/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 00:03:29,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 00:03:29,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 00:03:29,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 00:03:29,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 00:03:29,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 00:03:29,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 00:03:29,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 00:03:29,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 00:03:29,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 00:03:29,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 00:03:29,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 00:03:29,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 00:03:29,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 00:03:29,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 00:03:29,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 00:03:29,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 00:03:29,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 00:03:29,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 00:03:29,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 00:03:29,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 00:03:29,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 00:03:29,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 00:03:29,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 00:03:29,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 00:03:29,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 00:03:29,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 00:03:29,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 00:03:29,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 00:03:29,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 00:03:29,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 00:03:29,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 00:03:29,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 00:03:29,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 00:03:29,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 00:03:29,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 00:03:29,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 00:03:29,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 00:03:29,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 00:03:29,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 00:03:29,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 00:03:29,925 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 00:03:29,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 00:03:29,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 00:03:29,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 00:03:29,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 00:03:29,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 00:03:29,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 00:03:29,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 00:03:29,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 00:03:29,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 00:03:29,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 00:03:29,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 00:03:29,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 00:03:29,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 00:03:29,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 00:03:29,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 00:03:29,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 00:03:29,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:03:29,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 00:03:29,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 00:03:29,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 00:03:29,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 00:03:29,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 00:03:29,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 00:03:29,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 00:03:29,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 00:03:30,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 00:03:30,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 00:03:30,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 00:03:30,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 00:03:30,407 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 00:03:30,408 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-09-17 00:03:30,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ac0ec3c/3e82e839eec549068ae72f7988e69ceb/FLAG55d0ed9b4 [2020-09-17 00:03:31,142 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 00:03:31,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-09-17 00:03:31,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ac0ec3c/3e82e839eec549068ae72f7988e69ceb/FLAG55d0ed9b4 [2020-09-17 00:03:31,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ac0ec3c/3e82e839eec549068ae72f7988e69ceb [2020-09-17 00:03:31,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 00:03:31,423 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 00:03:31,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 00:03:31,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 00:03:31,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 00:03:31,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:03:31" (1/1) ... [2020-09-17 00:03:31,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1187d8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:31, skipping insertion in model container [2020-09-17 00:03:31,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:03:31" (1/1) ... [2020-09-17 00:03:31,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 00:03:31,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 00:03:32,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:03:32,103 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 00:03:32,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:03:32,271 INFO L208 MainTranslator]: Completed translation [2020-09-17 00:03:32,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32 WrapperNode [2020-09-17 00:03:32,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 00:03:32,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 00:03:32,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 00:03:32,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 00:03:32,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 00:03:32,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 00:03:32,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 00:03:32,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 00:03:32,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (1/1) ... [2020-09-17 00:03:32,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 00:03:32,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 00:03:32,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 00:03:32,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 00:03:32,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (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 [2020-09-17 00:03:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 00:03:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 00:03:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 00:03:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 00:03:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 00:03:32,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 00:03:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 00:03:32,474 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 00:03:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 00:03:32,474 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 00:03:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-17 00:03:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-17 00:03:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 00:03:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 00:03:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 00:03:32,478 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 00:03:32,852 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 00:03:32,853 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 00:03:32,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:03:32 BoogieIcfgContainer [2020-09-17 00:03:32,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 00:03:32,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 00:03:32,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 00:03:32,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 00:03:32,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 12:03:31" (1/3) ... [2020-09-17 00:03:32,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728cab28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:03:32, skipping insertion in model container [2020-09-17 00:03:32,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:03:32" (2/3) ... [2020-09-17 00:03:32,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728cab28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:03:32, skipping insertion in model container [2020-09-17 00:03:32,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:03:32" (3/3) ... [2020-09-17 00:03:32,869 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-09-17 00:03:32,881 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 00:03:32,882 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 00:03:32,892 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 00:03:32,894 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 00:03:32,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,935 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,935 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,937 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,937 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,940 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,941 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,941 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,941 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,942 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,942 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,946 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,947 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,947 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,947 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,956 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,956 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,958 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:03:32,998 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-17 00:03:33,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 00:03:33,023 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 00:03:33,023 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 00:03:33,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 00:03:33,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 00:03:33,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 00:03:33,024 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 00:03:33,024 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 00:03:33,042 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-17 00:03:33,045 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-17 00:03:33,101 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-17 00:03:33,102 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:03:33,108 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-17 00:03:33,111 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-17 00:03:33,136 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-17 00:03:33,136 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:03:33,137 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-17 00:03:33,139 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-17 00:03:33,141 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 00:03:35,029 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-17 00:03:35,029 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-17 00:03:35,034 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-17 00:03:35,096 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-17 00:03:35,099 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-17 00:03:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 00:03:35,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:35,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:35,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:35,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-17 00:03:35,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:35,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110086937] [2020-09-17 00:03:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:35,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110086937] [2020-09-17 00:03:35,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:35,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:03:35,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791877457] [2020-09-17 00:03:35,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-17 00:03:35,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:35,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-17 00:03:35,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 00:03:35,382 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-17 00:03:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:35,441 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-17 00:03:35,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-17 00:03:35,443 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-17 00:03:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:35,476 INFO L225 Difference]: With dead ends: 850 [2020-09-17 00:03:35,476 INFO L226 Difference]: Without dead ends: 706 [2020-09-17 00:03:35,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 00:03:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-17 00:03:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-17 00:03:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-17 00:03:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-17 00:03:35,599 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-17 00:03:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:35,601 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-17 00:03:35,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-17 00:03:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-17 00:03:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 00:03:35,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:35,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:35,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 00:03:35,605 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:35,606 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-17 00:03:35,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:35,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984266037] [2020-09-17 00:03:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:35,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984266037] [2020-09-17 00:03:35,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:35,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:03:35,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887350863] [2020-09-17 00:03:35,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:03:35,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:35,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:03:35,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:03:35,816 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-17 00:03:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:35,883 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-17 00:03:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:35,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-17 00:03:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:35,894 INFO L225 Difference]: With dead ends: 802 [2020-09-17 00:03:35,895 INFO L226 Difference]: Without dead ends: 658 [2020-09-17 00:03:35,896 INFO L675 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 [2020-09-17 00:03:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-17 00:03:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-17 00:03:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-17 00:03:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-17 00:03:35,962 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-17 00:03:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:35,962 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-17 00:03:35,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:03:35,963 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-17 00:03:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 00:03:35,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:35,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:35,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 00:03:35,971 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:35,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:35,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-09-17 00:03:35,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:35,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917651972] [2020-09-17 00:03:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:36,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917651972] [2020-09-17 00:03:36,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:36,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:03:36,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670265584] [2020-09-17 00:03:36,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:03:36,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:36,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:03:36,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:03:36,062 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-17 00:03:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:36,090 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-09-17 00:03:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:36,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 00:03:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:36,096 INFO L225 Difference]: With dead ends: 718 [2020-09-17 00:03:36,096 INFO L226 Difference]: Without dead ends: 598 [2020-09-17 00:03:36,097 INFO L675 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 [2020-09-17 00:03:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-09-17 00:03:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-09-17 00:03:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-09-17 00:03:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-09-17 00:03:36,119 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-09-17 00:03:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:36,119 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-09-17 00:03:36,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:03:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-09-17 00:03:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 00:03:36,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:36,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:36,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 00:03:36,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:36,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-09-17 00:03:36,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:36,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368880567] [2020-09-17 00:03:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:36,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368880567] [2020-09-17 00:03:36,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:36,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:03:36,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766895878] [2020-09-17 00:03:36,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:03:36,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:03:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:03:36,210 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-09-17 00:03:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:36,247 INFO L93 Difference]: Finished difference Result 668 states and 2153 transitions. [2020-09-17 00:03:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:36,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-17 00:03:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:36,252 INFO L225 Difference]: With dead ends: 668 [2020-09-17 00:03:36,253 INFO L226 Difference]: Without dead ends: 578 [2020-09-17 00:03:36,253 INFO L675 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 [2020-09-17 00:03:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-17 00:03:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-09-17 00:03:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-09-17 00:03:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-09-17 00:03:36,273 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-09-17 00:03:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:36,273 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-09-17 00:03:36,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:03:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-09-17 00:03:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:03:36,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:36,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:36,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 00:03:36,276 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-09-17 00:03:36,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:36,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669770652] [2020-09-17 00:03:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:36,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669770652] [2020-09-17 00:03:36,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:36,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:03:36,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483754323] [2020-09-17 00:03:36,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:03:36,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:36,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:03:36,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:03:36,339 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-09-17 00:03:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:36,379 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-09-17 00:03:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:36,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-17 00:03:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:36,384 INFO L225 Difference]: With dead ends: 814 [2020-09-17 00:03:36,384 INFO L226 Difference]: Without dead ends: 618 [2020-09-17 00:03:36,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:03:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-09-17 00:03:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-09-17 00:03:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-17 00:03:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-09-17 00:03:36,403 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-09-17 00:03:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:36,403 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-09-17 00:03:36,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:03:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-09-17 00:03:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:03:36,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:36,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:36,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 00:03:36,406 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-09-17 00:03:36,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:36,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029267040] [2020-09-17 00:03:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:36,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029267040] [2020-09-17 00:03:36,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:36,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:03:36,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781043824] [2020-09-17 00:03:36,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:03:36,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:36,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:03:36,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:03:36,481 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 5 states. [2020-09-17 00:03:36,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:36,555 INFO L93 Difference]: Finished difference Result 838 states and 2616 transitions. [2020-09-17 00:03:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:36,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-17 00:03:36,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:36,560 INFO L225 Difference]: With dead ends: 838 [2020-09-17 00:03:36,560 INFO L226 Difference]: Without dead ends: 490 [2020-09-17 00:03:36,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:03:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-17 00:03:36,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-09-17 00:03:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-17 00:03:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1516 transitions. [2020-09-17 00:03:36,580 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1516 transitions. Word has length 14 [2020-09-17 00:03:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:36,580 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 1516 transitions. [2020-09-17 00:03:36,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:03:36,581 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1516 transitions. [2020-09-17 00:03:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-17 00:03:36,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:36,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:36,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 00:03:36,582 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:36,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:36,583 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 2 times [2020-09-17 00:03:36,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:36,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337115782] [2020-09-17 00:03:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:36,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337115782] [2020-09-17 00:03:36,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:36,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:03:36,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702060714] [2020-09-17 00:03:36,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:03:36,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:36,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:03:36,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:03:36,671 INFO L87 Difference]: Start difference. First operand 490 states and 1516 transitions. Second operand 4 states. [2020-09-17 00:03:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:36,693 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-09-17 00:03:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:36,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-17 00:03:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:36,697 INFO L225 Difference]: With dead ends: 514 [2020-09-17 00:03:36,697 INFO L226 Difference]: Without dead ends: 466 [2020-09-17 00:03:36,698 INFO L675 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 [2020-09-17 00:03:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-17 00:03:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-09-17 00:03:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-09-17 00:03:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1428 transitions. [2020-09-17 00:03:36,713 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1428 transitions. Word has length 14 [2020-09-17 00:03:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:36,713 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1428 transitions. [2020-09-17 00:03:36,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:03:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1428 transitions. [2020-09-17 00:03:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:03:36,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:36,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:36,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 00:03:36,715 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:36,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-09-17 00:03:36,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:36,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830124820] [2020-09-17 00:03:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:36,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830124820] [2020-09-17 00:03:36,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:36,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:03:36,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798323371] [2020-09-17 00:03:36,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:03:36,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:03:36,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:03:36,783 INFO L87 Difference]: Start difference. First operand 466 states and 1428 transitions. Second operand 5 states. [2020-09-17 00:03:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:36,821 INFO L93 Difference]: Finished difference Result 678 states and 2040 transitions. [2020-09-17 00:03:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:36,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-17 00:03:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:36,840 INFO L225 Difference]: With dead ends: 678 [2020-09-17 00:03:36,841 INFO L226 Difference]: Without dead ends: 342 [2020-09-17 00:03:36,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:03:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-17 00:03:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-09-17 00:03:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-09-17 00:03:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1003 transitions. [2020-09-17 00:03:36,859 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1003 transitions. Word has length 15 [2020-09-17 00:03:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:36,860 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 1003 transitions. [2020-09-17 00:03:36,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:03:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1003 transitions. [2020-09-17 00:03:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:03:36,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:36,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:36,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 00:03:36,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:36,863 INFO L82 PathProgramCache]: Analyzing trace with hash 733648448, now seen corresponding path program 2 times [2020-09-17 00:03:36,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:36,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203769794] [2020-09-17 00:03:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:36,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203769794] [2020-09-17 00:03:36,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:36,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:03:36,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80234216] [2020-09-17 00:03:36,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:03:36,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:36,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:03:36,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:03:36,941 INFO L87 Difference]: Start difference. First operand 342 states and 1003 transitions. Second operand 4 states. [2020-09-17 00:03:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:36,982 INFO L93 Difference]: Finished difference Result 458 states and 1279 transitions. [2020-09-17 00:03:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:36,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-17 00:03:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:36,985 INFO L225 Difference]: With dead ends: 458 [2020-09-17 00:03:36,985 INFO L226 Difference]: Without dead ends: 302 [2020-09-17 00:03:36,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:03:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-17 00:03:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 254. [2020-09-17 00:03:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-17 00:03:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-09-17 00:03:36,997 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-09-17 00:03:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:36,997 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-09-17 00:03:36,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:03:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-09-17 00:03:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:03:36,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:36,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:36,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 00:03:36,999 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:36,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:36,999 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 1 times [2020-09-17 00:03:37,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:37,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651443050] [2020-09-17 00:03:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:37,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651443050] [2020-09-17 00:03:37,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:37,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:03:37,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559703496] [2020-09-17 00:03:37,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:03:37,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:37,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:03:37,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:03:37,100 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 4 states. [2020-09-17 00:03:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:37,142 INFO L93 Difference]: Finished difference Result 302 states and 756 transitions. [2020-09-17 00:03:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:03:37,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-17 00:03:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:37,145 INFO L225 Difference]: With dead ends: 302 [2020-09-17 00:03:37,145 INFO L226 Difference]: Without dead ends: 229 [2020-09-17 00:03:37,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:03:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-17 00:03:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-09-17 00:03:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-17 00:03:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 581 transitions. [2020-09-17 00:03:37,154 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 581 transitions. Word has length 15 [2020-09-17 00:03:37,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:37,154 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 581 transitions. [2020-09-17 00:03:37,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:03:37,154 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 581 transitions. [2020-09-17 00:03:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-17 00:03:37,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:37,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:37,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 00:03:37,156 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:37,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-09-17 00:03:37,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:37,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487959901] [2020-09-17 00:03:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:37,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487959901] [2020-09-17 00:03:37,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:37,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:03:37,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188845455] [2020-09-17 00:03:37,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:03:37,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:37,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:03:37,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:03:37,238 INFO L87 Difference]: Start difference. First operand 229 states and 581 transitions. Second operand 5 states. [2020-09-17 00:03:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:37,294 INFO L93 Difference]: Finished difference Result 227 states and 514 transitions. [2020-09-17 00:03:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:03:37,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-17 00:03:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:37,297 INFO L225 Difference]: With dead ends: 227 [2020-09-17 00:03:37,297 INFO L226 Difference]: Without dead ends: 171 [2020-09-17 00:03:37,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:03:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-17 00:03:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-17 00:03:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-17 00:03:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-09-17 00:03:37,305 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 16 [2020-09-17 00:03:37,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:37,306 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-09-17 00:03:37,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:03:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-09-17 00:03:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-17 00:03:37,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:37,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:37,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-17 00:03:37,307 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:37,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-17 00:03:37,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:37,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550913163] [2020-09-17 00:03:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:37,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550913163] [2020-09-17 00:03:37,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:37,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 00:03:37,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476097963] [2020-09-17 00:03:37,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:03:37,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:37,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:03:37,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:03:37,410 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-09-17 00:03:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:37,483 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-09-17 00:03:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:03:37,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-17 00:03:37,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:37,485 INFO L225 Difference]: With dead ends: 147 [2020-09-17 00:03:37,485 INFO L226 Difference]: Without dead ends: 107 [2020-09-17 00:03:37,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:03:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-17 00:03:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-17 00:03:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-17 00:03:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-09-17 00:03:37,490 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-09-17 00:03:37,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:37,490 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-09-17 00:03:37,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:03:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-09-17 00:03:37,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 00:03:37,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:37,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:37,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-17 00:03:37,491 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:37,492 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-17 00:03:37,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:37,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355935564] [2020-09-17 00:03:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:37,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355935564] [2020-09-17 00:03:37,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:37,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:03:37,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541687165] [2020-09-17 00:03:37,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:03:37,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:37,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:03:37,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:03:37,581 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-09-17 00:03:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:37,618 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-09-17 00:03:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:03:37,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-17 00:03:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:37,620 INFO L225 Difference]: With dead ends: 121 [2020-09-17 00:03:37,620 INFO L226 Difference]: Without dead ends: 105 [2020-09-17 00:03:37,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:03:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-17 00:03:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-17 00:03:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-17 00:03:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-09-17 00:03:37,624 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-09-17 00:03:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:37,625 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-09-17 00:03:37,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:03:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-09-17 00:03:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 00:03:37,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:03:37,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:03:37,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-17 00:03:37,626 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:03:37,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:03:37,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-17 00:03:37,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:03:37,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662492388] [2020-09-17 00:03:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:03:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:03:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 00:03:37,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662492388] [2020-09-17 00:03:37,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:03:37,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-17 00:03:37,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113321395] [2020-09-17 00:03:37,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-17 00:03:37,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:03:37,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-17 00:03:37,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:03:37,755 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 7 states. [2020-09-17 00:03:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:03:37,811 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-09-17 00:03:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:03:37,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-17 00:03:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:03:37,811 INFO L225 Difference]: With dead ends: 93 [2020-09-17 00:03:37,812 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 00:03:37,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-17 00:03:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 00:03:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 00:03:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 00:03:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 00:03:37,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-17 00:03:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:03:37,813 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 00:03:37,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-17 00:03:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 00:03:37,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 00:03:37,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-17 00:03:37,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 12:03:37 BasicIcfg [2020-09-17 00:03:37,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 00:03:37,824 INFO L168 Benchmark]: Toolchain (without parser) took 6404.70 ms. Allocated memory was 139.5 MB in the beginning and 294.1 MB in the end (delta: 154.7 MB). Free memory was 100.8 MB in the beginning and 138.2 MB in the end (delta: -37.4 MB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. [2020-09-17 00:03:37,825 INFO L168 Benchmark]: CDTParser took 1.48 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-17 00:03:37,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 848.72 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 159.8 MB in the end (delta: -59.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-17 00:03:37,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.19 ms. Allocated memory is still 202.9 MB. Free memory was 159.8 MB in the beginning and 157.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:03:37,838 INFO L168 Benchmark]: Boogie Preprocessor took 33.47 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:03:37,840 INFO L168 Benchmark]: RCFGBuilder took 488.20 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 132.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-17 00:03:37,841 INFO L168 Benchmark]: TraceAbstraction took 4960.47 ms. Allocated memory was 202.9 MB in the beginning and 294.1 MB in the end (delta: 91.2 MB). Free memory was 131.3 MB in the beginning and 138.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. [2020-09-17 00:03:37,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.48 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 848.72 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.4 MB in the beginning and 159.8 MB in the end (delta: -59.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.19 ms. Allocated memory is still 202.9 MB. Free memory was 159.8 MB in the beginning and 157.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.47 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.20 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 132.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4960.47 ms. Allocated memory was 202.9 MB in the beginning and 294.1 MB in the end (delta: 91.2 MB). Free memory was 131.3 MB in the beginning and 138.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 371 SDtfs, 335 SDslu, 597 SDs, 0 SdLazy, 227 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 7946 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...