/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:38:15,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:38:15,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:38:15,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:38:15,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:38:15,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:38:15,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:38:15,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:38:15,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:38:15,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:38:15,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:38:15,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:38:15,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:38:15,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:38:15,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:38:15,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:38:15,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:38:15,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:38:15,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:38:15,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:38:15,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:38:15,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:38:15,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:38:15,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:38:15,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:38:15,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:38:15,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:38:15,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:38:15,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:38:15,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:38:15,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:38:15,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:38:15,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:38:15,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:38:15,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:38:15,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:38:15,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:38:15,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:38:15,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:38:15,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:38:15,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:38:15,830 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 09:38:15,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:38:15,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:38:15,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:38:15,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:38:15,857 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:38:15,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:38:15,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:38:15,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:38:15,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:38:15,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:38:15,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:38:15,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:38:15,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:38:15,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:38:15,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:38:15,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:38:15,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:38:15,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:38:15,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:38:15,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:38:15,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:38:15,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:38:15,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:38:15,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:38:15,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:38:15,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:38:15,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:38:15,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:38:15,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:38:15,862 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 09:38:16,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:38:16,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:38:16,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:38:16,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:38:16,226 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:38:16,227 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45.c [2020-10-13 09:38:16,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e48a7445/a3a96538bf2d4512b35f01ba1f626ac5/FLAG2766f3912 [2020-10-13 09:38:17,107 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:38:17,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label45.c [2020-10-13 09:38:17,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e48a7445/a3a96538bf2d4512b35f01ba1f626ac5/FLAG2766f3912 [2020-10-13 09:38:17,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e48a7445/a3a96538bf2d4512b35f01ba1f626ac5 [2020-10-13 09:38:17,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:38:17,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:38:17,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:38:17,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:38:17,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:38:17,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:17" (1/1) ... [2020-10-13 09:38:17,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7decd891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:17, skipping insertion in model container [2020-10-13 09:38:17,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:17" (1/1) ... [2020-10-13 09:38:17,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:38:17,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:38:18,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:38:18,958 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:38:19,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:38:19,458 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:38:19,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19 WrapperNode [2020-10-13 09:38:19,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:38:19,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:38:19,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:38:19,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:38:19,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (1/1) ... [2020-10-13 09:38:19,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (1/1) ... [2020-10-13 09:38:19,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (1/1) ... [2020-10-13 09:38:19,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (1/1) ... [2020-10-13 09:38:19,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (1/1) ... [2020-10-13 09:38:19,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (1/1) ... [2020-10-13 09:38:19,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (1/1) ... [2020-10-13 09:38:19,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:38:19,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:38:19,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:38:19,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:38:19,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (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 09:38:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:38:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:38:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:38:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:38:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:38:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:38:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:38:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:38:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:38:19,911 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:38:19,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:38:19,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:38:19,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:38:27,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:38:27,411 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:38:27,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:27 BoogieIcfgContainer [2020-10-13 09:38:27,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:38:27,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:38:27,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:38:27,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:38:27,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:38:17" (1/3) ... [2020-10-13 09:38:27,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3099ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:27, skipping insertion in model container [2020-10-13 09:38:27,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:19" (2/3) ... [2020-10-13 09:38:27,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3099ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:27, skipping insertion in model container [2020-10-13 09:38:27,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:27" (3/3) ... [2020-10-13 09:38:27,437 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label45.c [2020-10-13 09:38:27,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:38:27,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:38:27,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:38:27,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:38:27,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:38:27,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:38:27,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:38:27,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:38:27,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:38:27,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:38:27,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:38:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:38:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 09:38:27,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:27,571 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] [2020-10-13 09:38:27,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:27,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:27,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1130045023, now seen corresponding path program 1 times [2020-10-13 09:38:27,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:27,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596421397] [2020-10-13 09:38:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:28,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:28,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 09:38:28,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:28,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-13 09:38:28,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:38:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:38:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:38:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:38:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:28,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:28,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:28,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:28,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:38:28,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:28,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:28,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:38:28,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:28,711 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 09:38:28,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596421397] [2020-10-13 09:38:28,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:38:28,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:38:28,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802406906] [2020-10-13 09:38:28,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:38:28,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:28,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:38:28,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:38:28,750 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:38:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:38:42,648 INFO L93 Difference]: Finished difference Result 1716 states and 3126 transitions. [2020-10-13 09:38:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:38:42,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-13 09:38:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:38:42,680 INFO L225 Difference]: With dead ends: 1716 [2020-10-13 09:38:42,680 INFO L226 Difference]: Without dead ends: 1034 [2020-10-13 09:38:42,693 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 09:38:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-10-13 09:38:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1008. [2020-10-13 09:38:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-13 09:38:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1705 transitions. [2020-10-13 09:38:42,874 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1705 transitions. Word has length 56 [2020-10-13 09:38:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:38:42,875 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1705 transitions. [2020-10-13 09:38:42,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:38:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1705 transitions. [2020-10-13 09:38:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 09:38:42,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:42,882 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, 1, 1, 1, 1, 1, 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 09:38:42,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:38:42,883 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:42,884 INFO L82 PathProgramCache]: Analyzing trace with hash 813473104, now seen corresponding path program 1 times [2020-10-13 09:38:42,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:42,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104490911] [2020-10-13 09:38:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:43,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:43,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:38:43,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:38:43,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-13 09:38:43,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:38:43,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:38:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:38:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:43,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:43,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:43,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:43,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:38:43,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:43,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:43,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:43,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:38:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:44,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:44,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:38:44,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:44,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:38:44,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:38:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:38:44,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104490911] [2020-10-13 09:38:44,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:38:44,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:38:44,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874711011] [2020-10-13 09:38:44,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:38:44,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:44,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:38:44,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:38:44,232 INFO L87 Difference]: Start difference. First operand 1008 states and 1705 transitions. Second operand 5 states. [2020-10-13 09:39:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:00,006 INFO L93 Difference]: Finished difference Result 2907 states and 4993 transitions. [2020-10-13 09:39:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:00,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 09:39:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:00,022 INFO L225 Difference]: With dead ends: 2907 [2020-10-13 09:39:00,022 INFO L226 Difference]: Without dead ends: 1905 [2020-10-13 09:39:00,026 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 09:39:00,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2020-10-13 09:39:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1890. [2020-10-13 09:39:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-10-13 09:39:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3226 transitions. [2020-10-13 09:39:00,096 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3226 transitions. Word has length 125 [2020-10-13 09:39:00,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:00,097 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 3226 transitions. [2020-10-13 09:39:00,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:39:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3226 transitions. [2020-10-13 09:39:00,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 09:39:00,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:00,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:00,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:39:00,102 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash 930532036, now seen corresponding path program 1 times [2020-10-13 09:39:00,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:00,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936694833] [2020-10-13 09:39:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:02,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 09:39:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:39:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2068 [2020-10-13 09:39:02,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:39:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:39:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:02,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:02,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:02,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:39:02,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:02,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:02,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:02,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:39:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 09:39:02,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:39:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:02,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936694833] [2020-10-13 09:39:02,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:02,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:02,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854386846] [2020-10-13 09:39:02,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:02,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:02,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:02,716 INFO L87 Difference]: Start difference. First operand 1890 states and 3226 transitions. Second operand 5 states. [2020-10-13 09:39:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:14,555 INFO L93 Difference]: Finished difference Result 3804 states and 6504 transitions. [2020-10-13 09:39:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:14,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 09:39:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:14,573 INFO L225 Difference]: With dead ends: 3804 [2020-10-13 09:39:14,574 INFO L226 Difference]: Without dead ends: 1904 [2020-10-13 09:39:14,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 09:39:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-13 09:39:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1890. [2020-10-13 09:39:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-10-13 09:39:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3222 transitions. [2020-10-13 09:39:14,645 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3222 transitions. Word has length 131 [2020-10-13 09:39:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:14,645 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 3222 transitions. [2020-10-13 09:39:14,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:39:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3222 transitions. [2020-10-13 09:39:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 09:39:14,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:14,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:14,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:39:14,650 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:14,650 INFO L82 PathProgramCache]: Analyzing trace with hash -701840452, now seen corresponding path program 1 times [2020-10-13 09:39:14,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:14,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237119050] [2020-10-13 09:39:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:15,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:15,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:39:15,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:39:15,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-13 09:39:15,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:39:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:39:15,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:15,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:15,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:15,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:15,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:15,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:39:15,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:15,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:15,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:39:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:39:15,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:39:15,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:16,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237119050] [2020-10-13 09:39:16,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:16,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:16,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086071809] [2020-10-13 09:39:16,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:16,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:16,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:16,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:16,097 INFO L87 Difference]: Start difference. First operand 1890 states and 3222 transitions. Second operand 5 states. [2020-10-13 09:39:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:25,895 INFO L93 Difference]: Finished difference Result 3835 states and 6527 transitions. [2020-10-13 09:39:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:25,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-13 09:39:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:25,908 INFO L225 Difference]: With dead ends: 3835 [2020-10-13 09:39:25,908 INFO L226 Difference]: Without dead ends: 1904 [2020-10-13 09:39:25,914 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 09:39:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-13 09:39:25,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1890. [2020-10-13 09:39:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-10-13 09:39:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3218 transitions. [2020-10-13 09:39:25,984 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3218 transitions. Word has length 135 [2020-10-13 09:39:25,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:25,986 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 3218 transitions. [2020-10-13 09:39:25,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:39:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3218 transitions. [2020-10-13 09:39:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 09:39:25,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:25,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:25,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:39:25,991 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:25,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1187414755, now seen corresponding path program 1 times [2020-10-13 09:39:25,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:25,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775214693] [2020-10-13 09:39:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:27,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:27,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 09:39:27,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:39:27,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-13 09:39:27,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:27,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 09:39:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:39:27,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:27,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:27,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:27,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:27,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:27,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:39:27,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:27,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:27,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:27,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 09:39:27,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:39:27,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:39:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:27,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775214693] [2020-10-13 09:39:27,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:27,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:27,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172437539] [2020-10-13 09:39:27,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:27,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:27,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:27,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:27,740 INFO L87 Difference]: Start difference. First operand 1890 states and 3218 transitions. Second operand 5 states. [2020-10-13 09:39:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:39,954 INFO L93 Difference]: Finished difference Result 3836 states and 6520 transitions. [2020-10-13 09:39:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:39,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-13 09:39:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:39,966 INFO L225 Difference]: With dead ends: 3836 [2020-10-13 09:39:39,967 INFO L226 Difference]: Without dead ends: 1904 [2020-10-13 09:39:39,973 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 09:39:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-13 09:39:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1890. [2020-10-13 09:39:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-10-13 09:39:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3214 transitions. [2020-10-13 09:39:40,026 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3214 transitions. Word has length 140 [2020-10-13 09:39:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:40,027 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 3214 transitions. [2020-10-13 09:39:40,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:39:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3214 transitions. [2020-10-13 09:39:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 09:39:40,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:40,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:40,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:39:40,030 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:40,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:40,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1378355856, now seen corresponding path program 1 times [2020-10-13 09:39:40,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:40,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269517822] [2020-10-13 09:39:40,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:40,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:40,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:39:40,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:39:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-13 09:39:40,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:39:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:39:40,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:40,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:40,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:40,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:39:40,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:40,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:40,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:41,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:41,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:39:41,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:41,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:39:41,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:39:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:39:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:41,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269517822] [2020-10-13 09:39:41,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:41,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:41,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242214960] [2020-10-13 09:39:41,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:41,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:41,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:41,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:41,130 INFO L87 Difference]: Start difference. First operand 1890 states and 3214 transitions. Second operand 5 states. [2020-10-13 09:39:54,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:54,198 INFO L93 Difference]: Finished difference Result 5553 states and 9613 transitions. [2020-10-13 09:39:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:54,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-13 09:39:54,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:54,218 INFO L225 Difference]: With dead ends: 5553 [2020-10-13 09:39:54,218 INFO L226 Difference]: Without dead ends: 3669 [2020-10-13 09:39:54,224 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 09:39:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2020-10-13 09:39:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3654. [2020-10-13 09:39:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2020-10-13 09:39:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5493 transitions. [2020-10-13 09:39:54,328 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5493 transitions. Word has length 141 [2020-10-13 09:39:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:54,328 INFO L479 AbstractCegarLoop]: Abstraction has 3654 states and 5493 transitions. [2020-10-13 09:39:54,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:39:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5493 transitions. [2020-10-13 09:39:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 09:39:54,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:54,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:54,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:39:54,332 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:54,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:54,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1064904185, now seen corresponding path program 1 times [2020-10-13 09:39:54,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:54,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457220623] [2020-10-13 09:39:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:57,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:57,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:39:57,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:39:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3153 [2020-10-13 09:39:57,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 09:39:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:39:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:57,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:57,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:57,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:57,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:57,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:39:57,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:57,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:57,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:57,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:57,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:57,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:39:57,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:39:57,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:39:57,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:57,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457220623] [2020-10-13 09:39:57,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:57,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:57,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603033709] [2020-10-13 09:39:57,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:57,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:57,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:57,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:57,762 INFO L87 Difference]: Start difference. First operand 3654 states and 5493 transitions. Second operand 5 states. [2020-10-13 09:40:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:10,228 INFO L93 Difference]: Finished difference Result 10822 states and 16621 transitions. [2020-10-13 09:40:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:10,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 09:40:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:10,262 INFO L225 Difference]: With dead ends: 10822 [2020-10-13 09:40:10,262 INFO L226 Difference]: Without dead ends: 7174 [2020-10-13 09:40:10,273 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 09:40:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2020-10-13 09:40:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 5429. [2020-10-13 09:40:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5429 states. [2020-10-13 09:40:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5429 states to 5429 states and 7673 transitions. [2020-10-13 09:40:10,467 INFO L78 Accepts]: Start accepts. Automaton has 5429 states and 7673 transitions. Word has length 142 [2020-10-13 09:40:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:10,467 INFO L479 AbstractCegarLoop]: Abstraction has 5429 states and 7673 transitions. [2020-10-13 09:40:10,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:40:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5429 states and 7673 transitions. [2020-10-13 09:40:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 09:40:10,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:10,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:10,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:40:10,471 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:10,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1341171413, now seen corresponding path program 1 times [2020-10-13 09:40:10,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:10,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019688233] [2020-10-13 09:40:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:11,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:11,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 09:40:11,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:40:11,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1223 [2020-10-13 09:40:11,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:11,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:40:11,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:40:11,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:40:11,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:11,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:11,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:11,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:11,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:40:11,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:40:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:40:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:40:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:11,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:11,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:40:11,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:11,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:40:11,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:40:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:40:12,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019688233] [2020-10-13 09:40:12,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:40:12,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:40:12,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901155010] [2020-10-13 09:40:12,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:40:12,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:12,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:40:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:40:12,072 INFO L87 Difference]: Start difference. First operand 5429 states and 7673 transitions. Second operand 5 states. [2020-10-13 09:40:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:24,370 INFO L93 Difference]: Finished difference Result 10884 states and 15424 transitions. [2020-10-13 09:40:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:24,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 09:40:24,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:24,396 INFO L225 Difference]: With dead ends: 10884 [2020-10-13 09:40:24,397 INFO L226 Difference]: Without dead ends: 5437 [2020-10-13 09:40:24,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 09:40:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2020-10-13 09:40:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5429. [2020-10-13 09:40:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5429 states. [2020-10-13 09:40:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5429 states to 5429 states and 7669 transitions. [2020-10-13 09:40:24,556 INFO L78 Accepts]: Start accepts. Automaton has 5429 states and 7669 transitions. Word has length 144 [2020-10-13 09:40:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:24,557 INFO L479 AbstractCegarLoop]: Abstraction has 5429 states and 7669 transitions. [2020-10-13 09:40:24,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:40:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5429 states and 7669 transitions. [2020-10-13 09:40:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 09:40:24,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:24,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:24,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:40:24,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:24,564 INFO L82 PathProgramCache]: Analyzing trace with hash -355525000, now seen corresponding path program 1 times [2020-10-13 09:40:24,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:24,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224911596] [2020-10-13 09:40:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:25,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:25,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:40:25,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:40:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-13 09:40:25,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:40:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:40:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 09:40:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:25,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:25,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:25,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:40:25,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:40:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:40:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:40:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:25,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:40:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:40:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:40:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:40:25,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224911596] [2020-10-13 09:40:25,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:40:25,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:40:25,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648115639] [2020-10-13 09:40:25,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:40:25,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:25,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:40:25,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:40:25,912 INFO L87 Difference]: Start difference. First operand 5429 states and 7669 transitions. Second operand 5 states. [2020-10-13 09:40:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:43,793 INFO L93 Difference]: Finished difference Result 13949 states and 20469 transitions. [2020-10-13 09:40:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:43,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 09:40:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:43,827 INFO L225 Difference]: With dead ends: 13949 [2020-10-13 09:40:43,828 INFO L226 Difference]: Without dead ends: 8526 [2020-10-13 09:40:43,840 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 09:40:43,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2020-10-13 09:40:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 8514. [2020-10-13 09:40:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8514 states. [2020-10-13 09:40:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8514 states to 8514 states and 11385 transitions. [2020-10-13 09:40:44,010 INFO L78 Accepts]: Start accepts. Automaton has 8514 states and 11385 transitions. Word has length 153 [2020-10-13 09:40:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:44,011 INFO L479 AbstractCegarLoop]: Abstraction has 8514 states and 11385 transitions. [2020-10-13 09:40:44,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:40:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8514 states and 11385 transitions. [2020-10-13 09:40:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 09:40:44,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:44,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:44,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:40:44,016 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:44,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:44,016 INFO L82 PathProgramCache]: Analyzing trace with hash -322686167, now seen corresponding path program 1 times [2020-10-13 09:40:44,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:44,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787425616] [2020-10-13 09:40:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:45,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:40:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:40:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1913 [2020-10-13 09:40:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:40:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 09:40:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:40:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:46,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:46,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:46,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:40:46,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:40:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:40:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:40:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:40:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:46,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:46,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:40:46,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 09:40:46,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:40:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:40:46,601 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-13 09:40:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:40:46,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787425616] [2020-10-13 09:40:46,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:40:46,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:40:46,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378497246] [2020-10-13 09:40:46,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:40:46,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:46,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:40:46,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:40:46,677 INFO L87 Difference]: Start difference. First operand 8514 states and 11385 transitions. Second operand 6 states. [2020-10-13 09:40:59,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:59,084 INFO L93 Difference]: Finished difference Result 17062 states and 22890 transitions. [2020-10-13 09:40:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:59,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-10-13 09:40:59,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:59,117 INFO L225 Difference]: With dead ends: 17062 [2020-10-13 09:40:59,118 INFO L226 Difference]: Without dead ends: 8522 [2020-10-13 09:40:59,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:40:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8522 states. [2020-10-13 09:40:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8522 to 8514. [2020-10-13 09:40:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8514 states. [2020-10-13 09:40:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8514 states to 8514 states and 11377 transitions. [2020-10-13 09:40:59,369 INFO L78 Accepts]: Start accepts. Automaton has 8514 states and 11377 transitions. Word has length 157 [2020-10-13 09:40:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:59,369 INFO L479 AbstractCegarLoop]: Abstraction has 8514 states and 11377 transitions. [2020-10-13 09:40:59,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:40:59,370 INFO L276 IsEmpty]: Start isEmpty. Operand 8514 states and 11377 transitions. [2020-10-13 09:40:59,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 09:40:59,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:59,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:59,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:40:59,375 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:59,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:59,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1094651696, now seen corresponding path program 1 times [2020-10-13 09:40:59,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:59,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939696000] [2020-10-13 09:40:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:59,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:00,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:00,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:41:00,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:41:00,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-10-13 09:41:00,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 09:41:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:41:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:00,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:00,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:00,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:00,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:41:00,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:00,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:00,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:00,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:41:00,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 09:41:00,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:41:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:41:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:00,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939696000] [2020-10-13 09:41:00,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:41:00,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:41:00,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450045186] [2020-10-13 09:41:00,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:00,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:00,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:00,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:00,852 INFO L87 Difference]: Start difference. First operand 8514 states and 11377 transitions. Second operand 5 states. [2020-10-13 09:41:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:18,746 INFO L93 Difference]: Finished difference Result 20535 states and 28470 transitions. [2020-10-13 09:41:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:18,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-13 09:41:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:18,798 INFO L225 Difference]: With dead ends: 20535 [2020-10-13 09:41:18,798 INFO L226 Difference]: Without dead ends: 12027 [2020-10-13 09:41:18,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:41:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12027 states. [2020-10-13 09:41:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12027 to 11151. [2020-10-13 09:41:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11151 states. [2020-10-13 09:41:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11151 states to 11151 states and 14500 transitions. [2020-10-13 09:41:19,101 INFO L78 Accepts]: Start accepts. Automaton has 11151 states and 14500 transitions. Word has length 176 [2020-10-13 09:41:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:19,101 INFO L479 AbstractCegarLoop]: Abstraction has 11151 states and 14500 transitions. [2020-10-13 09:41:19,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 11151 states and 14500 transitions. [2020-10-13 09:41:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 09:41:19,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:19,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:19,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:41:19,112 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:19,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1189249173, now seen corresponding path program 1 times [2020-10-13 09:41:19,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:19,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869475518] [2020-10-13 09:41:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:21,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:21,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-13 09:41:21,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:41:21,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-10-13 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:41:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:21,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:21,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:21,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:21,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:21,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:41:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:21,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:21,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:41:21,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:21,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 09:41:21,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:21,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:21,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:41:21,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:21,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869475518] [2020-10-13 09:41:21,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:21,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:41:21,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106089568] [2020-10-13 09:41:21,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:21,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:21,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:21,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:21,933 INFO L87 Difference]: Start difference. First operand 11151 states and 14500 transitions. Second operand 5 states. [2020-10-13 09:41:27,009 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-13 09:41:40,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:40,814 INFO L93 Difference]: Finished difference Result 22330 states and 29121 transitions. [2020-10-13 09:41:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:40,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-13 09:41:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:40,871 INFO L225 Difference]: With dead ends: 22330 [2020-10-13 09:41:40,872 INFO L226 Difference]: Without dead ends: 11159 [2020-10-13 09:41:40,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 09:41:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11159 states. [2020-10-13 09:41:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11159 to 11151. [2020-10-13 09:41:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11151 states. [2020-10-13 09:41:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11151 states to 11151 states and 14485 transitions. [2020-10-13 09:41:41,137 INFO L78 Accepts]: Start accepts. Automaton has 11151 states and 14485 transitions. Word has length 197 [2020-10-13 09:41:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:41,138 INFO L479 AbstractCegarLoop]: Abstraction has 11151 states and 14485 transitions. [2020-10-13 09:41:41,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 11151 states and 14485 transitions. [2020-10-13 09:41:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 09:41:41,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:41,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:41,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:41:41,149 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:41,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1219051476, now seen corresponding path program 1 times [2020-10-13 09:41:41,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:41,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550915374] [2020-10-13 09:41:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:41,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:42,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:42,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 09:41:42,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:41:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-10-13 09:41:42,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 09:41:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:41:42,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:43,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:43,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:43,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:43,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:41:43,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:43,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:43,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:43,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:43,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 09:41:43,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 09:41:43,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 09:41:43,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:43,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550915374] [2020-10-13 09:41:43,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:43,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:41:43,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527225371] [2020-10-13 09:41:43,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:43,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:43,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:43,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:43,523 INFO L87 Difference]: Start difference. First operand 11151 states and 14485 transitions. Second operand 5 states. [2020-10-13 09:42:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:08,812 INFO L93 Difference]: Finished difference Result 27583 states and 36479 transitions. [2020-10-13 09:42:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:08,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-13 09:42:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:08,878 INFO L225 Difference]: With dead ends: 27583 [2020-10-13 09:42:08,878 INFO L226 Difference]: Without dead ends: 16438 [2020-10-13 09:42:08,905 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 09:42:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16438 states. [2020-10-13 09:42:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16438 to 15548. [2020-10-13 09:42:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15548 states. [2020-10-13 09:42:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15548 states to 15548 states and 19910 transitions. [2020-10-13 09:42:09,262 INFO L78 Accepts]: Start accepts. Automaton has 15548 states and 19910 transitions. Word has length 208 [2020-10-13 09:42:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:09,263 INFO L479 AbstractCegarLoop]: Abstraction has 15548 states and 19910 transitions. [2020-10-13 09:42:09,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:42:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 15548 states and 19910 transitions. [2020-10-13 09:42:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-13 09:42:09,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:09,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:09,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:42:09,273 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2032503218, now seen corresponding path program 1 times [2020-10-13 09:42:09,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:09,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106384900] [2020-10-13 09:42:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:10,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:11,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:11,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 09:42:11,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:42:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2284 [2020-10-13 09:42:11,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-13 09:42:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:42:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:11,845 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18