/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:56:33,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:56:33,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:56:33,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:56:33,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:56:33,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:56:33,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:56:33,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:56:33,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:56:33,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:56:33,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:56:33,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:56:33,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:56:33,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:56:33,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:56:33,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:56:33,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:56:33,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:56:33,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:56:33,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:56:33,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:56:33,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:56:33,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:56:33,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:56:33,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:56:33,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:56:33,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:56:33,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:56:33,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:56:33,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:56:33,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:56:33,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:56:33,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:56:33,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:56:33,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:56:33,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:56:33,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:56:33,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:56:33,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:56:33,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:56:33,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:56:33,486 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 [2020-10-15 02:56:33,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:56:33,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:56:33,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:56:33,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:56:33,530 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:56:33,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:56:33,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:56:33,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:56:33,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:56:33,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:56:33,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:56:33,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:56:33,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:56:33,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:56:33,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:56:33,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:56:33,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:56:33,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:56:33,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:56:33,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:56:33,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:56:33,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:56:33,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:56:33,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:56:33,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:56:33,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:56:33,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:56:33,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:56:33,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:56:33,538 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:56:33,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:56:33,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:56:33,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:56:33,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:56:33,879 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:56:33,880 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:56:33,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/704826f1b/69e9d69d893041108028a81c9c6d2f38/FLAGfcee390b3 [2020-10-15 02:56:34,436 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:56:34,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:56:34,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/704826f1b/69e9d69d893041108028a81c9c6d2f38/FLAGfcee390b3 [2020-10-15 02:56:34,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/704826f1b/69e9d69d893041108028a81c9c6d2f38 [2020-10-15 02:56:34,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:56:34,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:56:34,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:56:34,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:56:34,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:56:34,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:34" (1/1) ... [2020-10-15 02:56:34,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718a428c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:34, skipping insertion in model container [2020-10-15 02:56:34,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:34" (1/1) ... [2020-10-15 02:56:34,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:56:34,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:56:35,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:56:35,488 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:56:35,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:56:35,671 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:56:35,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35 WrapperNode [2020-10-15 02:56:35,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:56:35,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:56:35,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:56:35,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:56:35,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (1/1) ... [2020-10-15 02:56:35,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (1/1) ... [2020-10-15 02:56:35,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (1/1) ... [2020-10-15 02:56:35,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (1/1) ... [2020-10-15 02:56:35,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (1/1) ... [2020-10-15 02:56:35,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (1/1) ... [2020-10-15 02:56:35,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (1/1) ... [2020-10-15 02:56:35,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:56:35,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:56:35,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:56:35,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:56:35,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (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 [2020-10-15 02:56:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:56:35,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:56:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:56:35,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:56:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:56:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:56:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 02:56:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:56:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:56:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:56:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:56:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:56:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:56:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:56:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:56:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:56:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:56:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:56:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:56:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:56:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:56:37,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:56:37,197 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:56:37,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:37 BoogieIcfgContainer [2020-10-15 02:56:37,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:56:37,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:56:37,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:56:37,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:56:37,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:34" (1/3) ... [2020-10-15 02:56:37,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f67555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:37, skipping insertion in model container [2020-10-15 02:56:37,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:35" (2/3) ... [2020-10-15 02:56:37,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f67555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:37, skipping insertion in model container [2020-10-15 02:56:37,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:37" (3/3) ... [2020-10-15 02:56:37,214 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:56:37,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:56:37,234 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:56:37,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:56:37,278 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:56:37,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:56:37,279 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:56:37,279 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:56:37,279 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:56:37,280 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:56:37,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:56:37,280 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:56:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states. [2020-10-15 02:56:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 02:56:37,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:37,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:56:37,328 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:37,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1212431174, now seen corresponding path program 1 times [2020-10-15 02:56:37,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:37,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093098916] [2020-10-15 02:56:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:39,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:42,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:42,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 02:56:42,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 02:56:42,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-15 02:56:42,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:42,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 02:56:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 02:56:42,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:56:43,257 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:56:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:43,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:43,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:43,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:56:43,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:43,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:43,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093098916] [2020-10-15 02:56:43,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:43,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:56:43,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374128806] [2020-10-15 02:56:43,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:56:43,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:43,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:56:43,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:56:43,363 INFO L87 Difference]: Start difference. First operand 317 states. Second operand 4 states. [2020-10-15 02:56:43,636 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 02:56:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:45,246 INFO L93 Difference]: Finished difference Result 641 states and 1120 transitions. [2020-10-15 02:56:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:45,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-15 02:56:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:45,283 INFO L225 Difference]: With dead ends: 641 [2020-10-15 02:56:45,284 INFO L226 Difference]: Without dead ends: 514 [2020-10-15 02:56:45,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-15 02:56:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 512. [2020-10-15 02:56:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-15 02:56:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 761 transitions. [2020-10-15 02:56:45,431 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 761 transitions. Word has length 150 [2020-10-15 02:56:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:45,435 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 761 transitions. [2020-10-15 02:56:45,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:56:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 761 transitions. [2020-10-15 02:56:45,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 02:56:45,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:45,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:56:45,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:56:45,452 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2117865266, now seen corresponding path program 1 times [2020-10-15 02:56:45,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:45,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625391743] [2020-10-15 02:56:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:45,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:45,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:50,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:50,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 02:56:50,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 02:56:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 02:56:50,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:50,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 02:56:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 02:56:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:50,892 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:56:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:50,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:50,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:50,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:50,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:56:50,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:50,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:50,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625391743] [2020-10-15 02:56:50,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:50,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:56:50,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171771337] [2020-10-15 02:56:50,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:56:50,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:50,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:56:50,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:56:50,953 INFO L87 Difference]: Start difference. First operand 512 states and 761 transitions. Second operand 4 states. [2020-10-15 02:56:51,138 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 02:56:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:52,283 INFO L93 Difference]: Finished difference Result 1076 states and 1646 transitions. [2020-10-15 02:56:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:52,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-15 02:56:52,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:52,291 INFO L225 Difference]: With dead ends: 1076 [2020-10-15 02:56:52,291 INFO L226 Difference]: Without dead ends: 884 [2020-10-15 02:56:52,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-10-15 02:56:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 882. [2020-10-15 02:56:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-15 02:56:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1323 transitions. [2020-10-15 02:56:52,330 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1323 transitions. Word has length 150 [2020-10-15 02:56:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:52,330 INFO L479 AbstractCegarLoop]: Abstraction has 882 states and 1323 transitions. [2020-10-15 02:56:52,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:56:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1323 transitions. [2020-10-15 02:56:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 02:56:52,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:52,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:56:52,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:56:52,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash -922154316, now seen corresponding path program 1 times [2020-10-15 02:56:52,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:52,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680913904] [2020-10-15 02:56:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:53,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:57,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:57,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 02:56:57,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 02:56:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 02:56:57,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:57,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 02:56:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 42 [2020-10-15 02:56:57,800 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:56:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:57,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:57,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:57,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:57,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:56:57,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:57,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:57,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:57,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680913904] [2020-10-15 02:56:57,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:57,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:57,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504892437] [2020-10-15 02:56:57,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:57,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:57,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:57,881 INFO L87 Difference]: Start difference. First operand 882 states and 1323 transitions. Second operand 5 states. [2020-10-15 02:57:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:00,208 INFO L93 Difference]: Finished difference Result 2560 states and 3832 transitions. [2020-10-15 02:57:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:00,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-15 02:57:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:00,223 INFO L225 Difference]: With dead ends: 2560 [2020-10-15 02:57:00,224 INFO L226 Difference]: Without dead ends: 1699 [2020-10-15 02:57:00,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2020-10-15 02:57:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2020-10-15 02:57:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1697 states. [2020-10-15 02:57:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2521 transitions. [2020-10-15 02:57:00,323 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2521 transitions. Word has length 150 [2020-10-15 02:57:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:00,324 INFO L479 AbstractCegarLoop]: Abstraction has 1697 states and 2521 transitions. [2020-10-15 02:57:00,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:00,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2521 transitions. [2020-10-15 02:57:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-15 02:57:00,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:00,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:00,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:57:00,339 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:00,341 INFO L82 PathProgramCache]: Analyzing trace with hash 394487490, now seen corresponding path program 1 times [2020-10-15 02:57:00,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:00,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985451356] [2020-10-15 02:57:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:00,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:03,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:05,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-15 02:57:05,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 02:57:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 02:57:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:05,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 02:57:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:05,731 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:05,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:05,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:05,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:57:05,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:05,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:05,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985451356] [2020-10-15 02:57:05,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:05,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:05,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985150636] [2020-10-15 02:57:05,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:05,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:05,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:05,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:05,902 INFO L87 Difference]: Start difference. First operand 1697 states and 2521 transitions. Second operand 5 states. [2020-10-15 02:57:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:08,461 INFO L93 Difference]: Finished difference Result 4969 states and 7368 transitions. [2020-10-15 02:57:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:08,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-15 02:57:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:08,478 INFO L225 Difference]: With dead ends: 4969 [2020-10-15 02:57:08,478 INFO L226 Difference]: Without dead ends: 3283 [2020-10-15 02:57:08,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2020-10-15 02:57:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3281. [2020-10-15 02:57:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3281 states. [2020-10-15 02:57:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4821 transitions. [2020-10-15 02:57:08,629 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4821 transitions. Word has length 151 [2020-10-15 02:57:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:08,630 INFO L479 AbstractCegarLoop]: Abstraction has 3281 states and 4821 transitions. [2020-10-15 02:57:08,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4821 transitions. [2020-10-15 02:57:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 02:57:08,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:08,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:08,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:57:08,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:08,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1027617131, now seen corresponding path program 1 times [2020-10-15 02:57:08,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:08,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169283364] [2020-10-15 02:57:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:08,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:09,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:09,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:13,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:13,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:13,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:13,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-15 02:57:13,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 02:57:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 02:57:13,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:13,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 02:57:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:14,027 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:14,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:14,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:14,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:57:14,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:14,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:14,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169283364] [2020-10-15 02:57:14,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:14,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:14,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831693812] [2020-10-15 02:57:14,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:14,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:14,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:14,111 INFO L87 Difference]: Start difference. First operand 3281 states and 4821 transitions. Second operand 5 states. [2020-10-15 02:57:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:17,157 INFO L93 Difference]: Finished difference Result 9304 states and 13692 transitions. [2020-10-15 02:57:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:17,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-15 02:57:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:17,187 INFO L225 Difference]: With dead ends: 9304 [2020-10-15 02:57:17,187 INFO L226 Difference]: Without dead ends: 6344 [2020-10-15 02:57:17,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:17,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2020-10-15 02:57:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 6342. [2020-10-15 02:57:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6342 states. [2020-10-15 02:57:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6342 states to 6342 states and 9216 transitions. [2020-10-15 02:57:17,520 INFO L78 Accepts]: Start accepts. Automaton has 6342 states and 9216 transitions. Word has length 152 [2020-10-15 02:57:17,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:17,521 INFO L479 AbstractCegarLoop]: Abstraction has 6342 states and 9216 transitions. [2020-10-15 02:57:17,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6342 states and 9216 transitions. [2020-10-15 02:57:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-15 02:57:17,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:17,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:17,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:57:17,532 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:17,532 INFO L82 PathProgramCache]: Analyzing trace with hash 474351428, now seen corresponding path program 1 times [2020-10-15 02:57:17,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:17,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759174854] [2020-10-15 02:57:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:18,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:21,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:22,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-15 02:57:22,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 02:57:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:57:22,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:22,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 02:57:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:22,824 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:22,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:57:22,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:22,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:22,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759174854] [2020-10-15 02:57:22,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:22,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:22,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591839330] [2020-10-15 02:57:22,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:22,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:22,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:22,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:22,906 INFO L87 Difference]: Start difference. First operand 6342 states and 9216 transitions. Second operand 5 states. [2020-10-15 02:57:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:25,854 INFO L93 Difference]: Finished difference Result 16890 states and 24538 transitions. [2020-10-15 02:57:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:25,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-15 02:57:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:25,900 INFO L225 Difference]: With dead ends: 16890 [2020-10-15 02:57:25,901 INFO L226 Difference]: Without dead ends: 11052 [2020-10-15 02:57:25,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11052 states. [2020-10-15 02:57:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11052 to 11050. [2020-10-15 02:57:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11050 states. [2020-10-15 02:57:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11050 states to 11050 states and 15800 transitions. [2020-10-15 02:57:26,532 INFO L78 Accepts]: Start accepts. Automaton has 11050 states and 15800 transitions. Word has length 153 [2020-10-15 02:57:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:26,532 INFO L479 AbstractCegarLoop]: Abstraction has 11050 states and 15800 transitions. [2020-10-15 02:57:26,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 11050 states and 15800 transitions. [2020-10-15 02:57:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-15 02:57:26,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:26,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:26,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:57:26,551 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:26,551 INFO L82 PathProgramCache]: Analyzing trace with hash -312484361, now seen corresponding path program 1 times [2020-10-15 02:57:26,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:26,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810989035] [2020-10-15 02:57:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:27,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:31,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:31,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-15 02:57:31,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 02:57:31,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:57:31,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:31,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 02:57:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:31,803 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:31,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:31,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:31,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:31,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:57:31,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:31,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:31,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810989035] [2020-10-15 02:57:31,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:31,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:31,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690347306] [2020-10-15 02:57:31,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:31,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:31,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:31,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:31,873 INFO L87 Difference]: Start difference. First operand 11050 states and 15800 transitions. Second operand 5 states. [2020-10-15 02:57:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:34,673 INFO L93 Difference]: Finished difference Result 29950 states and 42624 transitions. [2020-10-15 02:57:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:34,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-15 02:57:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:34,728 INFO L225 Difference]: With dead ends: 29950 [2020-10-15 02:57:34,729 INFO L226 Difference]: Without dead ends: 19138 [2020-10-15 02:57:34,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19138 states. [2020-10-15 02:57:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19138 to 19136. [2020-10-15 02:57:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19136 states. [2020-10-15 02:57:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19136 states to 19136 states and 26877 transitions. [2020-10-15 02:57:35,785 INFO L78 Accepts]: Start accepts. Automaton has 19136 states and 26877 transitions. Word has length 154 [2020-10-15 02:57:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:35,785 INFO L479 AbstractCegarLoop]: Abstraction has 19136 states and 26877 transitions. [2020-10-15 02:57:35,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 19136 states and 26877 transitions. [2020-10-15 02:57:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-15 02:57:35,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:35,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:35,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:57:35,809 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1389773571, now seen corresponding path program 1 times [2020-10-15 02:57:35,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:35,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648877228] [2020-10-15 02:57:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:40,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:40,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-15 02:57:40,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:40,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:57:40,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:40,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:40,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:40,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 02:57:40,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 02:57:40,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:41,044 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:41,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:41,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:41,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:57:41,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:41,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:41,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:41,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648877228] [2020-10-15 02:57:41,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:41,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:41,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640850786] [2020-10-15 02:57:41,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:41,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:41,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:41,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:41,094 INFO L87 Difference]: Start difference. First operand 19136 states and 26877 transitions. Second operand 5 states. [2020-10-15 02:57:43,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:43,270 INFO L93 Difference]: Finished difference Result 32911 states and 46271 transitions. [2020-10-15 02:57:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:43,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-15 02:57:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:43,303 INFO L225 Difference]: With dead ends: 32911 [2020-10-15 02:57:43,303 INFO L226 Difference]: Without dead ends: 14041 [2020-10-15 02:57:43,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14041 states. [2020-10-15 02:57:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14041 to 14031. [2020-10-15 02:57:44,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14031 states. [2020-10-15 02:57:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14031 states to 14031 states and 19710 transitions. [2020-10-15 02:57:44,020 INFO L78 Accepts]: Start accepts. Automaton has 14031 states and 19710 transitions. Word has length 155 [2020-10-15 02:57:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:44,020 INFO L479 AbstractCegarLoop]: Abstraction has 14031 states and 19710 transitions. [2020-10-15 02:57:44,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 14031 states and 19710 transitions. [2020-10-15 02:57:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-15 02:57:44,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:44,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:44,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:57:44,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:44,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1043599867, now seen corresponding path program 1 times [2020-10-15 02:57:44,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:44,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482869063] [2020-10-15 02:57:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:49,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:49,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-15 02:57:49,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 02:57:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 02:57:49,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:49,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:57:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:57:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 02:57:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:49,337 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:49,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:49,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:49,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:49,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 02:57:49,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:49,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:49,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:57:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:49,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482869063] [2020-10-15 02:57:49,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:49,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:49,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770149198] [2020-10-15 02:57:49,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:57:49,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:49,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:57:49,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:49,410 INFO L87 Difference]: Start difference. First operand 14031 states and 19710 transitions. Second operand 6 states. [2020-10-15 02:57:49,743 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 02:57:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:51,682 INFO L93 Difference]: Finished difference Result 26973 states and 38105 transitions. [2020-10-15 02:57:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:57:51,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-10-15 02:57:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:51,707 INFO L225 Difference]: With dead ends: 26973 [2020-10-15 02:57:51,707 INFO L226 Difference]: Without dead ends: 14031 [2020-10-15 02:57:51,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:57:51,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14031 states. [2020-10-15 02:57:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14031 to 14031. [2020-10-15 02:57:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14031 states. [2020-10-15 02:57:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14031 states to 14031 states and 19474 transitions. [2020-10-15 02:57:52,591 INFO L78 Accepts]: Start accepts. Automaton has 14031 states and 19474 transitions. Word has length 162 [2020-10-15 02:57:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:52,592 INFO L479 AbstractCegarLoop]: Abstraction has 14031 states and 19474 transitions. [2020-10-15 02:57:52,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 14031 states and 19474 transitions. [2020-10-15 02:57:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-15 02:57:52,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:52,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:52,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:57:52,608 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:52,608 INFO L82 PathProgramCache]: Analyzing trace with hash -275217024, now seen corresponding path program 1 times [2020-10-15 02:57:52,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:52,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026990829] [2020-10-15 02:57:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:57,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:57,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-15 02:57:57,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 02:57:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:57:57,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:57,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 02:57:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:57,915 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:57:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:57,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:57,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:57,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:57,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:57,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:57,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:57,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:57,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:57,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026990829] [2020-10-15 02:57:57,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:57,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:57,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127872873] [2020-10-15 02:57:57,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:57,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:57,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:57,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:57,988 INFO L87 Difference]: Start difference. First operand 14031 states and 19474 transitions. Second operand 5 states. [2020-10-15 02:57:58,200 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 02:58:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:01,212 INFO L93 Difference]: Finished difference Result 24947 states and 34592 transitions. [2020-10-15 02:58:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:58:01,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-15 02:58:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:01,234 INFO L225 Difference]: With dead ends: 24947 [2020-10-15 02:58:01,234 INFO L226 Difference]: Without dead ends: 14026 [2020-10-15 02:58:01,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:58:01,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14026 states. [2020-10-15 02:58:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14026 to 14020. [2020-10-15 02:58:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14020 states. [2020-10-15 02:58:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14020 states to 14020 states and 19369 transitions. [2020-10-15 02:58:02,197 INFO L78 Accepts]: Start accepts. Automaton has 14020 states and 19369 transitions. Word has length 162 [2020-10-15 02:58:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:02,197 INFO L479 AbstractCegarLoop]: Abstraction has 14020 states and 19369 transitions. [2020-10-15 02:58:02,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 14020 states and 19369 transitions. [2020-10-15 02:58:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-15 02:58:02,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:02,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:58:02,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:58:02,209 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:02,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1410235109, now seen corresponding path program 1 times [2020-10-15 02:58:02,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:02,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366210140] [2020-10-15 02:58:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:02,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:03,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:03,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:07,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-15 02:58:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:07,467 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:58:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:07,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:07,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:07,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:58:07,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:07,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:07,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:07,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366210140] [2020-10-15 02:58:07,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:07,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:58:07,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162452451] [2020-10-15 02:58:07,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:58:07,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:07,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:58:07,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:58:07,527 INFO L87 Difference]: Start difference. First operand 14020 states and 19369 transitions. Second operand 5 states. [2020-10-15 02:58:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:11,069 INFO L93 Difference]: Finished difference Result 40918 states and 56379 transitions. [2020-10-15 02:58:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:58:11,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-15 02:58:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:11,099 INFO L225 Difference]: With dead ends: 40918 [2020-10-15 02:58:11,100 INFO L226 Difference]: Without dead ends: 27143 [2020-10-15 02:58:11,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:58:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27143 states. [2020-10-15 02:58:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27143 to 27141. [2020-10-15 02:58:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27141 states. [2020-10-15 02:58:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27141 states to 27141 states and 36955 transitions. [2020-10-15 02:58:12,818 INFO L78 Accepts]: Start accepts. Automaton has 27141 states and 36955 transitions. Word has length 163 [2020-10-15 02:58:12,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:12,818 INFO L479 AbstractCegarLoop]: Abstraction has 27141 states and 36955 transitions. [2020-10-15 02:58:12,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 27141 states and 36955 transitions. [2020-10-15 02:58:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 02:58:12,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:12,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:58:12,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:58:12,840 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:12,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:12,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1426150193, now seen corresponding path program 1 times [2020-10-15 02:58:12,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:12,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383814859] [2020-10-15 02:58:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:12,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:17,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:17,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 02:58:17,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:58:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:58:17,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:17,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:58:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 02:58:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 02:58:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:18,119 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:58:18,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:18,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:18,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:18,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:58:18,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:18,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:18,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383814859] [2020-10-15 02:58:18,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:18,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:58:18,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617278652] [2020-10-15 02:58:18,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:58:18,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:18,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:58:18,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:58:18,166 INFO L87 Difference]: Start difference. First operand 27141 states and 36955 transitions. Second operand 6 states. [2020-10-15 02:58:18,389 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 02:58:23,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:23,891 INFO L93 Difference]: Finished difference Result 67635 states and 99560 transitions. [2020-10-15 02:58:23,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:58:23,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-15 02:58:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:23,975 INFO L225 Difference]: With dead ends: 67635 [2020-10-15 02:58:23,975 INFO L226 Difference]: Without dead ends: 57505 [2020-10-15 02:58:23,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:58:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57505 states. [2020-10-15 02:58:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57505 to 40721. [2020-10-15 02:58:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40721 states. [2020-10-15 02:58:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40721 states to 40721 states and 57515 transitions. [2020-10-15 02:58:27,040 INFO L78 Accepts]: Start accepts. Automaton has 40721 states and 57515 transitions. Word has length 164 [2020-10-15 02:58:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:27,040 INFO L479 AbstractCegarLoop]: Abstraction has 40721 states and 57515 transitions. [2020-10-15 02:58:27,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:58:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 40721 states and 57515 transitions. [2020-10-15 02:58:27,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 02:58:27,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:27,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:58:27,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:58:27,054 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:27,054 INFO L82 PathProgramCache]: Analyzing trace with hash -230439243, now seen corresponding path program 1 times [2020-10-15 02:58:27,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:27,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404208732] [2020-10-15 02:58:27,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:32,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:32,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 02:58:32,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:58:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:58:32,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:32,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:58:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 02:58:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 02:58:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:32,315 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:58:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:32,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:32,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:32,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:32,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:58:32,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:32,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:32,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:32,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:32,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:32,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:32,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404208732] [2020-10-15 02:58:32,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:32,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:58:32,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964084967] [2020-10-15 02:58:32,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:58:32,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:32,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:58:32,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:58:32,358 INFO L87 Difference]: Start difference. First operand 40721 states and 57515 transitions. Second operand 5 states. [2020-10-15 02:58:32,561 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 02:58:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:37,571 INFO L93 Difference]: Finished difference Result 60253 states and 87461 transitions. [2020-10-15 02:58:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:58:37,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-15 02:58:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:37,614 INFO L225 Difference]: With dead ends: 60253 [2020-10-15 02:58:37,614 INFO L226 Difference]: Without dead ends: 40723 [2020-10-15 02:58:37,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:58:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40723 states. [2020-10-15 02:58:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40723 to 40721. [2020-10-15 02:58:40,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40721 states. [2020-10-15 02:58:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40721 states to 40721 states and 57227 transitions. [2020-10-15 02:58:40,446 INFO L78 Accepts]: Start accepts. Automaton has 40721 states and 57227 transitions. Word has length 164 [2020-10-15 02:58:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:40,446 INFO L479 AbstractCegarLoop]: Abstraction has 40721 states and 57227 transitions. [2020-10-15 02:58:40,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 40721 states and 57227 transitions. [2020-10-15 02:58:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 02:58:40,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:40,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:58:40,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:58:40,461 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1159268296, now seen corresponding path program 1 times [2020-10-15 02:58:40,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:40,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991932555] [2020-10-15 02:58:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:45,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:45,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 02:58:45,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:58:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:58:45,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:45,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:58:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 02:58:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:58:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:45,746 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:58:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:45,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:45,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:58:45,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:45,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:45,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:45,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991932555] [2020-10-15 02:58:45,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:45,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:58:45,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567403706] [2020-10-15 02:58:45,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:58:45,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:45,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:58:45,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:58:45,795 INFO L87 Difference]: Start difference. First operand 40721 states and 57227 transitions. Second operand 5 states. [2020-10-15 02:58:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:50,211 INFO L93 Difference]: Finished difference Result 76531 states and 107625 transitions. [2020-10-15 02:58:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:58:50,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-15 02:58:50,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:50,254 INFO L225 Difference]: With dead ends: 76531 [2020-10-15 02:58:50,254 INFO L226 Difference]: Without dead ends: 36260 [2020-10-15 02:58:50,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:58:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36260 states. [2020-10-15 02:58:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36260 to 36260. [2020-10-15 02:58:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36260 states. [2020-10-15 02:58:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36260 states to 36260 states and 50913 transitions. [2020-10-15 02:58:52,760 INFO L78 Accepts]: Start accepts. Automaton has 36260 states and 50913 transitions. Word has length 164 [2020-10-15 02:58:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:52,760 INFO L479 AbstractCegarLoop]: Abstraction has 36260 states and 50913 transitions. [2020-10-15 02:58:52,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 36260 states and 50913 transitions. [2020-10-15 02:58:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-15 02:58:52,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:52,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:58:52,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:58:52,779 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:52,779 INFO L82 PathProgramCache]: Analyzing trace with hash -240876062, now seen corresponding path program 1 times [2020-10-15 02:58:52,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:52,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348358362] [2020-10-15 02:58:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:52,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:57,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:57,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-15 02:58:57,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:58:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 02:58:57,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:57,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:58:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-15 02:58:57,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 02:58:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:58,350 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:58:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:58,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:58,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:58,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:58:58,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:58,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:58,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348358362] [2020-10-15 02:58:58,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:58,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 02:58:58,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447691630] [2020-10-15 02:58:58,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:58:58,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:58,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:58:58,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:58:58,413 INFO L87 Difference]: Start difference. First operand 36260 states and 50913 transitions. Second operand 12 states. [2020-10-15 02:58:58,959 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-15 02:59:14,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:14,841 INFO L93 Difference]: Finished difference Result 155956 states and 225681 transitions. [2020-10-15 02:59:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:59:14,842 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-15 02:59:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:15,024 INFO L225 Difference]: With dead ends: 155956 [2020-10-15 02:59:15,024 INFO L226 Difference]: Without dead ends: 136922 [2020-10-15 02:59:15,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2020-10-15 02:59:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136922 states. [2020-10-15 02:59:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136922 to 43092. [2020-10-15 02:59:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43092 states. [2020-10-15 02:59:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43092 states to 43092 states and 58849 transitions. [2020-10-15 02:59:19,609 INFO L78 Accepts]: Start accepts. Automaton has 43092 states and 58849 transitions. Word has length 170 [2020-10-15 02:59:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:59:19,610 INFO L479 AbstractCegarLoop]: Abstraction has 43092 states and 58849 transitions. [2020-10-15 02:59:19,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:59:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 43092 states and 58849 transitions. [2020-10-15 02:59:19,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-15 02:59:19,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:19,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:59:19,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:59:19,633 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:19,634 INFO L82 PathProgramCache]: Analyzing trace with hash -697379613, now seen corresponding path program 1 times [2020-10-15 02:59:19,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:19,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562675130] [2020-10-15 02:59:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:25,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5501 [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:59:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:25,424 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:59:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:59:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:25,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:25,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:59:25,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:59:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:59:25,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:25,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:59:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:59:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:59:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:59:25,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562675130] [2020-10-15 02:59:25,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:59:25,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:59:25,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800498347] [2020-10-15 02:59:25,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:59:25,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:59:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:59:25,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:59:25,464 INFO L87 Difference]: Start difference. First operand 43092 states and 58849 transitions. Second operand 5 states. [2020-10-15 02:59:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:29,953 INFO L93 Difference]: Finished difference Result 78094 states and 106679 transitions. [2020-10-15 02:59:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:59:29,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-15 02:59:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:29,988 INFO L225 Difference]: With dead ends: 78094 [2020-10-15 02:59:29,989 INFO L226 Difference]: Without dead ends: 35653 [2020-10-15 02:59:30,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:59:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35653 states. [2020-10-15 02:59:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35653 to 35652. [2020-10-15 02:59:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35652 states. [2020-10-15 02:59:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35652 states to 35652 states and 48545 transitions. [2020-10-15 02:59:33,187 INFO L78 Accepts]: Start accepts. Automaton has 35652 states and 48545 transitions. Word has length 170 [2020-10-15 02:59:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:59:33,187 INFO L479 AbstractCegarLoop]: Abstraction has 35652 states and 48545 transitions. [2020-10-15 02:59:33,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:59:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 35652 states and 48545 transitions. [2020-10-15 02:59:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-15 02:59:33,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:33,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:59:33,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:59:33,202 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1081890237, now seen corresponding path program 1 times [2020-10-15 02:59:33,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:33,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801040117] [2020-10-15 02:59:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:33,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:33,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:38,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:38,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-15 02:59:38,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 02:59:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:59:38,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:38,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:59:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:59:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 02:59:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:38,463 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:59:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:59:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:38,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:38,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:59:38,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:59:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:59:38,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:38,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:59:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:59:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:59:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:59:38,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801040117] [2020-10-15 02:59:38,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:59:38,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:59:38,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292653799] [2020-10-15 02:59:38,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:59:38,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:59:38,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:59:38,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:59:38,529 INFO L87 Difference]: Start difference. First operand 35652 states and 48545 transitions. Second operand 7 states. [2020-10-15 02:59:38,767 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 02:59:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:43,450 INFO L93 Difference]: Finished difference Result 70242 states and 95903 transitions. [2020-10-15 02:59:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:59:43,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-15 02:59:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:43,488 INFO L225 Difference]: With dead ends: 70242 [2020-10-15 02:59:43,488 INFO L226 Difference]: Without dead ends: 35652 [2020-10-15 02:59:43,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:59:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35652 states. [2020-10-15 02:59:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35652 to 35652. [2020-10-15 02:59:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35652 states. [2020-10-15 02:59:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35652 states to 35652 states and 47893 transitions. [2020-10-15 02:59:46,717 INFO L78 Accepts]: Start accepts. Automaton has 35652 states and 47893 transitions. Word has length 171 [2020-10-15 02:59:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:59:46,717 INFO L479 AbstractCegarLoop]: Abstraction has 35652 states and 47893 transitions. [2020-10-15 02:59:46,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:59:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 35652 states and 47893 transitions. [2020-10-15 02:59:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-15 02:59:46,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:46,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:59:46,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:59:46,731 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:46,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:46,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1206869927, now seen corresponding path program 1 times [2020-10-15 02:59:46,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:46,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117358857] [2020-10-15 02:59:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:47,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:47,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:51,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:51,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-15 02:59:51,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 02:59:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:59:51,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:51,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:59:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:59:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-15 02:59:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:52,002 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:59:52,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:59:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:52,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:52,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:52,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:59:52,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:59:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:59:52,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:52,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:59:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:59:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:59:52,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:59:52,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117358857] [2020-10-15 02:59:52,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:59:52,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:59:52,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23228544] [2020-10-15 02:59:52,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:59:52,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:59:52,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:59:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:59:52,059 INFO L87 Difference]: Start difference. First operand 35652 states and 47893 transitions. Second operand 5 states. [2020-10-15 02:59:52,274 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-15 02:59:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:57,948 INFO L93 Difference]: Finished difference Result 63090 states and 84681 transitions. [2020-10-15 02:59:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:59:57,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-15 02:59:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:57,984 INFO L225 Difference]: With dead ends: 63090 [2020-10-15 02:59:57,984 INFO L226 Difference]: Without dead ends: 35654 [2020-10-15 02:59:58,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:59:58,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35654 states. [2020-10-15 03:00:01,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35654 to 35652. [2020-10-15 03:00:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35652 states. [2020-10-15 03:00:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35652 states to 35652 states and 47682 transitions. [2020-10-15 03:00:01,351 INFO L78 Accepts]: Start accepts. Automaton has 35652 states and 47682 transitions. Word has length 171 [2020-10-15 03:00:01,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:01,351 INFO L479 AbstractCegarLoop]: Abstraction has 35652 states and 47682 transitions. [2020-10-15 03:00:01,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:00:01,351 INFO L276 IsEmpty]: Start isEmpty. Operand 35652 states and 47682 transitions. [2020-10-15 03:00:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-15 03:00:01,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:01,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:01,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:00:01,369 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:01,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1876796122, now seen corresponding path program 1 times [2020-10-15 03:00:01,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:01,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859408379] [2020-10-15 03:00:01,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:01,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:03,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:03,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-15 03:00:03,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:00:03,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-15 03:00:03,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:03,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:03,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:00:03,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:00:03,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 03:00:03,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:00:03,537 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:00:03,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:03,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:03,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:03,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:03,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:00:03,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:03,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:00:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:00:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:00:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:03,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859408379] [2020-10-15 03:00:03,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:03,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:00:03,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424471307] [2020-10-15 03:00:03,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:00:03,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:03,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:00:03,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:00:03,578 INFO L87 Difference]: Start difference. First operand 35652 states and 47682 transitions. Second operand 5 states. [2020-10-15 03:00:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:07,834 INFO L93 Difference]: Finished difference Result 64590 states and 86318 transitions. [2020-10-15 03:00:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:00:07,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-15 03:00:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:07,869 INFO L225 Difference]: With dead ends: 64590 [2020-10-15 03:00:07,870 INFO L226 Difference]: Without dead ends: 29185 [2020-10-15 03:00:07,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:00:07,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29185 states. [2020-10-15 03:00:10,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29185 to 29185. [2020-10-15 03:00:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29185 states. [2020-10-15 03:00:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29185 states to 29185 states and 38912 transitions. [2020-10-15 03:00:10,708 INFO L78 Accepts]: Start accepts. Automaton has 29185 states and 38912 transitions. Word has length 172 [2020-10-15 03:00:10,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:10,708 INFO L479 AbstractCegarLoop]: Abstraction has 29185 states and 38912 transitions. [2020-10-15 03:00:10,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:00:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand 29185 states and 38912 transitions. [2020-10-15 03:00:10,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-15 03:00:10,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:10,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:00:10,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:00:10,721 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2012736163, now seen corresponding path program 1 times [2020-10-15 03:00:10,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:10,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524579953] [2020-10-15 03:00:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking...