/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:39:46,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:39:46,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:39:46,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:39:46,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:39:46,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:39:46,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:39:46,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:39:46,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:39:46,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:39:46,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:39:46,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:39:46,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:39:46,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:39:46,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:39:46,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:39:46,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:39:46,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:39:46,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:39:46,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:39:46,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:39:46,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:39:46,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:39:46,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:39:46,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:39:46,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:39:46,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:39:46,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:39:46,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:39:46,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:39:46,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:39:46,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:39:46,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:39:46,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:39:46,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:39:46,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:39:46,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:39:46,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:39:46,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:39:46,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:39:46,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:39:46,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:39:46,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:39:46,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:39:46,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:39:46,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:39:46,901 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:39:46,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:39:46,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:39:46,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:39:46,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:39:46,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:39:46,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:39:46,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:39:46,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:39:46,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:39:46,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:39:46,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:39:46,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:39:46,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:39:46,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:39:46,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:39:46,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:39:46,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:46,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:39:46,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:39:46,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:39:46,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:39:46,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:39:46,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:39:46,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:39:46,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:39:47,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:39:47,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:39:47,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:39:47,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:39:47,434 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:39:47,435 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-24 21:39:47,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c09e035/99284527297641f4b14aea123aaf9176/FLAGe6baa2438 [2020-09-24 21:39:48,236 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:39:48,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-24 21:39:48,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c09e035/99284527297641f4b14aea123aaf9176/FLAGe6baa2438 [2020-09-24 21:39:48,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c09e035/99284527297641f4b14aea123aaf9176 [2020-09-24 21:39:48,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:39:48,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:39:48,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:48,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:39:48,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:39:48,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:48" (1/1) ... [2020-09-24 21:39:48,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:48, skipping insertion in model container [2020-09-24 21:39:48,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:48" (1/1) ... [2020-09-24 21:39:48,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:39:48,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:39:48,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:48,968 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:39:49,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:49,219 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:39:49,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49 WrapperNode [2020-09-24 21:39:49,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:49,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:39:49,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:39:49,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:39:49,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... [2020-09-24 21:39:49,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:39:49,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:39:49,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:39:49,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:39:49,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 21:39:49,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:39:49,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:39:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:39:49,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:39:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:39:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:39:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:39:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:39:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:39:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:39:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:39:50,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:39:50,853 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:39:50,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:50 BoogieIcfgContainer [2020-09-24 21:39:50,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:39:50,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:39:50,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:39:50,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:39:50,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:39:48" (1/3) ... [2020-09-24 21:39:50,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:39:50, skipping insertion in model container [2020-09-24 21:39:50,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:49" (2/3) ... [2020-09-24 21:39:50,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:39:50, skipping insertion in model container [2020-09-24 21:39:50,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:50" (3/3) ... [2020-09-24 21:39:50,874 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-24 21:39:50,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:39:50,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:39:50,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:39:50,963 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:39:50,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:39:50,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:39:50,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:39:50,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:39:50,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:39:50,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:39:50,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:39:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:39:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-24 21:39:51,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:51,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:39:51,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:51,055 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-24 21:39:51,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:51,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-24 21:39:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:56,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:56,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 21:39:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:39:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:39:56,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:39:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:56,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:39:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:39:57,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:57,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 21:39:57,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:58,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-24 21:39:58,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:39:58,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:39:58,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646726766] [2020-09-24 21:39:58,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:39:58,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:58,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:39:58,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:39:58,417 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:39:59,173 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-24 21:39:59,418 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-24 21:39:59,674 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-24 21:40:00,241 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2020-09-24 21:40:01,188 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2020-09-24 21:40:01,825 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2020-09-24 21:40:02,756 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 21:40:03,412 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 21:40:04,535 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-09-24 21:40:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:07,549 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:40:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 21:40:07,551 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 110 [2020-09-24 21:40:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:07,580 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:40:07,581 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:40:07,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:40:07,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:40:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:40:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:40:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1147 transitions. [2020-09-24 21:40:07,739 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1147 transitions. Word has length 110 [2020-09-24 21:40:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:07,741 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1147 transitions. [2020-09-24 21:40:07,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:40:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1147 transitions. [2020-09-24 21:40:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 21:40:07,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:07,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:07,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:40:07,770 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash -397343566, now seen corresponding path program 1 times [2020-09-24 21:40:07,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:07,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828907233] [2020-09-24 21:40:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:11,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:12,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:12,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 21:40:12,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:40:12,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-24 21:40:12,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:40:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:40:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:40:12,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:13,599 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-09-24 21:40:13,760 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-09-24 21:40:13,902 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-09-24 21:40:14,041 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-09-24 21:40:14,190 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-09-24 21:40:14,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:14,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:14,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:14,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:14,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:40:14,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:40:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:14,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:14,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:40:14,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:14,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 21:40:14,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:40:14,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:14,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:40:14,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:40:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:40:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:14,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:14,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:14,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 21:40:14,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:40:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:14,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:40:15,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828907233] [2020-09-24 21:40:15,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:15,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:40:15,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848780565] [2020-09-24 21:40:15,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:40:15,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:15,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:40:15,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:40:15,184 INFO L87 Difference]: Start difference. First operand 985 states and 1147 transitions. Second operand 23 states. [2020-09-24 21:40:16,085 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-09-24 21:40:16,856 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-09-24 21:40:18,040 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-09-24 21:40:20,203 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-09-24 21:40:20,584 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-09-24 21:40:21,388 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-09-24 21:40:22,439 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-09-24 21:40:23,147 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2020-09-24 21:40:23,623 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-09-24 21:40:24,588 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2020-09-24 21:40:26,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:26,295 INFO L93 Difference]: Finished difference Result 3511 states and 4495 transitions. [2020-09-24 21:40:26,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-24 21:40:26,296 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2020-09-24 21:40:26,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:26,319 INFO L225 Difference]: With dead ends: 3511 [2020-09-24 21:40:26,320 INFO L226 Difference]: Without dead ends: 2614 [2020-09-24 21:40:26,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=711, Invalid=1941, Unknown=0, NotChecked=0, Total=2652 [2020-09-24 21:40:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2020-09-24 21:40:26,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2185. [2020-09-24 21:40:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-09-24 21:40:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 2649 transitions. [2020-09-24 21:40:26,462 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 2649 transitions. Word has length 148 [2020-09-24 21:40:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:26,464 INFO L479 AbstractCegarLoop]: Abstraction has 2185 states and 2649 transitions. [2020-09-24 21:40:26,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:40:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 2649 transitions. [2020-09-24 21:40:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 21:40:26,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:26,476 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:26,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:40:26,477 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:26,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1765072832, now seen corresponding path program 1 times [2020-09-24 21:40:26,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:26,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900435181] [2020-09-24 21:40:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:26,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:31,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 21:40:31,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:40:31,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:40:31,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:40:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:40:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:40:31,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:31,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:31,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:40:31,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:31,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:40:31,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:31,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:31,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:31,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 21:40:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 21:40:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:31,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:31,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:31,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 21:40:31,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:31,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:31,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:31,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:40:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:40:31,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900435181] [2020-09-24 21:40:31,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:31,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:40:31,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376297018] [2020-09-24 21:40:31,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:40:31,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:31,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:40:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:40:31,931 INFO L87 Difference]: Start difference. First operand 2185 states and 2649 transitions. Second operand 8 states. [2020-09-24 21:40:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:34,327 INFO L93 Difference]: Finished difference Result 5527 states and 7073 transitions. [2020-09-24 21:40:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:40:34,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-24 21:40:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:34,352 INFO L225 Difference]: With dead ends: 5527 [2020-09-24 21:40:34,352 INFO L226 Difference]: Without dead ends: 3430 [2020-09-24 21:40:34,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:40:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2020-09-24 21:40:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3314. [2020-09-24 21:40:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3314 states. [2020-09-24 21:40:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 4086 transitions. [2020-09-24 21:40:34,493 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 4086 transitions. Word has length 152 [2020-09-24 21:40:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:34,495 INFO L479 AbstractCegarLoop]: Abstraction has 3314 states and 4086 transitions. [2020-09-24 21:40:34,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:40:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 4086 transitions. [2020-09-24 21:40:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 21:40:34,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:34,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:34,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:40:34,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:34,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:34,509 INFO L82 PathProgramCache]: Analyzing trace with hash 136164004, now seen corresponding path program 1 times [2020-09-24 21:40:34,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:34,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385056609] [2020-09-24 21:40:34,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:34,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking...