/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:59:33,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:59:33,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:59:33,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:59:33,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:59:33,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:59:33,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:59:33,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:59:33,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:59:33,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:59:33,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:59:33,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:59:33,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:59:33,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:59:33,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:59:33,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:59:33,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:59:33,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:59:33,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:59:33,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:59:33,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:59:33,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:59:33,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:59:33,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:59:33,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:59:33,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:59:33,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:59:33,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:59:33,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:59:33,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:59:33,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:59:33,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:59:33,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:59:33,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:59:33,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:59:33,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:59:33,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:59:33,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:59:33,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:59:33,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:59:33,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:59:33,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:59:33,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:59:33,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:59:33,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:59:33,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:59:33,917 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:59:33,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:59:33,918 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:59:33,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:59:33,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:59:33,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:59:33,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:59:33,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:59:33,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:59:33,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:59:33,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:59:33,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:59:33,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:59:33,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:59:33,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:59:33,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:59:33,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:59:33,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:59:33,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:59:33,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:59:33,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:59:33,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:59:33,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:59:33,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:59:33,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:59:33,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:59:34,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:59:34,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:59:34,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:59:34,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:59:34,279 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:59:34,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:59:34,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76c9366f2/6f86dd157d374a10aa4ac26686a5b7f5/FLAGeffec06ee [2020-10-13 14:59:34,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:59:34,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:59:34,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76c9366f2/6f86dd157d374a10aa4ac26686a5b7f5/FLAGeffec06ee [2020-10-13 14:59:35,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76c9366f2/6f86dd157d374a10aa4ac26686a5b7f5 [2020-10-13 14:59:35,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:59:35,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:59:35,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:59:35,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:59:35,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:59:35,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:59:35" (1/1) ... [2020-10-13 14:59:35,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425c36b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:35, skipping insertion in model container [2020-10-13 14:59:35,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:59:35" (1/1) ... [2020-10-13 14:59:35,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:59:35,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:59:35,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:59:35,985 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:59:36,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:59:36,558 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:59:36,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36 WrapperNode [2020-10-13 14:59:36,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:59:36,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:59:36,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:59:36,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:59:36,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (1/1) ... [2020-10-13 14:59:36,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (1/1) ... [2020-10-13 14:59:36,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (1/1) ... [2020-10-13 14:59:36,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (1/1) ... [2020-10-13 14:59:36,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (1/1) ... [2020-10-13 14:59:36,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (1/1) ... [2020-10-13 14:59:36,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (1/1) ... [2020-10-13 14:59:36,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:59:36,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:59:36,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:59:36,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:59:36,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:59:36,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:59:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:59:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:59:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:59:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:59:36,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:59:36,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:59:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:59:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:59:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:59:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:59:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:59:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:59:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:59:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:59:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:59:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:59:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:59:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:59:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:59:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:59:38,332 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:59:38,333 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:59:38,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:59:38 BoogieIcfgContainer [2020-10-13 14:59:38,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:59:38,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:59:38,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:59:38,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:59:38,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:59:35" (1/3) ... [2020-10-13 14:59:38,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53859c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:59:38, skipping insertion in model container [2020-10-13 14:59:38,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:59:36" (2/3) ... [2020-10-13 14:59:38,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53859c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:59:38, skipping insertion in model container [2020-10-13 14:59:38,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:59:38" (3/3) ... [2020-10-13 14:59:38,350 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:59:38,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:59:38,369 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-13 14:59:38,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-13 14:59:38,410 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:59:38,410 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:59:38,410 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:59:38,411 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:59:38,411 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:59:38,411 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:59:38,411 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:59:38,411 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:59:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2020-10-13 14:59:38,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 14:59:38,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:38,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:38,485 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:38,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:38,491 INFO L82 PathProgramCache]: Analyzing trace with hash -348588451, now seen corresponding path program 1 times [2020-10-13 14:59:38,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:38,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229291699] [2020-10-13 14:59:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:39,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:40,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:44,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:44,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 14:59:44,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:59:44,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 14:59:44,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:59:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:59:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:59:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:59:44,642 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:59:44,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:44,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:44,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:44,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:44,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:59:44,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:44,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:44,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:44,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:44,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:59:44,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229291699] [2020-10-13 14:59:44,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:44,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:59:44,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466868000] [2020-10-13 14:59:44,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:59:44,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:44,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:59:44,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:59:44,772 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 5 states. [2020-10-13 14:59:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:49,706 INFO L93 Difference]: Finished difference Result 1195 states and 2129 transitions. [2020-10-13 14:59:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:59:49,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-13 14:59:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:49,748 INFO L225 Difference]: With dead ends: 1195 [2020-10-13 14:59:49,748 INFO L226 Difference]: Without dead ends: 800 [2020-10-13 14:59:49,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:59:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2020-10-13 14:59:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 773. [2020-10-13 14:59:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-10-13 14:59:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1104 transitions. [2020-10-13 14:59:49,936 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1104 transitions. Word has length 151 [2020-10-13 14:59:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:49,936 INFO L479 AbstractCegarLoop]: Abstraction has 773 states and 1104 transitions. [2020-10-13 14:59:49,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:59:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1104 transitions. [2020-10-13 14:59:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 14:59:49,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:49,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:49,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:59:49,954 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash 774681625, now seen corresponding path program 1 times [2020-10-13 14:59:49,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:49,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600683872] [2020-10-13 14:59:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:50,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:50,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:55,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:55,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 14:59:55,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:59:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:59:55,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:59:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:59:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:59:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:55,263 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 14:59:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:59:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:55,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:59:55,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:59:55,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:59:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 14:59:55,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:59:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:59:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:59:55,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:59:55,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:59:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:59:55,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600683872] [2020-10-13 14:59:55,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:59:55,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:59:55,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831152845] [2020-10-13 14:59:55,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:59:55,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:59:55,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:59:55,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:55,374 INFO L87 Difference]: Start difference. First operand 773 states and 1104 transitions. Second operand 4 states. [2020-10-13 14:59:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:59:58,144 INFO L93 Difference]: Finished difference Result 2273 states and 3240 transitions. [2020-10-13 14:59:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:59:58,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-13 14:59:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:59:58,156 INFO L225 Difference]: With dead ends: 2273 [2020-10-13 14:59:58,156 INFO L226 Difference]: Without dead ends: 1532 [2020-10-13 14:59:58,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:59:58,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-10-13 14:59:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 775. [2020-10-13 14:59:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-10-13 14:59:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1106 transitions. [2020-10-13 14:59:58,220 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1106 transitions. Word has length 152 [2020-10-13 14:59:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:59:58,220 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 1106 transitions. [2020-10-13 14:59:58,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:59:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1106 transitions. [2020-10-13 14:59:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 14:59:58,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:59:58,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:59:58,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:59:58,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:59:58,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:59:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash -418455556, now seen corresponding path program 1 times [2020-10-13 14:59:58,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:59:58,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048191474] [2020-10-13 14:59:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:59:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:59:58,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:58,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:59:59,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:03,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:03,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 15:00:03,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:00:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:00:03,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 15:00:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:00:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:00:03,765 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:03,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:03,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:03,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:03,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:00:03,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:00:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:03,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048191474] [2020-10-13 15:00:03,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:03,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:03,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175735760] [2020-10-13 15:00:03,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:03,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:03,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:03,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:03,875 INFO L87 Difference]: Start difference. First operand 775 states and 1106 transitions. Second operand 5 states. [2020-10-13 15:00:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:05,923 INFO L93 Difference]: Finished difference Result 1532 states and 2186 transitions. [2020-10-13 15:00:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:05,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 15:00:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:05,929 INFO L225 Difference]: With dead ends: 1532 [2020-10-13 15:00:05,929 INFO L226 Difference]: Without dead ends: 775 [2020-10-13 15:00:05,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-10-13 15:00:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 774. [2020-10-13 15:00:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-10-13 15:00:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1102 transitions. [2020-10-13 15:00:05,984 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1102 transitions. Word has length 153 [2020-10-13 15:00:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:05,988 INFO L479 AbstractCegarLoop]: Abstraction has 774 states and 1102 transitions. [2020-10-13 15:00:05,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1102 transitions. [2020-10-13 15:00:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 15:00:05,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:05,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:05,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:00:05,992 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:05,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2143606293, now seen corresponding path program 1 times [2020-10-13 15:00:05,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:05,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989703235] [2020-10-13 15:00:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:11,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 15:00:11,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:00:11,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:00:11,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 15:00:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:11,502 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:11,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:11,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:11,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:11,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:11,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:00:11,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:11,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:11,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:00:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:11,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989703235] [2020-10-13 15:00:11,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:11,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:11,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890893100] [2020-10-13 15:00:11,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:11,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:11,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:11,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:11,638 INFO L87 Difference]: Start difference. First operand 774 states and 1102 transitions. Second operand 5 states. [2020-10-13 15:00:14,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:14,201 INFO L93 Difference]: Finished difference Result 1900 states and 2690 transitions. [2020-10-13 15:00:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:14,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 15:00:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:14,212 INFO L225 Difference]: With dead ends: 1900 [2020-10-13 15:00:14,212 INFO L226 Difference]: Without dead ends: 1159 [2020-10-13 15:00:14,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-10-13 15:00:14,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1136. [2020-10-13 15:00:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2020-10-13 15:00:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1600 transitions. [2020-10-13 15:00:14,299 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1600 transitions. Word has length 153 [2020-10-13 15:00:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:14,301 INFO L479 AbstractCegarLoop]: Abstraction has 1136 states and 1600 transitions. [2020-10-13 15:00:14,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1600 transitions. [2020-10-13 15:00:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 15:00:14,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:14,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:14,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:00:14,306 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:14,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1277639179, now seen corresponding path program 1 times [2020-10-13 15:00:14,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:14,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318080109] [2020-10-13 15:00:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:16,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:19,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 15:00:19,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:00:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:00:19,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:00:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 15:00:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:00:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:19,613 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:19,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:19,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:19,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:00:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:19,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318080109] [2020-10-13 15:00:19,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:19,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:00:19,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251909715] [2020-10-13 15:00:19,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:00:19,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:19,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:00:19,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:19,685 INFO L87 Difference]: Start difference. First operand 1136 states and 1600 transitions. Second operand 4 states. [2020-10-13 15:00:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:22,263 INFO L93 Difference]: Finished difference Result 2328 states and 3370 transitions. [2020-10-13 15:00:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:00:22,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-13 15:00:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:22,273 INFO L225 Difference]: With dead ends: 2328 [2020-10-13 15:00:22,273 INFO L226 Difference]: Without dead ends: 1380 [2020-10-13 15:00:22,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-13 15:00:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1357. [2020-10-13 15:00:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2020-10-13 15:00:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1960 transitions. [2020-10-13 15:00:22,379 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1960 transitions. Word has length 156 [2020-10-13 15:00:22,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:22,379 INFO L479 AbstractCegarLoop]: Abstraction has 1357 states and 1960 transitions. [2020-10-13 15:00:22,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:00:22,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1960 transitions. [2020-10-13 15:00:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 15:00:22,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:22,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:22,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:00:22,386 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:22,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1730480725, now seen corresponding path program 1 times [2020-10-13 15:00:22,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:22,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034555749] [2020-10-13 15:00:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:22,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:22,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:27,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:27,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 15:00:27,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:00:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:00:27,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 15:00:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:27,833 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:27,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:27,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:27,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:27,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:00:27,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:27,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034555749] [2020-10-13 15:00:27,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:27,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:27,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793725118] [2020-10-13 15:00:27,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:27,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:27,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:27,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:27,928 INFO L87 Difference]: Start difference. First operand 1357 states and 1960 transitions. Second operand 5 states. [2020-10-13 15:00:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:30,903 INFO L93 Difference]: Finished difference Result 3925 states and 5653 transitions. [2020-10-13 15:00:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:30,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 15:00:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:30,920 INFO L225 Difference]: With dead ends: 3925 [2020-10-13 15:00:30,920 INFO L226 Difference]: Without dead ends: 2611 [2020-10-13 15:00:30,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-10-13 15:00:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2581. [2020-10-13 15:00:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2581 states. [2020-10-13 15:00:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 3700 transitions. [2020-10-13 15:00:31,091 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 3700 transitions. Word has length 159 [2020-10-13 15:00:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:31,092 INFO L479 AbstractCegarLoop]: Abstraction has 2581 states and 3700 transitions. [2020-10-13 15:00:31,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 3700 transitions. [2020-10-13 15:00:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 15:00:31,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:31,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:31,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:00:31,098 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash 973300787, now seen corresponding path program 1 times [2020-10-13 15:00:31,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:31,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702781501] [2020-10-13 15:00:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:31,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:31,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:34,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:35,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:36,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:36,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 15:00:36,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:00:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:00:36,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:00:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 15:00:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:00:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:36,425 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:36,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:36,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:36,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:36,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:36,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:00:36,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:36,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702781501] [2020-10-13 15:00:36,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:36,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:00:36,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627994114] [2020-10-13 15:00:36,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:00:36,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:36,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:00:36,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:36,533 INFO L87 Difference]: Start difference. First operand 2581 states and 3700 transitions. Second operand 4 states. [2020-10-13 15:00:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:39,037 INFO L93 Difference]: Finished difference Result 7633 states and 10939 transitions. [2020-10-13 15:00:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:00:39,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-13 15:00:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:39,062 INFO L225 Difference]: With dead ends: 7633 [2020-10-13 15:00:39,062 INFO L226 Difference]: Without dead ends: 5116 [2020-10-13 15:00:39,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:39,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2020-10-13 15:00:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 2587. [2020-10-13 15:00:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2020-10-13 15:00:39,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3706 transitions. [2020-10-13 15:00:39,267 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3706 transitions. Word has length 160 [2020-10-13 15:00:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:39,267 INFO L479 AbstractCegarLoop]: Abstraction has 2587 states and 3706 transitions. [2020-10-13 15:00:39,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:00:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3706 transitions. [2020-10-13 15:00:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 15:00:39,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:39,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:39,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:00:39,273 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash 366693492, now seen corresponding path program 1 times [2020-10-13 15:00:39,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:39,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689307379] [2020-10-13 15:00:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:39,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:44,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:44,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 15:00:44,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:00:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:00:44,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:00:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:00:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:44,595 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:44,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:44,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:44,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:44,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:00:44,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:44,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689307379] [2020-10-13 15:00:44,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:44,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:44,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046450302] [2020-10-13 15:00:44,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:44,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:44,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:44,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:44,650 INFO L87 Difference]: Start difference. First operand 2587 states and 3706 transitions. Second operand 5 states. [2020-10-13 15:00:46,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:46,365 INFO L93 Difference]: Finished difference Result 5108 states and 7318 transitions. [2020-10-13 15:00:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:46,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 15:00:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:46,378 INFO L225 Difference]: With dead ends: 5108 [2020-10-13 15:00:46,378 INFO L226 Difference]: Without dead ends: 2587 [2020-10-13 15:00:46,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2020-10-13 15:00:46,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2580. [2020-10-13 15:00:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2580 states. [2020-10-13 15:00:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3695 transitions. [2020-10-13 15:00:46,538 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3695 transitions. Word has length 161 [2020-10-13 15:00:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:46,541 INFO L479 AbstractCegarLoop]: Abstraction has 2580 states and 3695 transitions. [2020-10-13 15:00:46,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3695 transitions. [2020-10-13 15:00:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 15:00:46,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:46,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:46,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:00:46,551 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1692163071, now seen corresponding path program 1 times [2020-10-13 15:00:46,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:46,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210924415] [2020-10-13 15:00:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:46,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:46,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:51,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 15:00:51,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 15:00:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:00:51,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:00:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:00:51,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 15:00:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:51,869 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:00:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:00:51,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:51,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210924415] [2020-10-13 15:00:51,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:51,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:00:51,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991798280] [2020-10-13 15:00:51,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:00:51,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:51,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:00:51,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:51,940 INFO L87 Difference]: Start difference. First operand 2580 states and 3695 transitions. Second operand 4 states. [2020-10-13 15:00:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:55,389 INFO L93 Difference]: Finished difference Result 7073 states and 10180 transitions. [2020-10-13 15:00:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:00:55,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-13 15:00:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:55,412 INFO L225 Difference]: With dead ends: 7073 [2020-10-13 15:00:55,412 INFO L226 Difference]: Without dead ends: 4977 [2020-10-13 15:00:55,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2020-10-13 15:00:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4947. [2020-10-13 15:00:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4947 states. [2020-10-13 15:00:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7026 transitions. [2020-10-13 15:00:55,785 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7026 transitions. Word has length 161 [2020-10-13 15:00:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:55,786 INFO L479 AbstractCegarLoop]: Abstraction has 4947 states and 7026 transitions. [2020-10-13 15:00:55,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:00:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7026 transitions. [2020-10-13 15:00:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 15:00:55,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:55,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:55,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:00:55,794 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:55,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:55,794 INFO L82 PathProgramCache]: Analyzing trace with hash 293884226, now seen corresponding path program 1 times [2020-10-13 15:00:55,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:55,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138677364] [2020-10-13 15:00:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:55,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:57,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:58,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:00,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:00,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 15:01:00,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:01:00,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:01:00,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:01:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:01:00,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:01,154 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:01:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:01,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:01,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:01,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:01:01,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:01,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138677364] [2020-10-13 15:01:01,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:01,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:01,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853374292] [2020-10-13 15:01:01,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:01,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:01,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:01,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:01,211 INFO L87 Difference]: Start difference. First operand 4947 states and 7026 transitions. Second operand 5 states. [2020-10-13 15:01:03,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:03,729 INFO L93 Difference]: Finished difference Result 12417 states and 17582 transitions. [2020-10-13 15:01:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:03,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 15:01:03,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:03,762 INFO L225 Difference]: With dead ends: 12417 [2020-10-13 15:01:03,762 INFO L226 Difference]: Without dead ends: 7596 [2020-10-13 15:01:03,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2020-10-13 15:01:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 4975. [2020-10-13 15:01:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2020-10-13 15:01:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 7054 transitions. [2020-10-13 15:01:04,124 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 7054 transitions. Word has length 161 [2020-10-13 15:01:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:04,124 INFO L479 AbstractCegarLoop]: Abstraction has 4975 states and 7054 transitions. [2020-10-13 15:01:04,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 7054 transitions. [2020-10-13 15:01:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 15:01:04,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:04,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:04,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:01:04,133 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:04,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1738308764, now seen corresponding path program 1 times [2020-10-13 15:01:04,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:04,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872737713] [2020-10-13 15:01:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:05,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:08,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:09,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:09,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 15:01:09,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:01:09,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:01:09,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:01:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:01:09,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:09,434 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:01:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:09,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:09,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:09,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:01:09,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:09,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872737713] [2020-10-13 15:01:09,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:09,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:09,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239743426] [2020-10-13 15:01:09,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:09,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:09,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:09,481 INFO L87 Difference]: Start difference. First operand 4975 states and 7054 transitions. Second operand 4 states. [2020-10-13 15:01:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:13,150 INFO L93 Difference]: Finished difference Result 14540 states and 20627 transitions. [2020-10-13 15:01:13,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:13,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-13 15:01:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:13,173 INFO L225 Difference]: With dead ends: 14540 [2020-10-13 15:01:13,173 INFO L226 Difference]: Without dead ends: 9791 [2020-10-13 15:01:13,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9791 states. [2020-10-13 15:01:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9791 to 4997. [2020-10-13 15:01:13,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4997 states. [2020-10-13 15:01:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 7076 transitions. [2020-10-13 15:01:13,581 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 7076 transitions. Word has length 162 [2020-10-13 15:01:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:13,582 INFO L479 AbstractCegarLoop]: Abstraction has 4997 states and 7076 transitions. [2020-10-13 15:01:13,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 7076 transitions. [2020-10-13 15:01:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 15:01:13,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:13,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:13,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:01:13,589 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1273353068, now seen corresponding path program 1 times [2020-10-13 15:01:13,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:13,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648120743] [2020-10-13 15:01:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:18,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:18,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:18,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:18,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 15:01:18,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:18,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:01:18,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 15:01:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:01:18,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:18,875 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:01:18,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:18,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:18,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:18,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:18,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:18,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:18,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:18,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:18,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:18,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:18,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648120743] [2020-10-13 15:01:18,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:18,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:18,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198077246] [2020-10-13 15:01:18,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:18,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:18,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:18,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:18,912 INFO L87 Difference]: Start difference. First operand 4997 states and 7076 transitions. Second operand 4 states. [2020-10-13 15:01:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:21,588 INFO L93 Difference]: Finished difference Result 11333 states and 16551 transitions. [2020-10-13 15:01:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:21,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-13 15:01:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:21,609 INFO L225 Difference]: With dead ends: 11333 [2020-10-13 15:01:21,610 INFO L226 Difference]: Without dead ends: 7165 [2020-10-13 15:01:21,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2020-10-13 15:01:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 6453. [2020-10-13 15:01:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6453 states. [2020-10-13 15:01:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 9424 transitions. [2020-10-13 15:01:22,126 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 9424 transitions. Word has length 163 [2020-10-13 15:01:22,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:22,126 INFO L479 AbstractCegarLoop]: Abstraction has 6453 states and 9424 transitions. [2020-10-13 15:01:22,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 9424 transitions. [2020-10-13 15:01:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 15:01:22,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:22,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:22,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:01:22,133 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1528384885, now seen corresponding path program 1 times [2020-10-13 15:01:22,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:22,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777082875] [2020-10-13 15:01:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:27,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 15:01:27,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:01:27,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:01:27,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:01:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:01:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:27,472 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:01:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:27,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:27,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:27,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:27,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777082875] [2020-10-13 15:01:27,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:27,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:27,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532031231] [2020-10-13 15:01:27,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:27,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:27,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:27,507 INFO L87 Difference]: Start difference. First operand 6453 states and 9424 transitions. Second operand 5 states. [2020-10-13 15:01:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:29,444 INFO L93 Difference]: Finished difference Result 11201 states and 16365 transitions. [2020-10-13 15:01:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:29,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-13 15:01:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:29,457 INFO L225 Difference]: With dead ends: 11201 [2020-10-13 15:01:29,458 INFO L226 Difference]: Without dead ends: 4951 [2020-10-13 15:01:29,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2020-10-13 15:01:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4937. [2020-10-13 15:01:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4937 states. [2020-10-13 15:01:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 7189 transitions. [2020-10-13 15:01:29,904 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 7189 transitions. Word has length 163 [2020-10-13 15:01:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:29,904 INFO L479 AbstractCegarLoop]: Abstraction has 4937 states and 7189 transitions. [2020-10-13 15:01:29,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 7189 transitions. [2020-10-13 15:01:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 15:01:29,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:29,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:29,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:01:29,913 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:29,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:29,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1588091395, now seen corresponding path program 1 times [2020-10-13 15:01:29,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:29,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546295961] [2020-10-13 15:01:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:34,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:34,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 15:01:34,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:01:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:01:34,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 15:01:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:01:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:35,201 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:01:35,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:35,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:35,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:35,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:35,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:35,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:35,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:35,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:35,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:35,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:35,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546295961] [2020-10-13 15:01:35,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:35,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:35,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217775261] [2020-10-13 15:01:35,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:35,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:35,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:35,238 INFO L87 Difference]: Start difference. First operand 4937 states and 7189 transitions. Second operand 4 states. [2020-10-13 15:01:37,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:37,981 INFO L93 Difference]: Finished difference Result 11834 states and 17740 transitions. [2020-10-13 15:01:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:37,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-13 15:01:37,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:37,998 INFO L225 Difference]: With dead ends: 11834 [2020-10-13 15:01:37,998 INFO L226 Difference]: Without dead ends: 7634 [2020-10-13 15:01:38,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7634 states. [2020-10-13 15:01:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7634 to 6863. [2020-10-13 15:01:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6863 states. [2020-10-13 15:01:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6863 states to 6863 states and 10270 transitions. [2020-10-13 15:01:38,593 INFO L78 Accepts]: Start accepts. Automaton has 6863 states and 10270 transitions. Word has length 165 [2020-10-13 15:01:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:38,593 INFO L479 AbstractCegarLoop]: Abstraction has 6863 states and 10270 transitions. [2020-10-13 15:01:38,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6863 states and 10270 transitions. [2020-10-13 15:01:38,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 15:01:38,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:38,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:38,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:01:38,597 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:38,597 INFO L82 PathProgramCache]: Analyzing trace with hash -941468921, now seen corresponding path program 1 times [2020-10-13 15:01:38,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:38,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175930377] [2020-10-13 15:01:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:43,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 15:01:43,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:01:43,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:01:43,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:43,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:01:43,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 15:01:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:43,936 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:01:43,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:43,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:43,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:43,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:43,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175930377] [2020-10-13 15:01:43,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:43,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:43,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191499217] [2020-10-13 15:01:43,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:43,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:43,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:43,985 INFO L87 Difference]: Start difference. First operand 6863 states and 10270 transitions. Second operand 5 states. [2020-10-13 15:01:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:47,966 INFO L93 Difference]: Finished difference Result 15867 states and 23948 transitions. [2020-10-13 15:01:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:47,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-13 15:01:47,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:47,983 INFO L225 Difference]: With dead ends: 15867 [2020-10-13 15:01:47,984 INFO L226 Difference]: Without dead ends: 9657 [2020-10-13 15:01:47,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9657 states. [2020-10-13 15:01:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9657 to 9636. [2020-10-13 15:01:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9636 states. [2020-10-13 15:01:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9636 states to 9636 states and 14273 transitions. [2020-10-13 15:01:48,652 INFO L78 Accepts]: Start accepts. Automaton has 9636 states and 14273 transitions. Word has length 166 [2020-10-13 15:01:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:48,652 INFO L479 AbstractCegarLoop]: Abstraction has 9636 states and 14273 transitions. [2020-10-13 15:01:48,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 9636 states and 14273 transitions. [2020-10-13 15:01:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 15:01:48,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:48,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:48,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:01:48,656 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:48,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:48,657 INFO L82 PathProgramCache]: Analyzing trace with hash -553267761, now seen corresponding path program 1 times [2020-10-13 15:01:48,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:48,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665647079] [2020-10-13 15:01:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:48,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:53,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 15:01:53,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:01:53,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:01:53,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:01:53,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 15:01:53,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:53,958 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:01:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:53,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:53,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:53,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:54,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665647079] [2020-10-13 15:01:54,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:54,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:54,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146721961] [2020-10-13 15:01:54,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:54,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:54,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:54,025 INFO L87 Difference]: Start difference. First operand 9636 states and 14273 transitions. Second operand 4 states. [2020-10-13 15:01:58,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:58,387 INFO L93 Difference]: Finished difference Result 26065 states and 38762 transitions. [2020-10-13 15:01:58,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:58,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-13 15:01:58,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:58,413 INFO L225 Difference]: With dead ends: 26065 [2020-10-13 15:01:58,413 INFO L226 Difference]: Without dead ends: 17458 [2020-10-13 15:01:58,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17458 states. [2020-10-13 15:01:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17458 to 17423. [2020-10-13 15:01:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17423 states. [2020-10-13 15:01:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17423 states to 17423 states and 25475 transitions. [2020-10-13 15:01:59,651 INFO L78 Accepts]: Start accepts. Automaton has 17423 states and 25475 transitions. Word has length 168 [2020-10-13 15:01:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:59,651 INFO L479 AbstractCegarLoop]: Abstraction has 17423 states and 25475 transitions. [2020-10-13 15:01:59,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 17423 states and 25475 transitions. [2020-10-13 15:01:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 15:01:59,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:59,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:59,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:01:59,659 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1732264596, now seen corresponding path program 1 times [2020-10-13 15:01:59,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:59,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241607665] [2020-10-13 15:01:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:00,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:00,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:00,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:04,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:04,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 15:02:04,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:02:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 15:02:04,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:02:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:02:04,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:05,041 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:02:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:05,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:05,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:05,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241607665] [2020-10-13 15:02:05,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:05,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:05,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67891500] [2020-10-13 15:02:05,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:05,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:05,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:05,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:05,088 INFO L87 Difference]: Start difference. First operand 17423 states and 25475 transitions. Second operand 5 states. [2020-10-13 15:02:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:09,306 INFO L93 Difference]: Finished difference Result 39862 states and 58343 transitions. [2020-10-13 15:02:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:09,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 15:02:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:09,337 INFO L225 Difference]: With dead ends: 39862 [2020-10-13 15:02:09,337 INFO L226 Difference]: Without dead ends: 27114 [2020-10-13 15:02:09,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27114 states. [2020-10-13 15:02:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27114 to 17423. [2020-10-13 15:02:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17423 states. [2020-10-13 15:02:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17423 states to 17423 states and 25463 transitions. [2020-10-13 15:02:10,763 INFO L78 Accepts]: Start accepts. Automaton has 17423 states and 25463 transitions. Word has length 168 [2020-10-13 15:02:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:10,764 INFO L479 AbstractCegarLoop]: Abstraction has 17423 states and 25463 transitions. [2020-10-13 15:02:10,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 17423 states and 25463 transitions. [2020-10-13 15:02:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 15:02:10,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:10,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:10,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:02:10,770 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:10,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1118092455, now seen corresponding path program 1 times [2020-10-13 15:02:10,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:10,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601848701] [2020-10-13 15:02:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:10,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:11,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:15,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:15,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 15:02:15,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:02:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:02:15,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:02:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:02:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:02:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:16,068 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:02:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:16,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:16,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601848701] [2020-10-13 15:02:16,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:16,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:02:16,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284567219] [2020-10-13 15:02:16,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:02:16,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:16,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:02:16,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:16,102 INFO L87 Difference]: Start difference. First operand 17423 states and 25463 transitions. Second operand 4 states. [2020-10-13 15:02:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:20,105 INFO L93 Difference]: Finished difference Result 45089 states and 65981 transitions. [2020-10-13 15:02:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:02:20,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-13 15:02:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:20,137 INFO L225 Difference]: With dead ends: 45089 [2020-10-13 15:02:20,138 INFO L226 Difference]: Without dead ends: 28037 [2020-10-13 15:02:20,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28037 states. [2020-10-13 15:02:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28037 to 17423. [2020-10-13 15:02:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17423 states. [2020-10-13 15:02:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17423 states to 17423 states and 25446 transitions. [2020-10-13 15:02:21,487 INFO L78 Accepts]: Start accepts. Automaton has 17423 states and 25446 transitions. Word has length 169 [2020-10-13 15:02:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:21,487 INFO L479 AbstractCegarLoop]: Abstraction has 17423 states and 25446 transitions. [2020-10-13 15:02:21,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:02:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 17423 states and 25446 transitions. [2020-10-13 15:02:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 15:02:21,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:21,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:21,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:02:21,494 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:21,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:21,494 INFO L82 PathProgramCache]: Analyzing trace with hash -968398731, now seen corresponding path program 1 times [2020-10-13 15:02:21,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:21,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510920765] [2020-10-13 15:02:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:21,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:21,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:26,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:26,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 15:02:26,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:02:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:02:26,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 15:02:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:02:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:26,837 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:02:26,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:26,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:02:26,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:26,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510920765] [2020-10-13 15:02:26,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:26,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:26,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418951075] [2020-10-13 15:02:26,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:26,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:26,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:26,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:26,876 INFO L87 Difference]: Start difference. First operand 17423 states and 25446 transitions. Second operand 5 states. [2020-10-13 15:02:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:29,718 INFO L93 Difference]: Finished difference Result 30193 states and 44133 transitions. [2020-10-13 15:02:29,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:29,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 15:02:29,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:29,742 INFO L225 Difference]: With dead ends: 30193 [2020-10-13 15:02:29,742 INFO L226 Difference]: Without dead ends: 14485 [2020-10-13 15:02:29,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14485 states. [2020-10-13 15:02:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14485 to 14454. [2020-10-13 15:02:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14454 states. [2020-10-13 15:02:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14454 states to 14454 states and 21084 transitions. [2020-10-13 15:02:30,858 INFO L78 Accepts]: Start accepts. Automaton has 14454 states and 21084 transitions. Word has length 170 [2020-10-13 15:02:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:30,859 INFO L479 AbstractCegarLoop]: Abstraction has 14454 states and 21084 transitions. [2020-10-13 15:02:30,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 14454 states and 21084 transitions. [2020-10-13 15:02:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 15:02:30,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:30,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:30,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:02:30,864 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:30,865 INFO L82 PathProgramCache]: Analyzing trace with hash 56174666, now seen corresponding path program 1 times [2020-10-13 15:02:30,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:30,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325555977] [2020-10-13 15:02:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:34,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:34,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:35,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:35,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 15:02:35,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:02:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:02:35,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 15:02:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:02:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:36,195 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:02:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:36,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:36,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:36,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:02:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:36,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325555977] [2020-10-13 15:02:36,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:36,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:36,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374755300] [2020-10-13 15:02:36,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:36,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:36,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:36,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:36,232 INFO L87 Difference]: Start difference. First operand 14454 states and 21084 transitions. Second operand 5 states. [2020-10-13 15:02:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:41,330 INFO L93 Difference]: Finished difference Result 39064 states and 58206 transitions. [2020-10-13 15:02:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:41,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 15:02:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:41,360 INFO L225 Difference]: With dead ends: 39064 [2020-10-13 15:02:41,360 INFO L226 Difference]: Without dead ends: 27093 [2020-10-13 15:02:41,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:41,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27093 states. [2020-10-13 15:02:42,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27093 to 15038. [2020-10-13 15:02:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15038 states. [2020-10-13 15:02:42,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15038 states to 15038 states and 21731 transitions. [2020-10-13 15:02:42,567 INFO L78 Accepts]: Start accepts. Automaton has 15038 states and 21731 transitions. Word has length 172 [2020-10-13 15:02:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:42,568 INFO L479 AbstractCegarLoop]: Abstraction has 15038 states and 21731 transitions. [2020-10-13 15:02:42,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 15038 states and 21731 transitions. [2020-10-13 15:02:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 15:02:42,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:42,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:42,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:02:42,574 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:42,574 INFO L82 PathProgramCache]: Analyzing trace with hash 2146735051, now seen corresponding path program 1 times [2020-10-13 15:02:42,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:42,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111065406] [2020-10-13 15:02:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:42,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:42,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:47,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:47,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 15:02:47,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:02:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:02:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:02:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 15:02:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:47,917 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:02:47,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:47,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:47,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:47,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:47,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:47,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111065406] [2020-10-13 15:02:47,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:47,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:47,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84916787] [2020-10-13 15:02:47,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:47,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:47,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:47,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:47,971 INFO L87 Difference]: Start difference. First operand 15038 states and 21731 transitions. Second operand 5 states. [2020-10-13 15:02:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:52,718 INFO L93 Difference]: Finished difference Result 25719 states and 37309 transitions. [2020-10-13 15:02:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:52,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 15:02:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:52,736 INFO L225 Difference]: With dead ends: 25719 [2020-10-13 15:02:52,736 INFO L226 Difference]: Without dead ends: 15463 [2020-10-13 15:02:52,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15463 states. [2020-10-13 15:02:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15463 to 15162. [2020-10-13 15:02:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15162 states. [2020-10-13 15:02:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15162 states to 15162 states and 21872 transitions. [2020-10-13 15:02:53,935 INFO L78 Accepts]: Start accepts. Automaton has 15162 states and 21872 transitions. Word has length 172 [2020-10-13 15:02:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:53,935 INFO L479 AbstractCegarLoop]: Abstraction has 15162 states and 21872 transitions. [2020-10-13 15:02:53,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15162 states and 21872 transitions. [2020-10-13 15:02:53,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 15:02:53,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:53,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:53,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:02:53,941 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:53,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1781842363, now seen corresponding path program 1 times [2020-10-13 15:02:53,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:53,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800042968] [2020-10-13 15:02:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:54,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:58,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:58,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 15:02:58,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:02:58,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:02:58,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:02:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 15:02:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:59,291 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-13 15:02:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:59,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:59,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:59,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:59,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800042968] [2020-10-13 15:02:59,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:59,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:59,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354370463] [2020-10-13 15:02:59,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:59,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:59,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:59,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:59,345 INFO L87 Difference]: Start difference. First operand 15162 states and 21872 transitions. Second operand 5 states. [2020-10-13 15:03:02,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:02,948 INFO L93 Difference]: Finished difference Result 24356 states and 35351 transitions. [2020-10-13 15:03:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:02,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 15:03:02,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:02,965 INFO L225 Difference]: With dead ends: 24356 [2020-10-13 15:03:02,965 INFO L226 Difference]: Without dead ends: 14201 [2020-10-13 15:03:02,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:03:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14201 states. [2020-10-13 15:03:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14201 to 13857. [2020-10-13 15:03:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13857 states. [2020-10-13 15:03:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 19983 transitions. [2020-10-13 15:03:04,147 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 19983 transitions. Word has length 174 [2020-10-13 15:03:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:04,148 INFO L479 AbstractCegarLoop]: Abstraction has 13857 states and 19983 transitions. [2020-10-13 15:03:04,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 19983 transitions. [2020-10-13 15:03:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 15:03:04,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:04,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:04,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:03:04,154 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:04,154 INFO L82 PathProgramCache]: Analyzing trace with hash 207903096, now seen corresponding path program 1 times [2020-10-13 15:03:04,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:04,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806290085] [2020-10-13 15:03:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:04,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking...