/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:16:29,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:16:29,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:16:29,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:16:29,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:16:29,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:16:29,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:16:29,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:16:29,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:16:29,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:16:29,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:16:29,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:16:29,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:16:29,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:16:29,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:16:29,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:16:29,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:16:29,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:16:29,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:16:29,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:16:29,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:16:29,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:16:29,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:16:29,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:16:29,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:16:29,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:16:29,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:16:29,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:16:29,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:16:29,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:16:29,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:16:29,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:16:29,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:16:29,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:16:29,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:16:29,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:16:29,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:16:29,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:16:29,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:16:29,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:16:29,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:16:29,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 02:16:29,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:16:29,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:16:29,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:16:29,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:16:29,831 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:16:29,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:16:29,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:16:29,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:16:29,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:16:29,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:16:29,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:16:29,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:16:29,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:16:29,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:16:29,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:16:29,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:16:29,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:16:29,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:16:29,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:16:29,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:16:29,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:16:29,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:16:29,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:16:29,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:16:29,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:16:29,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:16:29,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:16:29,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:16:29,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:16:29,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:16:30,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:16:30,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:16:30,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:16:30,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:16:30,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:16:30,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-15 02:16:30,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87715d82/745cfeb9e4124b3cb694f913a77ef85f/FLAG7739d6269 [2020-10-15 02:16:30,687 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:16:30,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-15 02:16:30,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87715d82/745cfeb9e4124b3cb694f913a77ef85f/FLAG7739d6269 [2020-10-15 02:16:31,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87715d82/745cfeb9e4124b3cb694f913a77ef85f [2020-10-15 02:16:31,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:16:31,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:16:31,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:16:31,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:16:31,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:16:31,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fcb34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31, skipping insertion in model container [2020-10-15 02:16:31,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:16:31,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:16:31,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:16:31,305 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:16:31,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:16:31,347 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:16:31,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31 WrapperNode [2020-10-15 02:16:31,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:16:31,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:16:31,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:16:31,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:16:31,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (1/1) ... [2020-10-15 02:16:31,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:16:31,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:16:31,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:16:31,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:16:31,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:16:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:16:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:16:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-15 02:16:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:16:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:16:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:16:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-15 02:16:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:16:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:16:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:16:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:16:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:16:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:16:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:16:31,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:16:31,858 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:16:31,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:16:31 BoogieIcfgContainer [2020-10-15 02:16:31,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:16:31,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:16:31,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:16:31,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:16:31,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:16:31" (1/3) ... [2020-10-15 02:16:31,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c90ef20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:16:31, skipping insertion in model container [2020-10-15 02:16:31,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:31" (2/3) ... [2020-10-15 02:16:31,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c90ef20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:16:31, skipping insertion in model container [2020-10-15 02:16:31,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:16:31" (3/3) ... [2020-10-15 02:16:31,870 INFO L109 eAbstractionObserver]: Analyzing ICFG sep60-2.i [2020-10-15 02:16:31,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:16:31,890 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:16:31,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:16:31,932 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:16:31,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:16:31,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:16:31,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:16:31,933 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:16:31,933 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:16:31,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:16:31,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:16:31,954 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-15 02:16:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:16:31,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:31,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:31,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:31,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:31,966 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-15 02:16:31,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:31,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484997076] [2020-10-15 02:16:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:32,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:16:33,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:16:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-15 02:16:33,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:16:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:16:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:16:33,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:33,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:33,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:16:33,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:33,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 02:16:33,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:16:33,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:16:33,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:16:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:33,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 02:16:33,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:16:33,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:33,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:33,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 02:16:33,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:33,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:16:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:16:33,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484997076] [2020-10-15 02:16:33,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:16:33,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:16:33,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426618025] [2020-10-15 02:16:33,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:16:33,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:33,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:16:33,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:16:33,636 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 11 states. [2020-10-15 02:16:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:33,956 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-10-15 02:16:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:16:33,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:16:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:33,971 INFO L225 Difference]: With dead ends: 86 [2020-10-15 02:16:33,971 INFO L226 Difference]: Without dead ends: 52 [2020-10-15 02:16:33,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:16:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-15 02:16:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-15 02:16:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 02:16:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2020-10-15 02:16:34,037 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 32 [2020-10-15 02:16:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:34,037 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2020-10-15 02:16:34,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:16:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2020-10-15 02:16:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-15 02:16:34,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:34,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:34,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:16:34,042 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:34,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1764294835, now seen corresponding path program 1 times [2020-10-15 02:16:34,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:34,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973179590] [2020-10-15 02:16:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:34,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:35,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 02:16:35,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-15 02:16:35,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:35,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:16:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:16:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:16:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:35,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:35,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:35,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:35,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:35,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:35,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:16:35,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:35,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:16:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:16:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:16:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:35,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:35,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:16:35,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:35,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:16:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:16:35,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:35,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:35,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 02:16:35,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 02:16:35,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:35,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:16:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:16:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:16:35,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973179590] [2020-10-15 02:16:35,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:35,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:16:35,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814471199] [2020-10-15 02:16:35,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:16:35,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:35,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:16:35,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:16:35,342 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand 5 states. [2020-10-15 02:16:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:35,454 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2020-10-15 02:16:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:16:35,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-15 02:16:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:35,456 INFO L225 Difference]: With dead ends: 62 [2020-10-15 02:16:35,456 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 02:16:35,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:16:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 02:16:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-15 02:16:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 02:16:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-15 02:16:35,465 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 35 [2020-10-15 02:16:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:35,466 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-15 02:16:35,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:16:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-15 02:16:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 02:16:35,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:35,468 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:35,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:16:35,468 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash -738945770, now seen corresponding path program 2 times [2020-10-15 02:16:35,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:35,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745739744] [2020-10-15 02:16:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:16:40,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:16:40,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 02:16:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:40,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:40,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:40,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:40,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:16:40,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:40,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:40,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:40,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 02:16:40,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 02:16:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:40,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 02:16:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 02:16:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:40,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:40,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 02:16:40,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-15 02:16:40,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745739744] [2020-10-15 02:16:40,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:40,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 02:16:40,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738347739] [2020-10-15 02:16:40,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:16:40,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:40,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:16:40,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:16:40,774 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-15 02:16:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:40,956 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-10-15 02:16:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:16:40,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-15 02:16:40,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:40,959 INFO L225 Difference]: With dead ends: 58 [2020-10-15 02:16:40,959 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 02:16:40,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:16:40,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 02:16:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-15 02:16:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-15 02:16:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-15 02:16:40,977 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 50 [2020-10-15 02:16:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:40,978 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-15 02:16:40,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:16:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-15 02:16:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 02:16:40,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:40,983 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:40,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:16:40,984 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:40,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1066977793, now seen corresponding path program 3 times [2020-10-15 02:16:40,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:40,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700062059] [2020-10-15 02:16:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:46,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 02:16:46,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 02:16:46,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:46,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:16:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:46,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:46,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:46,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:16:46,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:46,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:46,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:46,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-15 02:16:46,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:46,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:46,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:46,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:46,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 02:16:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:46,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:46,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 02:16:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:46,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:46,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-15 02:16:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:46,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-15 02:16:46,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700062059] [2020-10-15 02:16:46,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:46,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:16:46,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517303661] [2020-10-15 02:16:46,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:16:46,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:46,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:16:46,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:16:46,403 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 7 states. [2020-10-15 02:16:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:46,553 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2020-10-15 02:16:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:16:46,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-10-15 02:16:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:46,555 INFO L225 Difference]: With dead ends: 64 [2020-10-15 02:16:46,555 INFO L226 Difference]: Without dead ends: 39 [2020-10-15 02:16:46,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:16:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-15 02:16:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-15 02:16:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 02:16:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-15 02:16:46,563 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 59 [2020-10-15 02:16:46,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:46,563 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-15 02:16:46,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:16:46,564 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-15 02:16:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:16:46,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:46,566 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:46,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:16:46,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash -65292490, now seen corresponding path program 4 times [2020-10-15 02:16:46,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:46,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753253461] [2020-10-15 02:16:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:16:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:16:51,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:51,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:16:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:51,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:16:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:51,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:51,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:51,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:51,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:51,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:51,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 02:16:51,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:51,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:51,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 02:16:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:51,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:51,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:51,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-15 02:16:51,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:51,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:51,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:16:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:51,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:51,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:51,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:51,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-15 02:16:51,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:51,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:51,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-15 02:16:51,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753253461] [2020-10-15 02:16:51,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:51,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:16:51,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595520408] [2020-10-15 02:16:51,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:16:51,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:16:51,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:16:51,950 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 8 states. [2020-10-15 02:16:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:52,145 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2020-10-15 02:16:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:16:52,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-15 02:16:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:52,148 INFO L225 Difference]: With dead ends: 70 [2020-10-15 02:16:52,148 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 02:16:52,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:16:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 02:16:52,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-15 02:16:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 02:16:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-15 02:16:52,162 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 68 [2020-10-15 02:16:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:52,163 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-15 02:16:52,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:16:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-15 02:16:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 02:16:52,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:52,169 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:52,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:16:52,169 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:52,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1783214881, now seen corresponding path program 5 times [2020-10-15 02:16:52,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:52,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389098133] [2020-10-15 02:16:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:52,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:52,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:52,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:57,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 02:16:57,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 02:16:57,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:57,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:57,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:57,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:57,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:57,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:57,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:57,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:57,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:57,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 02:16:57,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:57,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:57,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 02:16:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:57,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:57,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:57,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-15 02:16:57,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:57,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:57,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-15 02:16:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:57,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:57,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-15 02:16:57,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:57,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:57,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:57,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 105 proven. 210 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-15 02:16:57,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389098133] [2020-10-15 02:16:57,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:57,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 02:16:57,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092451705] [2020-10-15 02:16:57,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 02:16:57,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:57,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 02:16:57,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:16:57,682 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 9 states. [2020-10-15 02:16:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:57,899 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-10-15 02:16:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:16:57,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-15 02:16:57,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:57,901 INFO L225 Difference]: With dead ends: 76 [2020-10-15 02:16:57,902 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 02:16:57,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:16:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 02:16:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-15 02:16:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-15 02:16:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-15 02:16:57,911 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 77 [2020-10-15 02:16:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:57,911 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-15 02:16:57,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 02:16:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-15 02:16:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 02:16:57,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:57,916 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:57,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:16:57,917 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:57,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:57,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1461104298, now seen corresponding path program 6 times [2020-10-15 02:16:57,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:57,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926286043] [2020-10-15 02:16:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:02,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:02,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:17:02,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:02,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:17:02,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:02,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:17:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:17:02,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:02,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:02,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:02,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:02,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:02,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:02,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:03,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:03,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:17:03,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-15 02:17:03,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:03,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:17:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:17:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 02:17:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:03,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:03,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:17:03,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-15 02:17:03,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:03,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:17:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:17:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 02:17:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:03,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:03,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:17:03,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-15 02:17:03,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:03,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:17:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:17:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 306 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-15 02:17:03,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926286043] [2020-10-15 02:17:03,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:03,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:17:03,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899393122] [2020-10-15 02:17:03,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:17:03,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:03,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:17:03,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:17:03,408 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2020-10-15 02:17:03,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:03,656 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2020-10-15 02:17:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:17:03,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-15 02:17:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:03,659 INFO L225 Difference]: With dead ends: 82 [2020-10-15 02:17:03,659 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 02:17:03,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:17:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 02:17:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-15 02:17:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-15 02:17:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-15 02:17:03,675 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 86 [2020-10-15 02:17:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:03,676 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-15 02:17:03,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:17:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-15 02:17:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 02:17:03,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:03,681 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:03,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:17:03,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:03,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:03,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1543869505, now seen corresponding path program 7 times [2020-10-15 02:17:03,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:03,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156443582] [2020-10-15 02:17:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:03,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:08,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:08,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 02:17:08,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 02:17:08,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:08,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:17:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 02:17:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:17:08,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:08,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:08,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:08,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:08,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:08,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:08,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:08,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:08,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:08,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:08,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:09,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:17:09,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:09,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-15 02:17:09,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:09,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:17:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:17:09,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 02:17:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:09,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:09,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:17:09,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-15 02:17:09,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:09,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:17:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:17:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:09,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:17:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:09,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:09,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:17:09,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:09,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-15 02:17:09,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:09,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:17:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:17:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 210 proven. 420 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-15 02:17:09,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156443582] [2020-10-15 02:17:09,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:09,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:17:09,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87504424] [2020-10-15 02:17:09,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:17:09,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:09,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:17:09,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:17:09,400 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-10-15 02:17:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:09,683 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2020-10-15 02:17:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:17:09,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-10-15 02:17:09,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:09,685 INFO L225 Difference]: With dead ends: 88 [2020-10-15 02:17:09,685 INFO L226 Difference]: Without dead ends: 51 [2020-10-15 02:17:09,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:17:09,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-15 02:17:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-15 02:17:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 02:17:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-15 02:17:09,703 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 95 [2020-10-15 02:17:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:09,703 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-15 02:17:09,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:17:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-15 02:17:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 02:17:09,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:09,705 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:09,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:17:09,706 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:09,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:09,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1095277706, now seen corresponding path program 8 times [2020-10-15 02:17:09,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:09,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303986492] [2020-10-15 02:17:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:09,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:09,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:14,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:14,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 02:17:14,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:17:14,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:14,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:17:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 02:17:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:17:14,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:17:14,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:14,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:14,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:14,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:14,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:15,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:15,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:17:15,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-15 02:17:15,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:15,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:17:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:17:15,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 02:17:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:15,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:15,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:17:15,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:15,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-15 02:17:15,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:15,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:17:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:17:15,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:17:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:15,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:17:15,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-15 02:17:15,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:15,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:17:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:17:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 276 proven. 552 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-15 02:17:15,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303986492] [2020-10-15 02:17:15,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:15,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:17:15,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499249390] [2020-10-15 02:17:15,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:17:15,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:15,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:17:15,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:17:15,456 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 12 states. [2020-10-15 02:17:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:15,808 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2020-10-15 02:17:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:17:15,809 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-10-15 02:17:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:15,812 INFO L225 Difference]: With dead ends: 94 [2020-10-15 02:17:15,812 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 02:17:15,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:17:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 02:17:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-15 02:17:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 02:17:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-15 02:17:15,830 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 104 [2020-10-15 02:17:15,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:15,831 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-15 02:17:15,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:17:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-15 02:17:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 02:17:15,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:15,834 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:15,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:17:15,834 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:15,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash -799436129, now seen corresponding path program 9 times [2020-10-15 02:17:15,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:15,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633730309] [2020-10-15 02:17:15,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:15,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:20,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:20,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 02:17:20,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:20,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:17:20,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:20,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:17:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 02:17:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:17:20,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:20,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:20,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:20,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:20,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:20,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:21,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:17:21,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-15 02:17:21,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:21,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:21,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:17:21,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:21,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:17:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 02:17:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:21,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:17:21,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:21,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-15 02:17:21,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:21,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:17:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:17:21,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-15 02:17:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:21,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:21,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:17:21,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:21,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-15 02:17:21,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:21,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:17:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:17:21,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-15 02:17:21,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633730309] [2020-10-15 02:17:21,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:21,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:17:21,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095730310] [2020-10-15 02:17:21,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:17:21,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:21,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:17:21,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:17:21,507 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 13 states. [2020-10-15 02:17:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:21,822 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2020-10-15 02:17:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:17:21,822 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-10-15 02:17:21,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:21,824 INFO L225 Difference]: With dead ends: 100 [2020-10-15 02:17:21,824 INFO L226 Difference]: Without dead ends: 57 [2020-10-15 02:17:21,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:17:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-15 02:17:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-15 02:17:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 02:17:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2020-10-15 02:17:21,833 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 113 [2020-10-15 02:17:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:21,833 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2020-10-15 02:17:21,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:17:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2020-10-15 02:17:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 02:17:21,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:21,835 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:21,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:17:21,835 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:21,836 INFO L82 PathProgramCache]: Analyzing trace with hash -178262634, now seen corresponding path program 10 times [2020-10-15 02:17:21,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:21,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578069973] [2020-10-15 02:17:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:21,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:26,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 02:17:26,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 02:17:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:26,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 02:17:26,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:26,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:26,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:26,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:26,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:26,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:26,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:27,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:27,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:27,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:27,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-15 02:17:27,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:27,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:27,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:27,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 02:17:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:27,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:27,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:27,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:27,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-15 02:17:27,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:27,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-15 02:17:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:27,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:27,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:27,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:27,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-15 02:17:27,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:27,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 435 proven. 870 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-15 02:17:27,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578069973] [2020-10-15 02:17:27,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:27,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:17:27,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934471477] [2020-10-15 02:17:27,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:17:27,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:27,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:17:27,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:17:27,924 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand 14 states. [2020-10-15 02:17:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:28,323 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2020-10-15 02:17:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:17:28,323 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-15 02:17:28,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:28,327 INFO L225 Difference]: With dead ends: 106 [2020-10-15 02:17:28,327 INFO L226 Difference]: Without dead ends: 60 [2020-10-15 02:17:28,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:17:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-15 02:17:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-15 02:17:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-15 02:17:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2020-10-15 02:17:28,349 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 122 [2020-10-15 02:17:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:28,350 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2020-10-15 02:17:28,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:17:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2020-10-15 02:17:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 02:17:28,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:28,357 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:28,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:17:28,358 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:28,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:28,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2088354175, now seen corresponding path program 11 times [2020-10-15 02:17:28,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:28,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997438064] [2020-10-15 02:17:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 02:17:33,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 02:17:33,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:33,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-15 02:17:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:33,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:33,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:33,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:33,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:33,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:33,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:33,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:33,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:33,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:33,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:33,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:33,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:33,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-15 02:17:33,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:33,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:17:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:34,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:34,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:34,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:34,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-15 02:17:34,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:34,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:34,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-15 02:17:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:34,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:34,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:34,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-15 02:17:34,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:34,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 528 proven. 1056 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-15 02:17:34,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997438064] [2020-10-15 02:17:34,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:34,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 02:17:34,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436689311] [2020-10-15 02:17:34,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:17:34,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:34,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:17:34,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:17:34,874 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand 15 states. [2020-10-15 02:17:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:35,233 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-15 02:17:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 02:17:35,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 131 [2020-10-15 02:17:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:35,234 INFO L225 Difference]: With dead ends: 112 [2020-10-15 02:17:35,235 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 02:17:35,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:17:35,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 02:17:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-15 02:17:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 02:17:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-15 02:17:35,242 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 131 [2020-10-15 02:17:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:35,242 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-15 02:17:35,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:17:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-15 02:17:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 02:17:35,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:35,244 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:35,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:17:35,245 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:35,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2017259446, now seen corresponding path program 12 times [2020-10-15 02:17:35,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:35,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389368792] [2020-10-15 02:17:35,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:40,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 02:17:40,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-15 02:17:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:40,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:40,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:40,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:40,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:40,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:40,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:40,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:40,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:40,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:40,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:40,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-15 02:17:40,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:40,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 02:17:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:41,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:41,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:41,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-15 02:17:41,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:41,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:41,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:17:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:41,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:41,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:41,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:41,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-15 02:17:41,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:41,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2013 backedges. 630 proven. 1260 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-15 02:17:41,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389368792] [2020-10-15 02:17:41,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:41,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 02:17:41,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960048993] [2020-10-15 02:17:41,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 02:17:41,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:41,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 02:17:41,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:17:41,450 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 16 states. [2020-10-15 02:17:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:41,825 INFO L93 Difference]: Finished difference Result 118 states and 154 transitions. [2020-10-15 02:17:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 02:17:41,825 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 140 [2020-10-15 02:17:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:41,827 INFO L225 Difference]: With dead ends: 118 [2020-10-15 02:17:41,827 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 02:17:41,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:17:41,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 02:17:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-15 02:17:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 02:17:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-15 02:17:41,835 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 140 [2020-10-15 02:17:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:41,835 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-15 02:17:41,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 02:17:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-15 02:17:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-15 02:17:41,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:41,837 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:41,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:17:41,837 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:41,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:41,837 INFO L82 PathProgramCache]: Analyzing trace with hash -427755425, now seen corresponding path program 13 times [2020-10-15 02:17:41,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:41,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025862806] [2020-10-15 02:17:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:46,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:46,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-15 02:17:46,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 02:17:46,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:46,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:46,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:46,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:46,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:46,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:46,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:46,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:46,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:47,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:47,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-15 02:17:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:47,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:47,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-15 02:17:47,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:47,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:47,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-15 02:17:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:47,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:48,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 741 proven. 1482 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-15 02:17:48,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025862806] [2020-10-15 02:17:48,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:48,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 02:17:48,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039459907] [2020-10-15 02:17:48,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 02:17:48,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:48,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 02:17:48,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:17:48,150 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand 17 states. [2020-10-15 02:17:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:48,563 INFO L93 Difference]: Finished difference Result 124 states and 162 transitions. [2020-10-15 02:17:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:17:48,563 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 149 [2020-10-15 02:17:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:48,565 INFO L225 Difference]: With dead ends: 124 [2020-10-15 02:17:48,565 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 02:17:48,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:17:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 02:17:48,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-15 02:17:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 02:17:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-15 02:17:48,572 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 149 [2020-10-15 02:17:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:48,573 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-15 02:17:48,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 02:17:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-15 02:17:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 02:17:48,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:48,575 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:48,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:17:48,575 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:48,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2044171818, now seen corresponding path program 14 times [2020-10-15 02:17:48,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:48,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776793871] [2020-10-15 02:17:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:48,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:53,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:53,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 02:17:53,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:53,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 02:17:53,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:53,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-15 02:17:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:53,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:53,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:53,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:53,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:53,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:53,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:53,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:53,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:53,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:53,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-15 02:17:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:54,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 02:17:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:54,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:54,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-15 02:17:54,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:54,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:54,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-15 02:17:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:55,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:55,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:55,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:55,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-15 02:17:55,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:55,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:55,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 861 proven. 1722 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-15 02:17:55,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776793871] [2020-10-15 02:17:55,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:55,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:17:55,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293358971] [2020-10-15 02:17:55,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:17:55,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:55,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:17:55,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:17:55,060 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 18 states. [2020-10-15 02:17:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:55,528 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2020-10-15 02:17:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:17:55,528 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2020-10-15 02:17:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:55,529 INFO L225 Difference]: With dead ends: 130 [2020-10-15 02:17:55,529 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 02:17:55,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:17:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 02:17:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-15 02:17:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 02:17:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2020-10-15 02:17:55,542 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 158 [2020-10-15 02:17:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:55,543 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2020-10-15 02:17:55,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:17:55,545 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2020-10-15 02:17:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:17:55,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:55,547 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:55,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:17:55,547 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:55,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1995098305, now seen corresponding path program 15 times [2020-10-15 02:17:55,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:55,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214131286] [2020-10-15 02:17:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:00,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:00,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 02:18:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:00,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:00,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:00,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:00,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:18:00,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-15 02:18:00,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:00,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:18:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:18:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 02:18:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:01,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:01,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:18:01,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-15 02:18:01,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:01,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:18:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:18:01,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-15 02:18:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:02,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:02,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:18:02,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-15 02:18:02,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:02,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:18:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:18:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 990 proven. 1980 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-15 02:18:02,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214131286] [2020-10-15 02:18:02,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:02,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 02:18:02,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44791537] [2020-10-15 02:18:02,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:18:02,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:02,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:18:02,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:18:02,255 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand 19 states. [2020-10-15 02:18:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:02,737 INFO L93 Difference]: Finished difference Result 136 states and 178 transitions. [2020-10-15 02:18:02,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:18:02,737 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 167 [2020-10-15 02:18:02,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:02,739 INFO L225 Difference]: With dead ends: 136 [2020-10-15 02:18:02,739 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 02:18:02,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:18:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 02:18:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-15 02:18:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 02:18:02,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2020-10-15 02:18:02,746 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 167 [2020-10-15 02:18:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:02,746 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2020-10-15 02:18:02,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:18:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2020-10-15 02:18:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 02:18:02,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:02,749 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:02,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:18:02,749 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:02,750 INFO L82 PathProgramCache]: Analyzing trace with hash 293362678, now seen corresponding path program 16 times [2020-10-15 02:18:02,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:02,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385323487] [2020-10-15 02:18:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:02,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:07,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:07,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-15 02:18:07,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 02:18:07,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:07,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:18:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:18:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:07,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:07,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:07,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:07,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:07,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:07,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:08,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:08,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:18:08,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-15 02:18:08,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:08,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:18:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:18:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:08,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 02:18:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:08,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:09,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:09,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:18:09,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-15 02:18:09,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:09,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:18:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:09,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:18:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:09,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-15 02:18:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:09,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:09,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:18:09,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-15 02:18:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:09,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:18:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:18:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3543 backedges. 1128 proven. 2256 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-15 02:18:09,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385323487] [2020-10-15 02:18:09,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:09,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 02:18:09,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120655159] [2020-10-15 02:18:09,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 02:18:09,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:09,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 02:18:09,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-15 02:18:09,626 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand 20 states. [2020-10-15 02:18:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:10,182 INFO L93 Difference]: Finished difference Result 142 states and 186 transitions. [2020-10-15 02:18:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:18:10,182 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-15 02:18:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:10,184 INFO L225 Difference]: With dead ends: 142 [2020-10-15 02:18:10,184 INFO L226 Difference]: Without dead ends: 78 [2020-10-15 02:18:10,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 02:18:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-15 02:18:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-15 02:18:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-15 02:18:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-15 02:18:10,191 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 176 [2020-10-15 02:18:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:10,191 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-15 02:18:10,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 02:18:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-15 02:18:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 02:18:10,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:10,193 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:10,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:18:10,194 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2069659167, now seen corresponding path program 17 times [2020-10-15 02:18:10,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:10,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095972618] [2020-10-15 02:18:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:10,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:10,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:15,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:15,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-15 02:18:15,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 02:18:15,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:15,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:18:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-15 02:18:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:18:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:15,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:15,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:15,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:15,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:15,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:18:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-15 02:18:15,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:15,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:18:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:18:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:18:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:16,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:16,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:18:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-15 02:18:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:16,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:18:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:18:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-15 02:18:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:16,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:17,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:17,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:18:17,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-15 02:18:17,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:17,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:18:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:18:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:18:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 1275 proven. 2550 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-15 02:18:17,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095972618] [2020-10-15 02:18:17,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:17,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 02:18:17,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611030012] [2020-10-15 02:18:17,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 02:18:17,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:17,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 02:18:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:18:17,242 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 21 states. [2020-10-15 02:18:17,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:17,774 INFO L93 Difference]: Finished difference Result 148 states and 194 transitions. [2020-10-15 02:18:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 02:18:17,780 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 185 [2020-10-15 02:18:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:17,781 INFO L225 Difference]: With dead ends: 148 [2020-10-15 02:18:17,782 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 02:18:17,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 02:18:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 02:18:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-15 02:18:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 02:18:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2020-10-15 02:18:17,789 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 185 [2020-10-15 02:18:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:17,789 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2020-10-15 02:18:17,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 02:18:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2020-10-15 02:18:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-15 02:18:17,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:17,791 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:17,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:18:17,791 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1611843094, now seen corresponding path program 18 times [2020-10-15 02:18:17,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:17,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699007976] [2020-10-15 02:18:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:17,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:17,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:22,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:22,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-15 02:18:22,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:18:22,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:22,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:22,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:22,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:22,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:22,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:22,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:22,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:18:22,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:22,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:23,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-15 02:18:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:24,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:24,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-15 02:18:24,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:24,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:24,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-15 02:18:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:24,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:24,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:24,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-15 02:18:24,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:24,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:24,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1431 proven. 2862 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-15 02:18:24,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699007976] [2020-10-15 02:18:24,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:24,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 02:18:24,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993165399] [2020-10-15 02:18:24,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 02:18:24,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:24,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 02:18:24,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-15 02:18:24,825 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 22 states. [2020-10-15 02:18:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:25,407 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2020-10-15 02:18:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:18:25,408 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 194 [2020-10-15 02:18:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:25,409 INFO L225 Difference]: With dead ends: 154 [2020-10-15 02:18:25,409 INFO L226 Difference]: Without dead ends: 84 [2020-10-15 02:18:25,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 02:18:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-15 02:18:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-15 02:18:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 02:18:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2020-10-15 02:18:25,425 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 194 [2020-10-15 02:18:25,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:25,425 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2020-10-15 02:18:25,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 02:18:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2020-10-15 02:18:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-15 02:18:25,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:25,429 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:25,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:18:25,429 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:25,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:25,430 INFO L82 PathProgramCache]: Analyzing trace with hash -788738817, now seen corresponding path program 19 times [2020-10-15 02:18:25,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:25,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179585480] [2020-10-15 02:18:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:25,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:25,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:30,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:30,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:30,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:30,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:30,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:30,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:31,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:31,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:31,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-15 02:18:31,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:31,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:31,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:18:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:31,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:32,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:32,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:32,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-15 02:18:32,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:32,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:32,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-15 02:18:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:32,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:32,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:32,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:32,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:32,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-15 02:18:32,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:32,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:32,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:32,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4974 backedges. 1596 proven. 3192 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-15 02:18:32,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179585480] [2020-10-15 02:18:32,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:32,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 02:18:32,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280854307] [2020-10-15 02:18:32,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 02:18:32,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:32,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 02:18:32,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:18:32,874 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand 23 states. [2020-10-15 02:18:33,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:33,511 INFO L93 Difference]: Finished difference Result 160 states and 210 transitions. [2020-10-15 02:18:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 02:18:33,511 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 203 [2020-10-15 02:18:33,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:33,512 INFO L225 Difference]: With dead ends: 160 [2020-10-15 02:18:33,512 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 02:18:33,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 02:18:33,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 02:18:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-15 02:18:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 02:18:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-15 02:18:33,523 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 203 [2020-10-15 02:18:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:33,523 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-15 02:18:33,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 02:18:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-15 02:18:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:18:33,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:33,526 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:33,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 02:18:33,526 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:33,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1421498314, now seen corresponding path program 20 times [2020-10-15 02:18:33,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:33,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212953455] [2020-10-15 02:18:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:33,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:33,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:38,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:38,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:18:38,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-15 02:18:38,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:38,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:18:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:18:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:38,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:38,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:38,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:38,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:39,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:39,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:39,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-15 02:18:39,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:39,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:18:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:18:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:39,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:18:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:39,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:39,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:40,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:40,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:40,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-10-15 02:18:40,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:40,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:18:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:18:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:18:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:40,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:41,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:41,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:41,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-15 02:18:41,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:41,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:18:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:18:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1770 proven. 3540 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-15 02:18:41,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212953455] [2020-10-15 02:18:41,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:41,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 02:18:41,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405562972] [2020-10-15 02:18:41,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 02:18:41,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:41,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 02:18:41,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-15 02:18:41,277 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 24 states. [2020-10-15 02:18:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:42,001 INFO L93 Difference]: Finished difference Result 166 states and 218 transitions. [2020-10-15 02:18:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 02:18:42,001 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 212 [2020-10-15 02:18:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:42,002 INFO L225 Difference]: With dead ends: 166 [2020-10-15 02:18:42,002 INFO L226 Difference]: Without dead ends: 90 [2020-10-15 02:18:42,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 02:18:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-15 02:18:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-15 02:18:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 02:18:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 113 transitions. [2020-10-15 02:18:42,013 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 113 transitions. Word has length 212 [2020-10-15 02:18:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:42,014 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 113 transitions. [2020-10-15 02:18:42,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 02:18:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 113 transitions. [2020-10-15 02:18:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-15 02:18:42,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:42,015 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:42,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 02:18:42,016 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:42,016 INFO L82 PathProgramCache]: Analyzing trace with hash -98819105, now seen corresponding path program 21 times [2020-10-15 02:18:42,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:42,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161064323] [2020-10-15 02:18:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:42,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:42,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:42,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:47,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-15 02:18:47,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:47,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-15 02:18:47,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:47,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:18:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-15 02:18:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:18:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:47,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:47,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:47,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:47,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:47,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:47,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:47,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:47,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:47,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:47,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:47,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:47,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:47,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:18:47,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-15 02:18:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:47,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:18:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:18:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-15 02:18:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:48,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:49,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:49,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:18:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-10-15 02:18:49,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:49,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:18:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:18:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-15 02:18:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:49,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:49,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:49,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:18:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-15 02:18:49,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:49,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:18:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:18:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6063 backedges. 1953 proven. 3906 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-15 02:18:49,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161064323] [2020-10-15 02:18:49,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:49,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 02:18:49,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161077549] [2020-10-15 02:18:49,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 02:18:49,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:49,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 02:18:49,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:18:49,951 INFO L87 Difference]: Start difference. First operand 88 states and 113 transitions. Second operand 25 states. [2020-10-15 02:18:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:50,701 INFO L93 Difference]: Finished difference Result 172 states and 226 transitions. [2020-10-15 02:18:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:18:50,705 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 221 [2020-10-15 02:18:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:50,706 INFO L225 Difference]: With dead ends: 172 [2020-10-15 02:18:50,706 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 02:18:50,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 02:18:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 02:18:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-15 02:18:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 02:18:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2020-10-15 02:18:50,713 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 221 [2020-10-15 02:18:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:50,713 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2020-10-15 02:18:50,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 02:18:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2020-10-15 02:18:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 02:18:50,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:50,714 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:50,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 02:18:50,715 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:50,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1074855338, now seen corresponding path program 22 times [2020-10-15 02:18:50,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:50,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20273419] [2020-10-15 02:18:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:55,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:55,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-15 02:18:55,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:18:55,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:55,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-15 02:18:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:55,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:55,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:55,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:55,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:55,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:55,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:55,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:55,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:55,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:55,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:56,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:56,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:18:56,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:56,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-15 02:18:56,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:56,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-15 02:18:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:57,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:57,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:18:57,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-15 02:18:57,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:57,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:57,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-15 02:18:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:57,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:58,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:58,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:18:58,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:58,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-15 02:18:58,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:58,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:58,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6648 backedges. 2145 proven. 4290 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-15 02:18:58,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20273419] [2020-10-15 02:18:58,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:58,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 02:18:58,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88442001] [2020-10-15 02:18:58,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 02:18:58,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:58,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 02:18:58,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-15 02:18:58,875 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand 26 states. [2020-10-15 02:18:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:59,669 INFO L93 Difference]: Finished difference Result 178 states and 234 transitions. [2020-10-15 02:18:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 02:18:59,670 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 230 [2020-10-15 02:18:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:59,671 INFO L225 Difference]: With dead ends: 178 [2020-10-15 02:18:59,671 INFO L226 Difference]: Without dead ends: 96 [2020-10-15 02:18:59,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 02:18:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-15 02:18:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-15 02:18:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-15 02:18:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2020-10-15 02:18:59,678 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 230 [2020-10-15 02:18:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:59,679 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2020-10-15 02:18:59,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 02:18:59,679 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2020-10-15 02:18:59,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-15 02:18:59,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:59,681 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:59,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 02:18:59,681 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:59,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:59,681 INFO L82 PathProgramCache]: Analyzing trace with hash 593527487, now seen corresponding path program 23 times [2020-10-15 02:18:59,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:59,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537726580] [2020-10-15 02:18:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:04,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-15 02:19:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-15 02:19:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:04,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:19:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-15 02:19:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:19:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:04,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:04,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:04,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:04,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:04,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:04,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:19:04,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:05,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:19:05,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:05,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-15 02:19:05,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:05,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:19:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:05,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:19:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-15 02:19:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:07,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:07,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:19:07,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:07,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-10-15 02:19:07,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:07,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:19:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:19:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-15 02:19:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:08,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:08,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:19:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-15 02:19:08,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:08,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:19:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:19:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 2346 proven. 4692 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-15 02:19:08,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537726580] [2020-10-15 02:19:08,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:08,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 02:19:08,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538783214] [2020-10-15 02:19:08,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 02:19:08,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:08,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 02:19:08,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:19:08,260 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand 27 states. [2020-10-15 02:19:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:09,081 INFO L93 Difference]: Finished difference Result 184 states and 242 transitions. [2020-10-15 02:19:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 02:19:09,082 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 239 [2020-10-15 02:19:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:09,083 INFO L225 Difference]: With dead ends: 184 [2020-10-15 02:19:09,083 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 02:19:09,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 02:19:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 02:19:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-15 02:19:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 02:19:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2020-10-15 02:19:09,095 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 239 [2020-10-15 02:19:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:09,095 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2020-10-15 02:19:09,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 02:19:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2020-10-15 02:19:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-15 02:19:09,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:09,097 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:09,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 02:19:09,098 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:09,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1637297034, now seen corresponding path program 24 times [2020-10-15 02:19:09,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:09,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97422302] [2020-10-15 02:19:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:09,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:14,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:14,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-15 02:19:14,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:14,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-15 02:19:14,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:14,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:19:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:19:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:19:14,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:14,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:14,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:14,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:14,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:14,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:14,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:14,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:14,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:15,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:15,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:19:15,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-15 02:19:15,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:15,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:19:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:19:15,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:15,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-15 02:19:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:15,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:16,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:16,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:19:16,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:16,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-15 02:19:16,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:16,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:19:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:16,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:19:16,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-15 02:19:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:17,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:17,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:19:17,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:17,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-15 02:19:17,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:17,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:17,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:19:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:19:17,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7899 backedges. 2556 proven. 5112 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-15 02:19:17,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97422302] [2020-10-15 02:19:17,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:17,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 02:19:17,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422425154] [2020-10-15 02:19:17,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 02:19:17,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:17,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 02:19:17,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-15 02:19:17,901 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand 28 states. [2020-10-15 02:19:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:18,817 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2020-10-15 02:19:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 02:19:18,817 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 248 [2020-10-15 02:19:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:18,819 INFO L225 Difference]: With dead ends: 190 [2020-10-15 02:19:18,819 INFO L226 Difference]: Without dead ends: 102 [2020-10-15 02:19:18,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 02:19:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-15 02:19:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-15 02:19:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-15 02:19:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2020-10-15 02:19:18,826 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 248 [2020-10-15 02:19:18,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:18,827 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2020-10-15 02:19:18,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 02:19:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2020-10-15 02:19:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-15 02:19:18,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:18,828 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:18,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 02:19:18,829 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1779439201, now seen corresponding path program 25 times [2020-10-15 02:19:18,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:18,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282678984] [2020-10-15 02:19:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:23,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:23,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-15 02:19:23,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:23,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-15 02:19:23,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:23,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:19:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-15 02:19:23,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:19:23,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:23,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:23,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:23,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:23,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:23,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:23,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:23,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:23,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:25,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:25,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 02:19:25,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-15 02:19:25,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:25,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:19:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:19:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:25,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-15 02:19:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:26,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:26,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 02:19:26,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:26,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1220 [2020-10-15 02:19:26,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:26,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:19:26,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-15 02:19:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:26,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:28,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:28,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 02:19:28,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:28,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-15 02:19:28,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:28,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:19:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:19:28,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8565 backedges. 2775 proven. 5550 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-15 02:19:28,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282678984] [2020-10-15 02:19:28,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:28,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 02:19:28,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769223656] [2020-10-15 02:19:28,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 02:19:28,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:28,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 02:19:28,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:19:28,114 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand 29 states. [2020-10-15 02:19:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:29,020 INFO L93 Difference]: Finished difference Result 196 states and 258 transitions. [2020-10-15 02:19:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 02:19:29,020 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 257 [2020-10-15 02:19:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:29,022 INFO L225 Difference]: With dead ends: 196 [2020-10-15 02:19:29,022 INFO L226 Difference]: Without dead ends: 105 [2020-10-15 02:19:29,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 02:19:29,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-15 02:19:29,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-15 02:19:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-15 02:19:29,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 133 transitions. [2020-10-15 02:19:29,030 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 133 transitions. Word has length 257 [2020-10-15 02:19:29,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:29,030 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 133 transitions. [2020-10-15 02:19:29,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 02:19:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 133 transitions. [2020-10-15 02:19:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-15 02:19:29,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:29,032 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:29,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 02:19:29,033 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash 445456022, now seen corresponding path program 26 times [2020-10-15 02:19:29,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:29,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814992231] [2020-10-15 02:19:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:34,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:34,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-15 02:19:34,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-15 02:19:34,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:34,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:34,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:19:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:19:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:19:34,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:34,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:34,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:34,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:34,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:34,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:34,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:34,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:35,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:35,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 02:19:35,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-15 02:19:35,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:35,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:19:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:19:35,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:35,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-15 02:19:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:37,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:37,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 02:19:37,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-10-15 02:19:37,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:37,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:19:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:19:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-15 02:19:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:37,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:37,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:38,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:38,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 02:19:38,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-15 02:19:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:38,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:19:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:19:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9258 backedges. 3003 proven. 6006 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-15 02:19:38,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814992231] [2020-10-15 02:19:38,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:38,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 02:19:38,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81224432] [2020-10-15 02:19:38,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 02:19:38,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 02:19:38,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-15 02:19:38,839 INFO L87 Difference]: Start difference. First operand 103 states and 133 transitions. Second operand 30 states. [2020-10-15 02:19:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:39,839 INFO L93 Difference]: Finished difference Result 202 states and 266 transitions. [2020-10-15 02:19:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 02:19:39,841 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 266 [2020-10-15 02:19:39,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:39,842 INFO L225 Difference]: With dead ends: 202 [2020-10-15 02:19:39,842 INFO L226 Difference]: Without dead ends: 108 [2020-10-15 02:19:39,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 02:19:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-15 02:19:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-15 02:19:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-15 02:19:39,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2020-10-15 02:19:39,851 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 266 [2020-10-15 02:19:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:39,852 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2020-10-15 02:19:39,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 02:19:39,852 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2020-10-15 02:19:39,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-15 02:19:39,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:39,856 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:39,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 02:19:39,857 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:39,857 INFO L82 PathProgramCache]: Analyzing trace with hash 393238655, now seen corresponding path program 27 times [2020-10-15 02:19:39,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:39,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90377600] [2020-10-15 02:19:39,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:39,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:40,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:45,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:45,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-15 02:19:45,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:45,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-15 02:19:45,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:45,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:19:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:19:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:19:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:45,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:45,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:45,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:45,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:45,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:45,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:45,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:45,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:46,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:46,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 02:19:46,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-15 02:19:46,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:46,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:19:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:19:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:19:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:48,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:48,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 02:19:48,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-15 02:19:48,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:48,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:19:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:19:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-15 02:19:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:49,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:49,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 02:19:49,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-10-15 02:19:49,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:49,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:19:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:19:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9978 backedges. 3240 proven. 6480 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-15 02:19:50,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90377600] [2020-10-15 02:19:50,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:50,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 02:19:50,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607755744] [2020-10-15 02:19:50,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 02:19:50,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:50,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 02:19:50,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:19:50,054 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand 31 states. [2020-10-15 02:19:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:51,101 INFO L93 Difference]: Finished difference Result 208 states and 274 transitions. [2020-10-15 02:19:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 02:19:51,101 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 275 [2020-10-15 02:19:51,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:51,103 INFO L225 Difference]: With dead ends: 208 [2020-10-15 02:19:51,103 INFO L226 Difference]: Without dead ends: 111 [2020-10-15 02:19:51,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-15 02:19:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-15 02:19:51,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-15 02:19:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-15 02:19:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2020-10-15 02:19:51,110 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 275 [2020-10-15 02:19:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:51,110 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2020-10-15 02:19:51,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 02:19:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2020-10-15 02:19:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-15 02:19:51,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:51,112 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:51,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 02:19:51,112 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash 2075517110, now seen corresponding path program 28 times [2020-10-15 02:19:51,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:51,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397502526] [2020-10-15 02:19:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:51,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:56,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:56,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-15 02:19:56,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:56,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5165 [2020-10-15 02:19:56,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:56,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:19:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-15 02:19:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:19:56,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:56,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:56,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:56,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:56,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:56,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:56,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:57,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:57,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:19:57,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1534 [2020-10-15 02:19:57,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:57,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:19:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:57,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:19:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-15 02:19:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:00,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:00,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:20:00,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:00,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1653 [2020-10-15 02:20:00,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:00,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:20:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:20:00,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-15 02:20:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:01,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:01,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:20:01,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:01,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-15 02:20:01,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:01,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:01,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:20:01,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:01,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:20:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10725 backedges. 3486 proven. 6972 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-15 02:20:01,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397502526] [2020-10-15 02:20:01,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:20:01,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 02:20:01,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570375432] [2020-10-15 02:20:01,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 02:20:01,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:20:01,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 02:20:01,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-15 02:20:01,793 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand 32 states. [2020-10-15 02:20:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:20:02,848 INFO L93 Difference]: Finished difference Result 214 states and 282 transitions. [2020-10-15 02:20:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 02:20:02,848 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 284 [2020-10-15 02:20:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:20:02,850 INFO L225 Difference]: With dead ends: 214 [2020-10-15 02:20:02,850 INFO L226 Difference]: Without dead ends: 114 [2020-10-15 02:20:02,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 02:20:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-15 02:20:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-15 02:20:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-15 02:20:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2020-10-15 02:20:02,858 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 284 [2020-10-15 02:20:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:20:02,859 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2020-10-15 02:20:02,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 02:20:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2020-10-15 02:20:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-15 02:20:02,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:20:02,861 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:20:02,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 02:20:02,861 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:20:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:20:02,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1242025823, now seen corresponding path program 29 times [2020-10-15 02:20:02,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:20:02,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185316904] [2020-10-15 02:20:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:20:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:03,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:07,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:07,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-15 02:20:07,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:20:07,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-15 02:20:07,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:07,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:20:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-15 02:20:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:20:07,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:08,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:20:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:08,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:08,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:20:08,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:20:08,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:08,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:20:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:20:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:20:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:20:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:09,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:09,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 02:20:09,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:09,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1687 [2020-10-15 02:20:09,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:09,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:09,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:20:09,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:09,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:20:09,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-15 02:20:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 02:20:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-15 02:20:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:12,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:20:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:20:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:12,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:20:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:13,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 02:20:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-10-15 02:20:13,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:13,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:20:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:20:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11499 backedges. 3741 proven. 7482 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-15 02:20:13,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185316904] [2020-10-15 02:20:13,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:20:13,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 02:20:13,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140490816] [2020-10-15 02:20:13,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 02:20:13,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:20:13,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 02:20:13,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:20:13,942 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand 33 states. [2020-10-15 02:20:15,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:20:15,120 INFO L93 Difference]: Finished difference Result 220 states and 290 transitions. [2020-10-15 02:20:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 02:20:15,121 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 293 [2020-10-15 02:20:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:20:15,122 INFO L225 Difference]: With dead ends: 220 [2020-10-15 02:20:15,123 INFO L226 Difference]: Without dead ends: 117 [2020-10-15 02:20:15,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 02:20:15,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-15 02:20:15,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-10-15 02:20:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-15 02:20:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2020-10-15 02:20:15,132 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 293 [2020-10-15 02:20:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:20:15,132 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2020-10-15 02:20:15,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 02:20:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2020-10-15 02:20:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-15 02:20:15,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:20:15,134 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:20:15,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 02:20:15,134 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:20:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:20:15,134 INFO L82 PathProgramCache]: Analyzing trace with hash 482155222, now seen corresponding path program 30 times [2020-10-15 02:20:15,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:20:15,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420460971] [2020-10-15 02:20:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:20:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:20,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:20,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-15 02:20:20,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:20:20,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-15 02:20:20,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:20,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:20:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-15 02:20:20,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:20:20,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:20,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:20:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:20,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:20,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:20,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:20:20,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:20:20,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:20,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:20:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:20:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:20:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:20:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:20,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:22,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:22,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 02:20:22,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1846 [2020-10-15 02:20:22,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:22,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:20:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:20:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-15 02:20:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:22,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:24,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:24,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 02:20:24,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1866 [2020-10-15 02:20:24,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:24,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:20:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:20:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:24,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-15 02:20:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:24,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:26,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:26,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 02:20:26,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1919 [2020-10-15 02:20:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:26,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:20:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:20:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12300 backedges. 4005 proven. 8010 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2020-10-15 02:20:26,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420460971] [2020-10-15 02:20:26,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:20:26,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 02:20:26,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206338592] [2020-10-15 02:20:26,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 02:20:26,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:20:26,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 02:20:26,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 02:20:26,756 INFO L87 Difference]: Start difference. First operand 115 states and 149 transitions. Second operand 34 states. [2020-10-15 02:20:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:20:27,962 INFO L93 Difference]: Finished difference Result 226 states and 298 transitions. [2020-10-15 02:20:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 02:20:27,962 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 302 [2020-10-15 02:20:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:20:27,964 INFO L225 Difference]: With dead ends: 226 [2020-10-15 02:20:27,964 INFO L226 Difference]: Without dead ends: 120 [2020-10-15 02:20:27,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 02:20:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-15 02:20:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-15 02:20:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 02:20:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 153 transitions. [2020-10-15 02:20:27,972 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 153 transitions. Word has length 302 [2020-10-15 02:20:27,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:20:27,973 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 153 transitions. [2020-10-15 02:20:27,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 02:20:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 153 transitions. [2020-10-15 02:20:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-15 02:20:27,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:20:27,975 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:20:27,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 02:20:27,975 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:20:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:20:27,976 INFO L82 PathProgramCache]: Analyzing trace with hash 207375935, now seen corresponding path program 31 times [2020-10-15 02:20:27,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:20:27,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387550508] [2020-10-15 02:20:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:20:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:28,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking...