-04-18 02:35:26,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:26,139 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 403 transitions. [2020-04-18 02:35:26,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:35:26,139 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 403 transitions. [2020-04-18 02:35:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:35:26,144 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:26,144 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:26,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:26,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:26,145 INFO L82 PathProgramCache]: Analyzing trace with hash -259200532, now seen corresponding path program 1 times [2020-04-18 02:35:26,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:26,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780169617] [2020-04-18 02:35:26,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:26,252 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 02:35:26,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780169617] [2020-04-18 02:35:26,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:26,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:35:26,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987044919] [2020-04-18 02:35:26,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:35:26,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:26,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:35:26,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:35:26,256 INFO L87 Difference]: Start difference. First operand 158 states and 403 transitions. Second operand 4 states. [2020-04-18 02:35:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:26,292 INFO L93 Difference]: Finished difference Result 188 states and 468 transitions. [2020-04-18 02:35:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:35:26,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:35:26,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:26,294 INFO L225 Difference]: With dead ends: 188 [2020-04-18 02:35:26,294 INFO L226 Difference]: Without dead ends: 110 [2020-04-18 02:35:26,294 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 02:35:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-04-18 02:35:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-04-18 02:35:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-04-18 02:35:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-04-18 02:35:26,303 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 12 [2020-04-18 02:35:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:26,304 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-04-18 02:35:26,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:35:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-04-18 02:35:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:35:26,308 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:26,308 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:26,309 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:26,309 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-04-18 02:35:26,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:26,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774551782] [2020-04-18 02:35:26,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:26,396 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 02:35:26,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774551782] [2020-04-18 02:35:26,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:26,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:35:26,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242764510] [2020-04-18 02:35:26,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:35:26,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:26,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:35:26,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:35:26,399 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-04-18 02:35:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:26,445 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-04-18 02:35:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:35:26,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:35:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:26,446 INFO L225 Difference]: With dead ends: 128 [2020-04-18 02:35:26,446 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 02:35:26,447 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 02:35:26,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 02:35:26,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 02:35:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 02:35:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-04-18 02:35:26,453 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-04-18 02:35:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:26,454 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-04-18 02:35:26,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:35:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-04-18 02:35:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:35:26,455 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:26,455 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:26,455 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:26,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:26,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-04-18 02:35:26,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:26,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287257729] [2020-04-18 02:35:26,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:26,519 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 02:35:26,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287257729] [2020-04-18 02:35:26,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:26,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:35:26,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070962706] [2020-04-18 02:35:26,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:35:26,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:26,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:35:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:35:26,522 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 5 states. [2020-04-18 02:35:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:26,586 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-04-18 02:35:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:35:26,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:35:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:26,587 INFO L225 Difference]: With dead ends: 99 [2020-04-18 02:35:26,588 INFO L226 Difference]: Without dead ends: 79 [2020-04-18 02:35:26,588 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 02:35:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-04-18 02:35:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-04-18 02:35:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-04-18 02:35:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-04-18 02:35:26,593 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-04-18 02:35:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:26,593 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-04-18 02:35:26,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:35:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-04-18 02:35:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:35:26,594 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:26,595 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:26,595 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:26,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:26,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-04-18 02:35:26,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:26,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433923104] [2020-04-18 02:35:26,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:26,651 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 02:35:26,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433923104] [2020-04-18 02:35:26,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:26,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:35:26,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837536329] [2020-04-18 02:35:26,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:35:26,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:26,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:35:26,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:35:26,653 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 6 states. [2020-04-18 02:35:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:26,726 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-04-18 02:35:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:35:26,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:35:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:26,745 INFO L225 Difference]: With dead ends: 76 [2020-04-18 02:35:26,745 INFO L226 Difference]: Without dead ends: 69 [2020-04-18 02:35:26,745 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 02:35:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-18 02:35:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-18 02:35:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-18 02:35:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-04-18 02:35:26,749 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-04-18 02:35:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:26,749 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-04-18 02:35:26,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:35:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-04-18 02:35:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:35:26,750 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:35:26,750 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:35:26,750 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:35:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:35:26,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 02:35:26,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:35:26,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115004696] [2020-04-18 02:35:26,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:35:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:35:26,806 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 02:35:26,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115004696] [2020-04-18 02:35:26,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:35:26,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:35:26,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791131553] [2020-04-18 02:35:26,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:35:26,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:35:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:35:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:35:26,810 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-04-18 02:35:26,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:35:26,828 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-04-18 02:35:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:35:26,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:35:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:35:26,828 INFO L225 Difference]: With dead ends: 68 [2020-04-18 02:35:26,828 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:35:26,829 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:35:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:35:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:35:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:35:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:35:26,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:35:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:35:26,830 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:35:26,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:35:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:35:26,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:35:26,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:35:26 BasicIcfg [2020-04-18 02:35:26,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:35:26,835 INFO L168 Benchmark]: Toolchain (without parser) took 4759.66 ms. Allocated memory was 145.2 MB in the beginning and 246.4 MB in the end (delta: 101.2 MB). Free memory was 100.1 MB in the beginning and 202.8 MB in the end (delta: -102.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:35:26,838 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:35:26,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 650.04 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 98.2 MB in the beginning and 159.4 MB in the end (delta: -61.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:26,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.69 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 157.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:26,845 INFO L168 Benchmark]: Boogie Preprocessor took 28.60 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:26,847 INFO L168 Benchmark]: RCFGBuilder took 498.98 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 133.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:35:26,848 INFO L168 Benchmark]: TraceAbstraction took 3504.16 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 133.1 MB in the beginning and 202.8 MB in the end (delta: -69.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:35:26,859 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 650.04 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 98.2 MB in the beginning and 159.4 MB in the end (delta: -61.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.69 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 157.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.60 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 498.98 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 133.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3504.16 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 133.1 MB in the beginning and 202.8 MB in the end (delta: -69.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 149 SDtfs, 116 SDslu, 168 SDs, 0 SdLazy, 105 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3024 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...