/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:26:48,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:26:48,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:26:48,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:26:48,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:26:48,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:26:48,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:26:48,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:26:48,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:26:48,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:26:48,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:26:48,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:26:48,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:26:48,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:26:48,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:26:48,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:26:48,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:26:48,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:26:48,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:26:48,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:26:48,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:26:48,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:26:48,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:26:48,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:26:48,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:26:48,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:26:48,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:26:48,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:26:48,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:26:48,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:26:48,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:26:48,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:26:48,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:26:48,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:26:48,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:26:48,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:26:48,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:26:48,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:26:48,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:26:48,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:26:48,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:26:48,492 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 [2020-10-13 09:26:48,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:26:48,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:26:48,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:26:48,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:26:48,516 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:26:48,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:26:48,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:26:48,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:26:48,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:26:48,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:26:48,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:26:48,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:26:48,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:26:48,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:26:48,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:26:48,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:26:48,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:26:48,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:26:48,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:26:48,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:26:48,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:26:48,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:26:48,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:26:48,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:26:48,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:26:48,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:26:48,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:26:48,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:26:48,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:26:48,524 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:26:48,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:26:48,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:26:48,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:26:48,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:26:48,833 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:26:48,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05.c [2020-10-13 09:26:48,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aef08233/ede5dfffd6a24411b578a3c56f918637/FLAGef0654d26 [2020-10-13 09:26:49,626 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:26:49,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label05.c [2020-10-13 09:26:49,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aef08233/ede5dfffd6a24411b578a3c56f918637/FLAGef0654d26 [2020-10-13 09:26:49,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9aef08233/ede5dfffd6a24411b578a3c56f918637 [2020-10-13 09:26:49,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:26:49,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:26:49,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:26:49,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:26:49,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:26:49,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:26:49" (1/1) ... [2020-10-13 09:26:49,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc9c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:49, skipping insertion in model container [2020-10-13 09:26:49,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:26:49" (1/1) ... [2020-10-13 09:26:49,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:26:49,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:26:51,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:26:51,073 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:26:51,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:26:51,568 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:26:51,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51 WrapperNode [2020-10-13 09:26:51,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:26:51,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:26:51,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:26:51,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:26:51,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (1/1) ... [2020-10-13 09:26:51,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (1/1) ... [2020-10-13 09:26:51,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (1/1) ... [2020-10-13 09:26:51,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (1/1) ... [2020-10-13 09:26:51,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (1/1) ... [2020-10-13 09:26:51,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (1/1) ... [2020-10-13 09:26:51,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (1/1) ... [2020-10-13 09:26:51,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:26:51,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:26:51,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:26:51,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:26:51,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (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 [2020-10-13 09:26:51,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:26:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:26:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:26:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:26:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:26:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:26:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:26:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:26:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:26:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:26:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:26:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:26:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:26:58,718 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:26:58,718 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:26:58,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:26:58 BoogieIcfgContainer [2020-10-13 09:26:58,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:26:58,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:26:58,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:26:58,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:26:58,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:26:49" (1/3) ... [2020-10-13 09:26:58,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af708e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:26:58, skipping insertion in model container [2020-10-13 09:26:58,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:51" (2/3) ... [2020-10-13 09:26:58,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af708e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:26:58, skipping insertion in model container [2020-10-13 09:26:58,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:26:58" (3/3) ... [2020-10-13 09:26:58,749 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label05.c [2020-10-13 09:26:58,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:26:58,778 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:26:58,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:26:58,821 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:26:58,821 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:26:58,822 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:26:58,822 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:26:58,822 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:26:58,822 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:26:58,822 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:26:58,822 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:26:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:26:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 09:26:58,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:58,868 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] [2020-10-13 09:26:58,869 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1186174567, now seen corresponding path program 1 times [2020-10-13 09:26:58,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:58,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435744828] [2020-10-13 09:26:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:59,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:59,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:26:59,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:59,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-13 09:26:59,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:59,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:26:59,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:26:59,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:26:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:26:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:59,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:26:59,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:26:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:26:59,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435744828] [2020-10-13 09:26:59,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:26:59,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:26:59,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258707109] [2020-10-13 09:26:59,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:26:59,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:59,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:26:59,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:26:59,895 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:27:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:10,050 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-13 09:27:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:10,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-13 09:27:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:10,080 INFO L225 Difference]: With dead ends: 1692 [2020-10-13 09:27:10,080 INFO L226 Difference]: Without dead ends: 1012 [2020-10-13 09:27:10,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-13 09:27:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-13 09:27:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:27:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-13 09:27:10,213 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 67 [2020-10-13 09:27:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:10,214 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-13 09:27:10,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:27:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-13 09:27:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 09:27:10,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:10,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:27:10,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:27:10,223 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:10,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:10,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1939939023, now seen corresponding path program 1 times [2020-10-13 09:27:10,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:10,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778653560] [2020-10-13 09:27:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:10,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:11,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:12,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:12,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 09:27:12,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:27:12,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2496 [2020-10-13 09:27:12,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:27:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:27:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:27:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:27:13,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:13,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:13,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:13,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:13,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:27:13,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:13,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:13,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:13,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:27:13,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:27:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:27:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:27:13,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778653560] [2020-10-13 09:27:13,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:13,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:27:13,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800411570] [2020-10-13 09:27:13,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:27:13,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:13,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:27:13,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:27:13,467 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 8 states. [2020-10-13 09:27:15,038 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-13 09:27:27,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:27,914 INFO L93 Difference]: Finished difference Result 2156 states and 3257 transitions. [2020-10-13 09:27:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:27:27,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-10-13 09:27:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:27,926 INFO L225 Difference]: With dead ends: 2156 [2020-10-13 09:27:27,927 INFO L226 Difference]: Without dead ends: 1006 [2020-10-13 09:27:27,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:27:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-13 09:27:27,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2020-10-13 09:27:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:27:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1462 transitions. [2020-10-13 09:27:27,978 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1462 transitions. Word has length 138 [2020-10-13 09:27:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:27,978 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1462 transitions. [2020-10-13 09:27:27,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:27:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1462 transitions. [2020-10-13 09:27:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 09:27:27,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:27,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:27:27,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:27:27,985 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:27,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:27,986 INFO L82 PathProgramCache]: Analyzing trace with hash -874447903, now seen corresponding path program 1 times [2020-10-13 09:27:27,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:27,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402474304] [2020-10-13 09:27:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:32,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:27:32,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:27:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4090 [2020-10-13 09:27:32,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:27:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:27:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:27:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:33,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:33,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:33,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:27:33,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:33,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:33,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:33,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:27:33,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:33,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:27:33,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:27:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:27:33,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402474304] [2020-10-13 09:27:33,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:33,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 09:27:33,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612859325] [2020-10-13 09:27:33,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 09:27:33,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:33,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 09:27:33,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-13 09:27:33,977 INFO L87 Difference]: Start difference. First operand 1002 states and 1462 transitions. Second operand 20 states. [2020-10-13 09:27:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:50,032 INFO L93 Difference]: Finished difference Result 2335 states and 3301 transitions. [2020-10-13 09:27:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 09:27:50,040 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 141 [2020-10-13 09:27:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:50,047 INFO L225 Difference]: With dead ends: 2335 [2020-10-13 09:27:50,047 INFO L226 Difference]: Without dead ends: 1006 [2020-10-13 09:27:50,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 09:27:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-13 09:27:50,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2020-10-13 09:27:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:27:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1412 transitions. [2020-10-13 09:27:50,090 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1412 transitions. Word has length 141 [2020-10-13 09:27:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:50,091 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1412 transitions. [2020-10-13 09:27:50,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 09:27:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1412 transitions. [2020-10-13 09:27:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 09:27:50,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:50,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:27:50,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:27:50,100 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:50,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:50,101 INFO L82 PathProgramCache]: Analyzing trace with hash -178148699, now seen corresponding path program 1 times [2020-10-13 09:27:50,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:50,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401801776] [2020-10-13 09:27:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:51,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 09:27:51,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:27:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1833 [2020-10-13 09:27:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 09:27:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:27:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:27:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:52,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:52,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:52,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:27:52,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:52,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:52,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:52,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:27:52,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:27:52,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:27:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:27:53,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401801776] [2020-10-13 09:27:53,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:53,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 09:27:53,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901908057] [2020-10-13 09:27:53,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 09:27:53,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:53,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 09:27:53,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:27:53,028 INFO L87 Difference]: Start difference. First operand 1002 states and 1412 transitions. Second operand 11 states. [2020-10-13 09:27:54,394 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-13 09:27:54,570 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-13 09:27:55,044 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-13 09:27:55,236 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-10-13 09:27:55,455 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-13 09:28:09,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:09,177 INFO L93 Difference]: Finished difference Result 2060 states and 2888 transitions. [2020-10-13 09:28:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:28:09,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-10-13 09:28:09,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:09,184 INFO L225 Difference]: With dead ends: 2060 [2020-10-13 09:28:09,185 INFO L226 Difference]: Without dead ends: 1006 [2020-10-13 09:28:09,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2020-10-13 09:28:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-13 09:28:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2020-10-13 09:28:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:28:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1410 transitions. [2020-10-13 09:28:09,215 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1410 transitions. Word has length 143 [2020-10-13 09:28:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:09,215 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1410 transitions. [2020-10-13 09:28:09,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 09:28:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1410 transitions. [2020-10-13 09:28:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 09:28:09,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:09,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:28:09,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:28:09,218 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:09,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:09,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1149532705, now seen corresponding path program 1 times [2020-10-13 09:28:09,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:09,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824272119] [2020-10-13 09:28:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:09,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:10,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:10,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:28:10,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:28:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-10-13 09:28:10,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:28:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:28:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:28:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:10,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:10,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:28:10,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:28:10,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:28:10,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:28:10,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824272119] [2020-10-13 09:28:10,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:10,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:28:10,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289690070] [2020-10-13 09:28:10,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:28:10,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:10,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:28:10,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:28:10,926 INFO L87 Difference]: Start difference. First operand 1002 states and 1410 transitions. Second operand 5 states. [2020-10-13 09:28:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:22,376 INFO L93 Difference]: Finished difference Result 2049 states and 2873 transitions. [2020-10-13 09:28:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:28:22,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 09:28:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:22,386 INFO L225 Difference]: With dead ends: 2049 [2020-10-13 09:28:22,386 INFO L226 Difference]: Without dead ends: 1006 [2020-10-13 09:28:22,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:28:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-13 09:28:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2020-10-13 09:28:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:28:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1408 transitions. [2020-10-13 09:28:22,424 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1408 transitions. Word has length 146 [2020-10-13 09:28:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:22,425 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1408 transitions. [2020-10-13 09:28:22,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:28:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1408 transitions. [2020-10-13 09:28:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 09:28:22,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:22,430 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:28:22,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:28:22,430 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:22,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1919967121, now seen corresponding path program 1 times [2020-10-13 09:28:22,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:22,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824326845] [2020-10-13 09:28:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:22,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:28:22,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-13 09:28:22,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:28:22,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:28:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:22,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:22,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:22,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:28:22,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:23,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:23,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:28:23,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:23,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:28:23,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:28:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:28:23,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824326845] [2020-10-13 09:28:23,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:23,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:28:23,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251470009] [2020-10-13 09:28:23,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:28:23,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:23,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:28:23,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:28:23,090 INFO L87 Difference]: Start difference. First operand 1002 states and 1408 transitions. Second operand 5 states. [2020-10-13 09:28:38,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:38,880 INFO L93 Difference]: Finished difference Result 2896 states and 4091 transitions. [2020-10-13 09:28:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:28:38,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-13 09:28:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:38,892 INFO L225 Difference]: With dead ends: 2896 [2020-10-13 09:28:38,892 INFO L226 Difference]: Without dead ends: 1900 [2020-10-13 09:28:38,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:28:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-10-13 09:28:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1896. [2020-10-13 09:28:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-10-13 09:28:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2489 transitions. [2020-10-13 09:28:38,945 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2489 transitions. Word has length 154 [2020-10-13 09:28:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:38,946 INFO L479 AbstractCegarLoop]: Abstraction has 1896 states and 2489 transitions. [2020-10-13 09:28:38,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:28:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2489 transitions. [2020-10-13 09:28:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 09:28:38,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:38,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:28:38,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:28:38,950 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:38,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:38,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1947333032, now seen corresponding path program 1 times [2020-10-13 09:28:38,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:38,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940347485] [2020-10-13 09:28:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:39,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:39,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:39,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:28:39,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:28:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-13 09:28:39,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:28:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:28:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:39,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:39,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:39,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:39,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:28:39,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:28:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 09:28:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:28:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:28:40,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940347485] [2020-10-13 09:28:40,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:40,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:28:40,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825949364] [2020-10-13 09:28:40,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:28:40,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:40,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:28:40,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:28:40,203 INFO L87 Difference]: Start difference. First operand 1896 states and 2489 transitions. Second operand 5 states. [2020-10-13 09:28:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:48,418 INFO L93 Difference]: Finished difference Result 4679 states and 6318 transitions. [2020-10-13 09:28:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:28:48,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 09:28:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:48,433 INFO L225 Difference]: With dead ends: 4679 [2020-10-13 09:28:48,433 INFO L226 Difference]: Without dead ends: 2789 [2020-10-13 09:28:48,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:28:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2020-10-13 09:28:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2779. [2020-10-13 09:28:48,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2020-10-13 09:28:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3604 transitions. [2020-10-13 09:28:48,502 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3604 transitions. Word has length 157 [2020-10-13 09:28:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:48,503 INFO L479 AbstractCegarLoop]: Abstraction has 2779 states and 3604 transitions. [2020-10-13 09:28:48,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:28:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3604 transitions. [2020-10-13 09:28:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 09:28:48,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:48,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:28:48,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:28:48,506 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash 972906550, now seen corresponding path program 1 times [2020-10-13 09:28:48,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:48,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217340178] [2020-10-13 09:28:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:51,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:51,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 09:28:51,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:28:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2601 [2020-10-13 09:28:51,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 09:28:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:28:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:28:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:51,532 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-10-13 09:28:51,773 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-13 09:28:51,981 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-10-13 09:28:52,184 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2020-10-13 09:28:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:52,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:52,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:52,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:28:52,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:52,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:52,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:52,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:52,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:52,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:28:52,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 09:28:52,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:28:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:28:52,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217340178] [2020-10-13 09:28:52,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:52,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 09:28:52,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130633184] [2020-10-13 09:28:52,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 09:28:52,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:52,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 09:28:52,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:28:52,932 INFO L87 Difference]: Start difference. First operand 2779 states and 3604 transitions. Second operand 11 states. [2020-10-13 09:28:54,913 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-13 09:28:55,151 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-13 09:28:55,756 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-13 09:28:56,013 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-13 09:28:56,287 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-13 09:28:56,448 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-13 09:29:09,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:09,946 INFO L93 Difference]: Finished difference Result 5614 states and 7285 transitions. [2020-10-13 09:29:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:29:09,948 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-10-13 09:29:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:09,960 INFO L225 Difference]: With dead ends: 5614 [2020-10-13 09:29:09,960 INFO L226 Difference]: Without dead ends: 2783 [2020-10-13 09:29:09,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2020-10-13 09:29:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2020-10-13 09:29:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2779. [2020-10-13 09:29:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2020-10-13 09:29:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3598 transitions. [2020-10-13 09:29:10,027 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3598 transitions. Word has length 170 [2020-10-13 09:29:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:10,028 INFO L479 AbstractCegarLoop]: Abstraction has 2779 states and 3598 transitions. [2020-10-13 09:29:10,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 09:29:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3598 transitions. [2020-10-13 09:29:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 09:29:10,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:10,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:29:10,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:29:10,032 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:10,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:10,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1101828980, now seen corresponding path program 1 times [2020-10-13 09:29:10,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:10,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220236847] [2020-10-13 09:29:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:11,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:11,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:29:11,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:29:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-10-13 09:29:11,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 09:29:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:29:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:11,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:11,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:11,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:11,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:29:11,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:11,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:11,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:11,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:29:11,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:11,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-13 09:29:11,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:11,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:29:11,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:11,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220236847] [2020-10-13 09:29:11,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:11,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:29:11,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827469002] [2020-10-13 09:29:11,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:29:11,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:11,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:29:11,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:29:11,623 INFO L87 Difference]: Start difference. First operand 2779 states and 3598 transitions. Second operand 5 states. [2020-10-13 09:29:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:26,025 INFO L93 Difference]: Finished difference Result 6872 states and 9121 transitions. [2020-10-13 09:29:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:29:26,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-13 09:29:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:26,046 INFO L225 Difference]: With dead ends: 6872 [2020-10-13 09:29:26,046 INFO L226 Difference]: Without dead ends: 4099 [2020-10-13 09:29:26,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:29:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2020-10-13 09:29:26,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 4095. [2020-10-13 09:29:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4095 states. [2020-10-13 09:29:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 5225 transitions. [2020-10-13 09:29:26,162 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 5225 transitions. Word has length 210 [2020-10-13 09:29:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:26,162 INFO L479 AbstractCegarLoop]: Abstraction has 4095 states and 5225 transitions. [2020-10-13 09:29:26,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:29:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 5225 transitions. [2020-10-13 09:29:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 09:29:26,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:26,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:29:26,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:29:26,168 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:26,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:26,169 INFO L82 PathProgramCache]: Analyzing trace with hash 603254608, now seen corresponding path program 1 times [2020-10-13 09:29:26,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:26,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357231375] [2020-10-13 09:29:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:27,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:29,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:29,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 09:29:29,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:29:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3281 [2020-10-13 09:29:29,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:29:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 09:29:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:29:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:29,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:29,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:29,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:29,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:29:29,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:29,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:29,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:29:29,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-13 09:29:29,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:29:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:29:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:30,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357231375] [2020-10-13 09:29:30,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:30,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:29:30,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972617174] [2020-10-13 09:29:30,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:29:30,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:30,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:29:30,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:29:30,272 INFO L87 Difference]: Start difference. First operand 4095 states and 5225 transitions. Second operand 6 states. [2020-10-13 09:29:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:56,343 INFO L93 Difference]: Finished difference Result 12226 states and 15991 transitions. [2020-10-13 09:29:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:29:56,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2020-10-13 09:29:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:56,384 INFO L225 Difference]: With dead ends: 12226 [2020-10-13 09:29:56,384 INFO L226 Difference]: Without dead ends: 8081 [2020-10-13 09:29:56,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:29:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8081 states. [2020-10-13 09:29:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8081 to 8072. [2020-10-13 09:29:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8072 states. [2020-10-13 09:29:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 10305 transitions. [2020-10-13 09:29:56,644 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 10305 transitions. Word has length 211 [2020-10-13 09:29:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:56,644 INFO L479 AbstractCegarLoop]: Abstraction has 8072 states and 10305 transitions. [2020-10-13 09:29:56,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:29:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 10305 transitions. [2020-10-13 09:29:56,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 09:29:56,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:56,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:29:56,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:29:56,652 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:56,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1107399918, now seen corresponding path program 1 times [2020-10-13 09:29:56,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:56,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882918780] [2020-10-13 09:29:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:58,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:58,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 09:29:58,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:29:58,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1535 [2020-10-13 09:29:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 09:29:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:29:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:58,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:29:58,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:58,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:58,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:29:58,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:58,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 09:29:58,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 09:29:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:58,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882918780] [2020-10-13 09:29:58,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:58,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:29:58,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830190495] [2020-10-13 09:29:58,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:29:58,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:58,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:29:58,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:29:58,880 INFO L87 Difference]: Start difference. First operand 8072 states and 10305 transitions. Second operand 5 states. [2020-10-13 09:30:11,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:11,521 INFO L93 Difference]: Finished difference Result 16164 states and 20680 transitions. [2020-10-13 09:30:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:11,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-13 09:30:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:11,554 INFO L225 Difference]: With dead ends: 16164 [2020-10-13 09:30:11,554 INFO L226 Difference]: Without dead ends: 8076 [2020-10-13 09:30:11,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:30:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2020-10-13 09:30:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8072. [2020-10-13 09:30:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8072 states. [2020-10-13 09:30:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 10293 transitions. [2020-10-13 09:30:11,729 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 10293 transitions. Word has length 221 [2020-10-13 09:30:11,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:11,730 INFO L479 AbstractCegarLoop]: Abstraction has 8072 states and 10293 transitions. [2020-10-13 09:30:11,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:11,730 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 10293 transitions. [2020-10-13 09:30:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 09:30:11,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:11,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-13 09:30:11,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:30:11,738 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:11,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1572599359, now seen corresponding path program 1 times [2020-10-13 09:30:11,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:11,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848497587] [2020-10-13 09:30:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:15,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 09:30:15,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:30:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3371 [2020-10-13 09:30:15,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:30:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:30:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:15,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:15,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:15,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:15,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:30:15,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:15,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:15,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:30:15,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:30:15,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:30:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:15,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:15,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:30:15,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:30:15,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:30:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:30:15,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848497587] [2020-10-13 09:30:15,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:15,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:15,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818620279] [2020-10-13 09:30:15,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:15,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:15,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:15,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:15,746 INFO L87 Difference]: Start difference. First operand 8072 states and 10293 transitions. Second operand 5 states. [2020-10-13 09:30:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:27,901 INFO L93 Difference]: Finished difference Result 16158 states and 20640 transitions. [2020-10-13 09:30:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:27,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-13 09:30:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:27,931 INFO L225 Difference]: With dead ends: 16158 [2020-10-13 09:30:27,932 INFO L226 Difference]: Without dead ends: 8076 [2020-10-13 09:30:27,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:30:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2020-10-13 09:30:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8072. [2020-10-13 09:30:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8072 states. [2020-10-13 09:30:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 10289 transitions. [2020-10-13 09:30:28,097 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 10289 transitions. Word has length 229 [2020-10-13 09:30:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:28,098 INFO L479 AbstractCegarLoop]: Abstraction has 8072 states and 10289 transitions. [2020-10-13 09:30:28,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 10289 transitions. [2020-10-13 09:30:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-13 09:30:28,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:28,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:30:28,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:30:28,112 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:28,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:28,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1502728120, now seen corresponding path program 1 times [2020-10-13 09:30:28,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:28,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292817749] [2020-10-13 09:30:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:29,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:29,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-13 09:30:29,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:30:29,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-10-13 09:30:29,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-13 09:30:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:30:29,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:29,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:29,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:29,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:29,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:30:29,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:30,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:30,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:30,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:30,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:30:30,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:30:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:30,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:30:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:30,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:30,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:30:30,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:30:30,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 09:30:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:30:30,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292817749] [2020-10-13 09:30:30,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:30,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:30,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257666681] [2020-10-13 09:30:30,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:30,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:30,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:30,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:30,266 INFO L87 Difference]: Start difference. First operand 8072 states and 10289 transitions. Second operand 5 states. [2020-10-13 09:30:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:39,983 INFO L93 Difference]: Finished difference Result 16164 states and 20637 transitions. [2020-10-13 09:30:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:39,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-10-13 09:30:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:40,020 INFO L225 Difference]: With dead ends: 16164 [2020-10-13 09:30:40,021 INFO L226 Difference]: Without dead ends: 8076 [2020-10-13 09:30:40,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:30:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2020-10-13 09:30:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8072. [2020-10-13 09:30:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8072 states. [2020-10-13 09:30:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 10287 transitions. [2020-10-13 09:30:40,207 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 10287 transitions. Word has length 274 [2020-10-13 09:30:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:40,207 INFO L479 AbstractCegarLoop]: Abstraction has 8072 states and 10287 transitions. [2020-10-13 09:30:40,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 10287 transitions. [2020-10-13 09:30:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-13 09:30:40,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:40,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:30:40,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:30:40,221 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:40,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:40,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1132665960, now seen corresponding path program 1 times [2020-10-13 09:30:40,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:40,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108208966] [2020-10-13 09:30:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking...