/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_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:33:30,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:33:30,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:33:30,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:33:30,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:33:30,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:33:30,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:33:30,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:33:30,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:33:30,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:33:30,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:33:30,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:33:30,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:33:30,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:33:30,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:33:30,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:33:30,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:33:30,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:33:30,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:33:30,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:33:30,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:33:30,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:33:30,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:33:30,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:33:30,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:33:30,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:33:30,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:33:30,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:33:30,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:33:30,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:33:30,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:33:30,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:33:30,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:33:30,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:33:30,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:33:30,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:33:30,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:33:30,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:33:30,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:33:30,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:33:30,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:33:30,801 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 03:33:30,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:33:30,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:33:30,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:33:30,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:33:30,825 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:33:30,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:33:30,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:33:30,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:33:30,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:33:30,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:33:30,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:33:30,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:33:30,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:33:30,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:33:30,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:33:30,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:33:30,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:33:30,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:33:30,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:33:30,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:33:30,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:33:30,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:33:30,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:33:30,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:33:30,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:33:30,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:33:30,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:33:30,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:33:30,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:33:30,830 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 03:33:31,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:33:31,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:33:31,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:33:31,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:33:31,158 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:33:31,158 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:33:31,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dd1466a5/f4381cce22014cd9b4b1b7286eeb4947/FLAGad2b81007 [2020-10-15 03:33:31,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:33:31,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:33:31,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dd1466a5/f4381cce22014cd9b4b1b7286eeb4947/FLAGad2b81007 [2020-10-15 03:33:32,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dd1466a5/f4381cce22014cd9b4b1b7286eeb4947 [2020-10-15 03:33:32,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:33:32,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:33:32,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:32,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:33:32,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:33:32,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77dd261d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32, skipping insertion in model container [2020-10-15 03:33:32,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:33:32,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:33:32,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:32,452 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:33:32,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:32,670 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:33:32,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32 WrapperNode [2020-10-15 03:33:32,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:32,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:33:32,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:33:32,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:33:32,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (1/1) ... [2020-10-15 03:33:32,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:33:32,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:33:32,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:33:32,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:33:32,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (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 03:33:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:33:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:33:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:33:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:33:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:33:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:33:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:33:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:33:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:33:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:33:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:33:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:33:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:33:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:33:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:33:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:33:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:33:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:33:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:33:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:33:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:33:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:33:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:33:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:33:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:33:33,507 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:33:33,507 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:33:33,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:33 BoogieIcfgContainer [2020-10-15 03:33:33,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:33:33,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:33:33,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:33:33,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:33:33,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:33:32" (1/3) ... [2020-10-15 03:33:33,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:33, skipping insertion in model container [2020-10-15 03:33:33,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:32" (2/3) ... [2020-10-15 03:33:33,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:33, skipping insertion in model container [2020-10-15 03:33:33,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:33" (3/3) ... [2020-10-15 03:33:33,521 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 03:33:33,532 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:33:33,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:33:33,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:33:33,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:33:33,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:33:33,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:33:33,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:33:33,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:33:33,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:33:33,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:33:33,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:33:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2020-10-15 03:33:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 03:33:33,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:33,616 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] [2020-10-15 03:33:33,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:33,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:33,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1044039479, now seen corresponding path program 1 times [2020-10-15 03:33:33,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:33,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373019399] [2020-10-15 03:33:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:39,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:39,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 03:33:39,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:33:39,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:33:39,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:39,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:33:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 03:33:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:33:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:33:39,572 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:33:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:39,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:33:39,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:39,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:39,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:39,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:39,648 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 03:33:39,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373019399] [2020-10-15 03:33:39,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:39,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:33:39,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180998016] [2020-10-15 03:33:39,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:33:39,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:39,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:33:39,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:33:39,686 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 4 states. [2020-10-15 03:33:40,005 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 03:33:40,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:40,939 INFO L93 Difference]: Finished difference Result 307 states and 497 transitions. [2020-10-15 03:33:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:33:40,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-15 03:33:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:40,956 INFO L225 Difference]: With dead ends: 307 [2020-10-15 03:33:40,956 INFO L226 Difference]: Without dead ends: 213 [2020-10-15 03:33:40,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:33:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-15 03:33:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-10-15 03:33:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-15 03:33:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2020-10-15 03:33:41,024 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 91 [2020-10-15 03:33:41,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:41,025 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2020-10-15 03:33:41,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:33:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2020-10-15 03:33:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 03:33:41,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:41,029 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] [2020-10-15 03:33:41,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:33:41,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:41,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1951165745, now seen corresponding path program 1 times [2020-10-15 03:33:41,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:41,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428545237] [2020-10-15 03:33:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:41,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:46,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:46,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 03:33:46,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:33:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:33:46,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:46,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:33:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:33:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:33:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 03:33:46,420 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:33:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:46,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:46,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:46,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:46,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:33:46,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:46,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:46,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:46,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428545237] [2020-10-15 03:33:46,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:46,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:33:46,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926620851] [2020-10-15 03:33:46,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:33:46,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:46,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:33:46,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:33:46,482 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand 10 states. [2020-10-15 03:33:46,797 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-15 03:33:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:47,935 INFO L93 Difference]: Finished difference Result 2367 states and 3732 transitions. [2020-10-15 03:33:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:33:47,935 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-15 03:33:47,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:47,961 INFO L225 Difference]: With dead ends: 2367 [2020-10-15 03:33:47,961 INFO L226 Difference]: Without dead ends: 2213 [2020-10-15 03:33:47,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:33:47,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2020-10-15 03:33:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 363. [2020-10-15 03:33:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-15 03:33:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 542 transitions. [2020-10-15 03:33:48,072 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 542 transitions. Word has length 92 [2020-10-15 03:33:48,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:48,075 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 542 transitions. [2020-10-15 03:33:48,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:33:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 542 transitions. [2020-10-15 03:33:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:33:48,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:48,085 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] [2020-10-15 03:33:48,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:33:48,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:48,085 INFO L82 PathProgramCache]: Analyzing trace with hash 714236142, now seen corresponding path program 1 times [2020-10-15 03:33:48,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:48,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286516989] [2020-10-15 03:33:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:49,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:53,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:33:53,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:33:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:33:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:53,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:33:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:33:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 03:33:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:53,397 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:33:53,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:53,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:53,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:33:53,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:53,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:33:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:33:53,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:33:53,459 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 03:33:53,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286516989] [2020-10-15 03:33:53,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:53,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:33:53,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265626339] [2020-10-15 03:33:53,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:33:53,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:53,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:33:53,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:33:53,464 INFO L87 Difference]: Start difference. First operand 363 states and 542 transitions. Second operand 7 states. [2020-10-15 03:33:53,695 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:33:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:33:54,521 INFO L93 Difference]: Finished difference Result 1060 states and 1640 transitions. [2020-10-15 03:33:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:33:54,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-15 03:33:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:33:54,526 INFO L225 Difference]: With dead ends: 1060 [2020-10-15 03:33:54,527 INFO L226 Difference]: Without dead ends: 754 [2020-10-15 03:33:54,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:33:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2020-10-15 03:33:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 418. [2020-10-15 03:33:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-15 03:33:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 626 transitions. [2020-10-15 03:33:54,568 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 626 transitions. Word has length 94 [2020-10-15 03:33:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:54,568 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 626 transitions. [2020-10-15 03:33:54,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:33:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 626 transitions. [2020-10-15 03:33:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:33:54,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:54,570 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] [2020-10-15 03:33:54,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:33:54,570 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1272102208, now seen corresponding path program 1 times [2020-10-15 03:33:54,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:54,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127598746] [2020-10-15 03:33:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:54,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:59,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:59,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:33:59,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:33:59,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:33:59,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:59,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:33:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:33:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:33:59,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:59,977 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:33:59,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:00,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:00,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:00,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:34:00,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:00,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:00,079 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 03:34:00,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127598746] [2020-10-15 03:34:00,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:00,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:34:00,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064812399] [2020-10-15 03:34:00,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:34:00,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:00,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:34:00,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:34:00,083 INFO L87 Difference]: Start difference. First operand 418 states and 626 transitions. Second operand 7 states. [2020-10-15 03:34:00,409 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 03:34:01,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:01,565 INFO L93 Difference]: Finished difference Result 1066 states and 1644 transitions. [2020-10-15 03:34:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:34:01,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-15 03:34:01,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:01,571 INFO L225 Difference]: With dead ends: 1066 [2020-10-15 03:34:01,572 INFO L226 Difference]: Without dead ends: 760 [2020-10-15 03:34:01,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:34:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-10-15 03:34:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 474. [2020-10-15 03:34:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-10-15 03:34:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 712 transitions. [2020-10-15 03:34:01,621 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 712 transitions. Word has length 94 [2020-10-15 03:34:01,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:01,622 INFO L479 AbstractCegarLoop]: Abstraction has 474 states and 712 transitions. [2020-10-15 03:34:01,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:34:01,623 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 712 transitions. [2020-10-15 03:34:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:34:01,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:01,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:01,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:34:01,627 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:01,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:01,627 INFO L82 PathProgramCache]: Analyzing trace with hash 937238570, now seen corresponding path program 1 times [2020-10-15 03:34:01,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:01,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616744463] [2020-10-15 03:34:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:01,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:01,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:34:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:34:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:34:06,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:06,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:34:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:34:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:06,902 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:06,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:06,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:06,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:06,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:06,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:06,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:34:06,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:06,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:06,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:06,964 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 03:34:06,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616744463] [2020-10-15 03:34:06,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:06,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:34:06,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719398419] [2020-10-15 03:34:06,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:34:06,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:06,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:34:06,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:34:06,972 INFO L87 Difference]: Start difference. First operand 474 states and 712 transitions. Second operand 4 states. [2020-10-15 03:34:07,239 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 03:34:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:07,786 INFO L93 Difference]: Finished difference Result 1251 states and 1930 transitions. [2020-10-15 03:34:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:34:07,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-15 03:34:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:07,792 INFO L225 Difference]: With dead ends: 1251 [2020-10-15 03:34:07,792 INFO L226 Difference]: Without dead ends: 841 [2020-10-15 03:34:07,793 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 03:34:07,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-10-15 03:34:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 835. [2020-10-15 03:34:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-15 03:34:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1270 transitions. [2020-10-15 03:34:07,873 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1270 transitions. Word has length 94 [2020-10-15 03:34:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:07,874 INFO L479 AbstractCegarLoop]: Abstraction has 835 states and 1270 transitions. [2020-10-15 03:34:07,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:34:07,874 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1270 transitions. [2020-10-15 03:34:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:34:07,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:07,875 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] [2020-10-15 03:34:07,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:34:07,876 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash 957287913, now seen corresponding path program 1 times [2020-10-15 03:34:07,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:07,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219728887] [2020-10-15 03:34:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:12,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:12,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:34:12,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:34:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:34:12,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:12,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:34:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:34:12,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 03:34:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:13,253 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:13,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:34:13,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:13,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:13,309 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 03:34:13,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219728887] [2020-10-15 03:34:13,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:13,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:34:13,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945849022] [2020-10-15 03:34:13,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:34:13,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:34:13,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:34:13,311 INFO L87 Difference]: Start difference. First operand 835 states and 1270 transitions. Second operand 10 states. [2020-10-15 03:34:13,663 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 03:34:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:15,013 INFO L93 Difference]: Finished difference Result 4729 states and 7368 transitions. [2020-10-15 03:34:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:34:15,013 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-15 03:34:15,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:15,033 INFO L225 Difference]: With dead ends: 4729 [2020-10-15 03:34:15,034 INFO L226 Difference]: Without dead ends: 4145 [2020-10-15 03:34:15,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:34:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2020-10-15 03:34:15,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 835. [2020-10-15 03:34:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-15 03:34:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1266 transitions. [2020-10-15 03:34:15,185 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1266 transitions. Word has length 94 [2020-10-15 03:34:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:15,186 INFO L479 AbstractCegarLoop]: Abstraction has 835 states and 1266 transitions. [2020-10-15 03:34:15,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:34:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1266 transitions. [2020-10-15 03:34:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:34:15,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:15,187 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] [2020-10-15 03:34:15,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:34:15,188 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:15,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:15,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1295847430, now seen corresponding path program 1 times [2020-10-15 03:34:15,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:15,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686496327] [2020-10-15 03:34:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:15,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:15,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:18,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:20,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:20,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:34:20,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:34:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:34:20,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:20,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:34:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 03:34:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:20,473 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:20,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:20,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:20,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:34:20,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:20,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:20,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:20,529 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 03:34:20,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686496327] [2020-10-15 03:34:20,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:20,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:34:20,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989992854] [2020-10-15 03:34:20,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:34:20,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:20,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:34:20,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:34:20,532 INFO L87 Difference]: Start difference. First operand 835 states and 1266 transitions. Second operand 7 states. [2020-10-15 03:34:20,768 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-15 03:34:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:21,683 INFO L93 Difference]: Finished difference Result 1975 states and 3040 transitions. [2020-10-15 03:34:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:34:21,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-15 03:34:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:21,690 INFO L225 Difference]: With dead ends: 1975 [2020-10-15 03:34:21,690 INFO L226 Difference]: Without dead ends: 1383 [2020-10-15 03:34:21,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:34:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2020-10-15 03:34:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 835. [2020-10-15 03:34:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-15 03:34:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1262 transitions. [2020-10-15 03:34:21,790 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1262 transitions. Word has length 94 [2020-10-15 03:34:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:21,791 INFO L479 AbstractCegarLoop]: Abstraction has 835 states and 1262 transitions. [2020-10-15 03:34:21,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:34:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1262 transitions. [2020-10-15 03:34:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:34:21,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:21,792 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] [2020-10-15 03:34:21,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:34:21,793 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:21,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1668373324, now seen corresponding path program 1 times [2020-10-15 03:34:21,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:21,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709507407] [2020-10-15 03:34:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:21,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:22,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:22,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:22,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:25,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:26,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:26,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:34:26,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:34:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:34:26,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:26,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:34:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:34:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:27,098 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:27,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:27,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:34:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:27,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:27,161 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 03:34:27,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709507407] [2020-10-15 03:34:27,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:27,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:34:27,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744355920] [2020-10-15 03:34:27,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:34:27,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:27,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:34:27,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:34:27,163 INFO L87 Difference]: Start difference. First operand 835 states and 1262 transitions. Second operand 7 states. [2020-10-15 03:34:27,382 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 03:34:28,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:28,291 INFO L93 Difference]: Finished difference Result 2163 states and 3320 transitions. [2020-10-15 03:34:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:34:28,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-15 03:34:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:28,298 INFO L225 Difference]: With dead ends: 2163 [2020-10-15 03:34:28,298 INFO L226 Difference]: Without dead ends: 1515 [2020-10-15 03:34:28,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:34:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-10-15 03:34:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 827. [2020-10-15 03:34:28,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-10-15 03:34:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1242 transitions. [2020-10-15 03:34:28,407 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1242 transitions. Word has length 94 [2020-10-15 03:34:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:28,407 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 1242 transitions. [2020-10-15 03:34:28,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:34:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1242 transitions. [2020-10-15 03:34:28,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 03:34:28,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:28,409 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] [2020-10-15 03:34:28,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:34:28,409 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:28,410 INFO L82 PathProgramCache]: Analyzing trace with hash -974117720, now seen corresponding path program 1 times [2020-10-15 03:34:28,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:28,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418339402] [2020-10-15 03:34:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:28,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:28,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:33,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:33,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 03:34:33,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:34:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:34:33,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:33,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:34:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:34:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:33,646 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:33,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:33,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:33,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:33,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:34:33,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:33,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:33,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:33,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:33,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:33,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:33,689 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 03:34:33,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418339402] [2020-10-15 03:34:33,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:33,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:34:33,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014247431] [2020-10-15 03:34:33,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:34:33,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:33,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:34:33,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:34:33,691 INFO L87 Difference]: Start difference. First operand 827 states and 1242 transitions. Second operand 7 states. [2020-10-15 03:34:33,905 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-15 03:34:34,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:34,789 INFO L93 Difference]: Finished difference Result 2355 states and 3614 transitions. [2020-10-15 03:34:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:34:34,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-15 03:34:34,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:34,797 INFO L225 Difference]: With dead ends: 2355 [2020-10-15 03:34:34,797 INFO L226 Difference]: Without dead ends: 1643 [2020-10-15 03:34:34,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:34:34,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2020-10-15 03:34:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 795. [2020-10-15 03:34:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-15 03:34:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1190 transitions. [2020-10-15 03:34:34,917 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1190 transitions. Word has length 94 [2020-10-15 03:34:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:34,917 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1190 transitions. [2020-10-15 03:34:34,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:34:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1190 transitions. [2020-10-15 03:34:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 03:34:34,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:34,919 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] [2020-10-15 03:34:34,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:34:34,919 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:34,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1109550004, now seen corresponding path program 1 times [2020-10-15 03:34:34,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:34,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713393853] [2020-10-15 03:34:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:39,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:39,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 03:34:39,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:34:39,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4534 [2020-10-15 03:34:39,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:39,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:34:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:34:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 03:34:39,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:39,694 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:39,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:39,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:39,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:39,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:34:39,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:39,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:39,738 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 03:34:39,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713393853] [2020-10-15 03:34:39,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:39,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:39,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330989011] [2020-10-15 03:34:39,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:34:39,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:39,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:34:39,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:34:39,740 INFO L87 Difference]: Start difference. First operand 795 states and 1190 transitions. Second operand 5 states. [2020-10-15 03:34:39,969 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:34:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:40,816 INFO L93 Difference]: Finished difference Result 1407 states and 2151 transitions. [2020-10-15 03:34:40,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:34:40,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-15 03:34:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:40,821 INFO L225 Difference]: With dead ends: 1407 [2020-10-15 03:34:40,821 INFO L226 Difference]: Without dead ends: 1101 [2020-10-15 03:34:40,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:34:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-10-15 03:34:40,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1093. [2020-10-15 03:34:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-10-15 03:34:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1652 transitions. [2020-10-15 03:34:40,972 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1652 transitions. Word has length 95 [2020-10-15 03:34:40,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:40,973 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1652 transitions. [2020-10-15 03:34:40,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:34:40,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1652 transitions. [2020-10-15 03:34:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 03:34:40,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:40,974 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] [2020-10-15 03:34:40,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:34:40,975 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:40,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1394399788, now seen corresponding path program 1 times [2020-10-15 03:34:40,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:40,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447348998] [2020-10-15 03:34:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:41,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:45,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:45,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 03:34:45,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:34:45,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:34:45,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:45,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:34:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:45,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:34:45,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:46,264 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:46,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:46,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:46,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:46,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:34:46,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:46,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:46,304 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 03:34:46,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447348998] [2020-10-15 03:34:46,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:46,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:34:46,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287788076] [2020-10-15 03:34:46,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:34:46,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:46,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:34:46,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:34:46,306 INFO L87 Difference]: Start difference. First operand 1093 states and 1652 transitions. Second operand 7 states. [2020-10-15 03:34:46,507 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 03:34:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:47,416 INFO L93 Difference]: Finished difference Result 2711 states and 4174 transitions. [2020-10-15 03:34:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:34:47,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-15 03:34:47,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:47,423 INFO L225 Difference]: With dead ends: 2711 [2020-10-15 03:34:47,424 INFO L226 Difference]: Without dead ends: 2029 [2020-10-15 03:34:47,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:34:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2020-10-15 03:34:47,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1043. [2020-10-15 03:34:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-10-15 03:34:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1579 transitions. [2020-10-15 03:34:47,549 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1579 transitions. Word has length 95 [2020-10-15 03:34:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:47,550 INFO L479 AbstractCegarLoop]: Abstraction has 1043 states and 1579 transitions. [2020-10-15 03:34:47,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:34:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1579 transitions. [2020-10-15 03:34:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 03:34:47,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:47,551 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] [2020-10-15 03:34:47,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:34:47,552 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:47,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:47,552 INFO L82 PathProgramCache]: Analyzing trace with hash -390755032, now seen corresponding path program 1 times [2020-10-15 03:34:47,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:47,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396555145] [2020-10-15 03:34:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:47,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:52,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:52,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 03:34:52,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:34:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:34:52,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:52,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 03:34:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:34:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:52,756 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:52,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:52,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:52,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:52,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:52,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:34:52,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:52,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:34:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:52,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:34:52,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:52,787 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 03:34:52,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396555145] [2020-10-15 03:34:52,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:52,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:34:52,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013709531] [2020-10-15 03:34:52,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:34:52,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:34:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:34:52,789 INFO L87 Difference]: Start difference. First operand 1043 states and 1579 transitions. Second operand 4 states. [2020-10-15 03:34:52,994 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 03:34:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:34:53,769 INFO L93 Difference]: Finished difference Result 2753 states and 4233 transitions. [2020-10-15 03:34:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:34:53,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-15 03:34:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:34:53,777 INFO L225 Difference]: With dead ends: 2753 [2020-10-15 03:34:53,777 INFO L226 Difference]: Without dead ends: 1821 [2020-10-15 03:34:53,779 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 03:34:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2020-10-15 03:34:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1819. [2020-10-15 03:34:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1819 states. [2020-10-15 03:34:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2771 transitions. [2020-10-15 03:34:54,013 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2771 transitions. Word has length 95 [2020-10-15 03:34:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:34:54,013 INFO L479 AbstractCegarLoop]: Abstraction has 1819 states and 2771 transitions. [2020-10-15 03:34:54,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:34:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2771 transitions. [2020-10-15 03:34:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 03:34:54,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:54,015 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] [2020-10-15 03:34:54,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:34:54,015 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:54,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1325077849, now seen corresponding path program 1 times [2020-10-15 03:34:54,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:54,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640910842] [2020-10-15 03:34:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:54,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:58,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:59,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 03:34:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:34:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:34:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:59,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:34:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:34:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:34:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:59,278 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:34:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:59,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:59,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:59,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:34:59,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:59,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:59,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:34:59,312 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 03:34:59,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640910842] [2020-10-15 03:34:59,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:59,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:59,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287642660] [2020-10-15 03:34:59,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:59,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:59,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:59,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:59,314 INFO L87 Difference]: Start difference. First operand 1819 states and 2771 transitions. Second operand 6 states. [2020-10-15 03:34:59,540 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:35:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:00,407 INFO L93 Difference]: Finished difference Result 4640 states and 7135 transitions. [2020-10-15 03:35:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:00,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-15 03:35:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:00,417 INFO L225 Difference]: With dead ends: 4640 [2020-10-15 03:35:00,417 INFO L226 Difference]: Without dead ends: 2929 [2020-10-15 03:35:00,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:35:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-10-15 03:35:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2927. [2020-10-15 03:35:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2020-10-15 03:35:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4466 transitions. [2020-10-15 03:35:00,831 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4466 transitions. Word has length 96 [2020-10-15 03:35:00,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:00,831 INFO L479 AbstractCegarLoop]: Abstraction has 2927 states and 4466 transitions. [2020-10-15 03:35:00,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:00,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4466 transitions. [2020-10-15 03:35:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 03:35:00,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:00,832 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] [2020-10-15 03:35:00,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:35:00,832 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:00,833 INFO L82 PathProgramCache]: Analyzing trace with hash 525566434, now seen corresponding path program 1 times [2020-10-15 03:35:00,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:00,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288128959] [2020-10-15 03:35:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:04,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:04,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 03:35:04,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:35:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3325 [2020-10-15 03:35:04,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:04,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:35:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:04,384 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:35:04,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:04,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:04,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:04,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:35:04,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:04,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:04,417 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 03:35:04,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288128959] [2020-10-15 03:35:04,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:04,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:04,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117302338] [2020-10-15 03:35:04,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:04,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:04,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:04,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:04,418 INFO L87 Difference]: Start difference. First operand 2927 states and 4466 transitions. Second operand 6 states. [2020-10-15 03:35:04,634 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:35:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:05,433 INFO L93 Difference]: Finished difference Result 5747 states and 8807 transitions. [2020-10-15 03:35:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:05,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-15 03:35:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:05,448 INFO L225 Difference]: With dead ends: 5747 [2020-10-15 03:35:05,448 INFO L226 Difference]: Without dead ends: 2927 [2020-10-15 03:35:05,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:35:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-10-15 03:35:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2927. [2020-10-15 03:35:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2927 states. [2020-10-15 03:35:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4444 transitions. [2020-10-15 03:35:05,797 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4444 transitions. Word has length 96 [2020-10-15 03:35:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:05,798 INFO L479 AbstractCegarLoop]: Abstraction has 2927 states and 4444 transitions. [2020-10-15 03:35:05,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4444 transitions. [2020-10-15 03:35:05,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 03:35:05,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:05,799 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] [2020-10-15 03:35:05,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:35:05,799 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:05,800 INFO L82 PathProgramCache]: Analyzing trace with hash -938505123, now seen corresponding path program 1 times [2020-10-15 03:35:05,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:05,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879280536] [2020-10-15 03:35:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:06,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:06,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 03:35:06,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:35:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-15 03:35:06,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:06,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 03:35:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:35:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:06,922 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:35:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:06,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:06,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:06,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:06,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:06,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:35:06,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:06,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:06,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:06,948 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 03:35:06,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879280536] [2020-10-15 03:35:06,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:06,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:35:06,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123142945] [2020-10-15 03:35:06,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:35:06,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:06,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:35:06,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:35:06,949 INFO L87 Difference]: Start difference. First operand 2927 states and 4444 transitions. Second operand 4 states. [2020-10-15 03:35:07,158 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 03:35:08,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:08,319 INFO L93 Difference]: Finished difference Result 8181 states and 12476 transitions. [2020-10-15 03:35:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:35:08,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-15 03:35:08,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:08,332 INFO L225 Difference]: With dead ends: 8181 [2020-10-15 03:35:08,332 INFO L226 Difference]: Without dead ends: 5377 [2020-10-15 03:35:08,338 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 03:35:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2020-10-15 03:35:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 5375. [2020-10-15 03:35:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5375 states. [2020-10-15 03:35:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5375 states to 5375 states and 8134 transitions. [2020-10-15 03:35:08,983 INFO L78 Accepts]: Start accepts. Automaton has 5375 states and 8134 transitions. Word has length 96 [2020-10-15 03:35:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:08,983 INFO L479 AbstractCegarLoop]: Abstraction has 5375 states and 8134 transitions. [2020-10-15 03:35:08,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:35:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5375 states and 8134 transitions. [2020-10-15 03:35:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 03:35:08,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:08,984 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] [2020-10-15 03:35:08,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:35:08,985 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1606497393, now seen corresponding path program 1 times [2020-10-15 03:35:08,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:08,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906545171] [2020-10-15 03:35:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:09,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:09,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:09,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:10,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 03:35:10,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:35:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1582 [2020-10-15 03:35:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:10,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 03:35:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:10,859 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:35:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:10,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:10,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:10,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:35:10,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:10,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:10,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:10,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:10,889 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 03:35:10,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906545171] [2020-10-15 03:35:10,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:10,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:10,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174785897] [2020-10-15 03:35:10,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:10,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:10,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:10,891 INFO L87 Difference]: Start difference. First operand 5375 states and 8134 transitions. Second operand 6 states. [2020-10-15 03:35:11,098 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-15 03:35:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:12,784 INFO L93 Difference]: Finished difference Result 15817 states and 24002 transitions. [2020-10-15 03:35:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:12,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-15 03:35:12,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:12,807 INFO L225 Difference]: With dead ends: 15817 [2020-10-15 03:35:12,808 INFO L226 Difference]: Without dead ends: 10561 [2020-10-15 03:35:12,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:35:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10561 states. [2020-10-15 03:35:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10561 to 10559. [2020-10-15 03:35:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10559 states. [2020-10-15 03:35:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10559 states to 10559 states and 15964 transitions. [2020-10-15 03:35:14,198 INFO L78 Accepts]: Start accepts. Automaton has 10559 states and 15964 transitions. Word has length 97 [2020-10-15 03:35:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:14,199 INFO L479 AbstractCegarLoop]: Abstraction has 10559 states and 15964 transitions. [2020-10-15 03:35:14,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 10559 states and 15964 transitions. [2020-10-15 03:35:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 03:35:14,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:14,200 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] [2020-10-15 03:35:14,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:35:14,200 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:14,200 INFO L82 PathProgramCache]: Analyzing trace with hash -301747092, now seen corresponding path program 1 times [2020-10-15 03:35:14,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:14,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953679693] [2020-10-15 03:35:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:14,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 03:35:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:35:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-15 03:35:14,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:14,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 03:35:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:35:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:14,941 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:35:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:14,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:35:14,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:14,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:14,965 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 03:35:14,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953679693] [2020-10-15 03:35:14,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:14,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:35:14,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321305576] [2020-10-15 03:35:14,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:35:14,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:35:14,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:35:14,967 INFO L87 Difference]: Start difference. First operand 10559 states and 15964 transitions. Second operand 4 states. [2020-10-15 03:35:15,162 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 03:35:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:18,080 INFO L93 Difference]: Finished difference Result 30099 states and 45454 transitions. [2020-10-15 03:35:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:35:18,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-15 03:35:18,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:18,124 INFO L225 Difference]: With dead ends: 30099 [2020-10-15 03:35:18,124 INFO L226 Difference]: Without dead ends: 19687 [2020-10-15 03:35:18,142 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 03:35:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19687 states. [2020-10-15 03:35:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19687 to 19671. [2020-10-15 03:35:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19671 states. [2020-10-15 03:35:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19671 states to 19671 states and 29486 transitions. [2020-10-15 03:35:21,345 INFO L78 Accepts]: Start accepts. Automaton has 19671 states and 29486 transitions. Word has length 97 [2020-10-15 03:35:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:21,345 INFO L479 AbstractCegarLoop]: Abstraction has 19671 states and 29486 transitions. [2020-10-15 03:35:21,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:35:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 19671 states and 29486 transitions. [2020-10-15 03:35:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 03:35:21,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:21,346 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] [2020-10-15 03:35:21,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:35:21,346 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:21,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1983220055, now seen corresponding path program 1 times [2020-10-15 03:35:21,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:21,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372797516] [2020-10-15 03:35:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:21,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 03:35:21,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:35:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-15 03:35:21,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:21,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 03:35:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:35:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:21,848 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:35:21,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:21,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:21,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:35:21,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:21,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:21,874 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 03:35:21,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372797516] [2020-10-15 03:35:21,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:21,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:35:21,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875262285] [2020-10-15 03:35:21,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:35:21,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:35:21,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:35:21,876 INFO L87 Difference]: Start difference. First operand 19671 states and 29486 transitions. Second operand 4 states. [2020-10-15 03:35:22,080 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 03:35:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:26,859 INFO L93 Difference]: Finished difference Result 56187 states and 83984 transitions. [2020-10-15 03:35:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:35:26,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-15 03:35:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:26,912 INFO L225 Difference]: With dead ends: 56187 [2020-10-15 03:35:26,912 INFO L226 Difference]: Without dead ends: 36643 [2020-10-15 03:35:26,945 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 03:35:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36643 states. [2020-10-15 03:35:31,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36643 to 36603. [2020-10-15 03:35:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36603 states. [2020-10-15 03:35:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36603 states to 36603 states and 54276 transitions. [2020-10-15 03:35:31,646 INFO L78 Accepts]: Start accepts. Automaton has 36603 states and 54276 transitions. Word has length 98 [2020-10-15 03:35:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:31,647 INFO L479 AbstractCegarLoop]: Abstraction has 36603 states and 54276 transitions. [2020-10-15 03:35:31,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:35:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 36603 states and 54276 transitions. [2020-10-15 03:35:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:35:31,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:31,647 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] [2020-10-15 03:35:31,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:35:31,648 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:31,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:31,648 INFO L82 PathProgramCache]: Analyzing trace with hash -969936946, now seen corresponding path program 1 times [2020-10-15 03:35:31,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:31,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293100097] [2020-10-15 03:35:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:32,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:32,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:35:32,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:35:32,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-15 03:35:32,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:32,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 03:35:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:32,382 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:35:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:35:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:32,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:32,416 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 03:35:32,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293100097] [2020-10-15 03:35:32,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:32,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:32,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206424070] [2020-10-15 03:35:32,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:32,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:32,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:32,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:32,418 INFO L87 Difference]: Start difference. First operand 36603 states and 54276 transitions. Second operand 6 states. [2020-10-15 03:35:32,632 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:35:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:38,492 INFO L93 Difference]: Finished difference Result 73117 states and 108453 transitions. [2020-10-15 03:35:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:38,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-15 03:35:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:38,539 INFO L225 Difference]: With dead ends: 73117 [2020-10-15 03:35:38,540 INFO L226 Difference]: Without dead ends: 36603 [2020-10-15 03:35:38,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:35:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36603 states. [2020-10-15 03:35:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36603 to 36603. [2020-10-15 03:35:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36603 states. [2020-10-15 03:35:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36603 states to 36603 states and 53956 transitions. [2020-10-15 03:35:43,138 INFO L78 Accepts]: Start accepts. Automaton has 36603 states and 53956 transitions. Word has length 99 [2020-10-15 03:35:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:43,138 INFO L479 AbstractCegarLoop]: Abstraction has 36603 states and 53956 transitions. [2020-10-15 03:35:43,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36603 states and 53956 transitions. [2020-10-15 03:35:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:35:43,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:43,139 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] [2020-10-15 03:35:43,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:35:43,139 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:43,140 INFO L82 PathProgramCache]: Analyzing trace with hash -104404557, now seen corresponding path program 1 times [2020-10-15 03:35:43,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:43,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926191875] [2020-10-15 03:35:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:43,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:35:43,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:35:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-15 03:35:43,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:43,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 03:35:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:35:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:43,527 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:35:43,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:43,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:43,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:35:43,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:43,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:43,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:43,552 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 03:35:43,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926191875] [2020-10-15 03:35:43,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:43,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:35:43,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913880065] [2020-10-15 03:35:43,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:35:43,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:35:43,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:35:43,554 INFO L87 Difference]: Start difference. First operand 36603 states and 53956 transitions. Second operand 4 states. [2020-10-15 03:35:43,757 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 03:35:53,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:53,235 INFO L93 Difference]: Finished difference Result 104511 states and 153350 transitions. [2020-10-15 03:35:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:35:53,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-15 03:35:53,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:53,301 INFO L225 Difference]: With dead ends: 104511 [2020-10-15 03:35:53,302 INFO L226 Difference]: Without dead ends: 67991 [2020-10-15 03:35:53,334 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 03:35:53,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67991 states. [2020-10-15 03:36:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67991 to 67968. [2020-10-15 03:36:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67968 states. [2020-10-15 03:36:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67968 states to 67968 states and 98816 transitions. [2020-10-15 03:36:03,094 INFO L78 Accepts]: Start accepts. Automaton has 67968 states and 98816 transitions. Word has length 99 [2020-10-15 03:36:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:03,094 INFO L479 AbstractCegarLoop]: Abstraction has 67968 states and 98816 transitions. [2020-10-15 03:36:03,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:36:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 67968 states and 98816 transitions. [2020-10-15 03:36:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:36:03,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:03,095 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] [2020-10-15 03:36:03,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:36:03,096 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:03,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1955160093, now seen corresponding path program 1 times [2020-10-15 03:36:03,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:03,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496992579] [2020-10-15 03:36:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:03,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:36:03,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:36:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-15 03:36:03,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:03,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:03,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 03:36:03,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:03,614 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:36:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:03,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:36:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:03,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:03,647 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 03:36:03,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496992579] [2020-10-15 03:36:03,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:03,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:03,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676865939] [2020-10-15 03:36:03,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:03,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:03,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:03,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:03,649 INFO L87 Difference]: Start difference. First operand 67968 states and 98816 transitions. Second operand 6 states. [2020-10-15 03:36:03,858 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:21,662 INFO L93 Difference]: Finished difference Result 203140 states and 295042 transitions. [2020-10-15 03:36:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:21,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-15 03:36:21,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:21,803 INFO L225 Difference]: With dead ends: 203140 [2020-10-15 03:36:21,803 INFO L226 Difference]: Without dead ends: 135234 [2020-10-15 03:36:21,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135234 states. [2020-10-15 03:36:41,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135234 to 135232. [2020-10-15 03:36:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135232 states. [2020-10-15 03:36:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135232 states to 135232 states and 195648 transitions. [2020-10-15 03:36:41,562 INFO L78 Accepts]: Start accepts. Automaton has 135232 states and 195648 transitions. Word has length 100 [2020-10-15 03:36:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:41,562 INFO L479 AbstractCegarLoop]: Abstraction has 135232 states and 195648 transitions. [2020-10-15 03:36:41,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 135232 states and 195648 transitions. [2020-10-15 03:36:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:36:41,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:41,563 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] [2020-10-15 03:36:41,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:36:41,563 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:41,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:41,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1971535976, now seen corresponding path program 1 times [2020-10-15 03:36:41,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:41,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456406954] [2020-10-15 03:36:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:41,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:41,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:36:41,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-15 03:36:41,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:41,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:36:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-15 03:36:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:36:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:41,897 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:36:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:41,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:41,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:36:41,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:41,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:41,918 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 03:36:41,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456406954] [2020-10-15 03:36:41,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:41,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:41,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413084790] [2020-10-15 03:36:41,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:36:41,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:36:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:36:41,919 INFO L87 Difference]: Start difference. First operand 135232 states and 195648 transitions. Second operand 5 states. [2020-10-15 03:37:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:13,583 INFO L93 Difference]: Finished difference Result 221591 states and 320695 transitions. [2020-10-15 03:37:13,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:37:13,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-15 03:37:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:13,834 INFO L225 Difference]: With dead ends: 221591 [2020-10-15 03:37:13,835 INFO L226 Difference]: Without dead ends: 221589 [2020-10-15 03:37:13,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 03:37:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221589 states.