/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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:10:16,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:10:16,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:10:16,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:10:16,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:10:16,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:10:16,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:10:16,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:10:16,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:10:16,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:10:16,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:10:16,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:10:16,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:10:16,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:10:16,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:10:16,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:10:16,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:10:16,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:10:16,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:10:16,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:10:16,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:10:16,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:10:16,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:10:16,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:10:16,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:10:16,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:10:16,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:10:16,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:10:16,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:10:16,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:10:16,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:10:16,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:10:16,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:10:16,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:10:16,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:10:16,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:10:16,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:10:16,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:10:16,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:10:16,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:10:16,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:10:16,714 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 [2020-09-25 03:10:16,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:10:16,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:10:16,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:10:16,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:10:16,749 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:10:16,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:10:16,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:10:16,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:10:16,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:10:16,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:10:16,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:10:16,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:10:16,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:10:16,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:10:16,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:10:16,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:10:16,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:10:16,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:10:16,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:10:16,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:10:16,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:10:16,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:16,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:10:16,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:10:16,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:10:16,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:10:16,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:10:16,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:10:16,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:10:16,754 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:10:17,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:10:17,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:10:17,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:10:17,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:10:17,244 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:10:17,245 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 03:10:17,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5635d86e/5872e356d94c4223bbb47433e04088b9/FLAG28587da75 [2020-09-25 03:10:17,819 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:10:17,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 03:10:17,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5635d86e/5872e356d94c4223bbb47433e04088b9/FLAG28587da75 [2020-09-25 03:10:18,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5635d86e/5872e356d94c4223bbb47433e04088b9 [2020-09-25 03:10:18,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:10:18,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:10:18,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:18,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:10:18,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:10:18,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18, skipping insertion in model container [2020-09-25 03:10:18,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:10:18,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:10:18,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:18,546 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:10:18,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:18,579 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:10:18,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18 WrapperNode [2020-09-25 03:10:18,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:18,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:10:18,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:10:18,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:10:18,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:10:18,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:10:18,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:10:18,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:10:18,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (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 [2020-09-25 03:10:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:10:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:10:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 03:10:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 03:10:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:10:18,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 03:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 03:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:10:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:10:19,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:10:19,082 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:10:19,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:19 BoogieIcfgContainer [2020-09-25 03:10:19,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:10:19,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:10:19,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:10:19,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:10:19,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:10:18" (1/3) ... [2020-09-25 03:10:19,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:19, skipping insertion in model container [2020-09-25 03:10:19,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:18" (2/3) ... [2020-09-25 03:10:19,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:19, skipping insertion in model container [2020-09-25 03:10:19,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:19" (3/3) ... [2020-09-25 03:10:19,107 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-09-25 03:10:19,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:10:19,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:10:19,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:10:19,193 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:10:19,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:10:19,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:10:19,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:10:19,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:10:19,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:10:19,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:10:19,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:10:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 03:10:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:10:19,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:19,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:19,225 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 03:10:19,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:19,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 03:10:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:19,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:10:19,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:19,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 03:10:19,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:19,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:19,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:19,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:19,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:10:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:19,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:19,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:19,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:19,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:19,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:19,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:10:19,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:10:19,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 03:10:19,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:19,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:19,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611511239] [2020-09-25 03:10:19,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:19,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:19,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:19,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:19,593 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 03:10:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:19,730 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 03:10:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:10:19,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:10:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:19,747 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:10:19,748 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:10:19,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:19,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:10:19,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 03:10:19,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:19,809 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 03:10:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:19,810 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:19,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:19,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:10:19,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:19,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:19,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:10:19,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:19,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:19,815 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 03:10:19,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:19,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611612938] [2020-09-25 03:10:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:19,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:19,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:10:19,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 03:10:19,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:19,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:19,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:19,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:19,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:19,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:20,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 03:10:20,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:20,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:10:20,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611612938] [2020-09-25 03:10:20,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:20,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:20,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605172160] [2020-09-25 03:10:20,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:20,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:20,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:20,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:20,069 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 03:10:20,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:20,157 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 03:10:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:10:20,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:10:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:20,160 INFO L225 Difference]: With dead ends: 50 [2020-09-25 03:10:20,160 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 03:10:20,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 03:10:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 03:10:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:20,172 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 03:10:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:20,173 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:20,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:10:20,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:20,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:20,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:10:20,176 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:20,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 03:10:20,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:20,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022856626] [2020-09-25 03:10:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:10:20,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:20,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-25 03:10:20,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:10:20,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:10:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:20,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:20,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:20,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:21,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:21,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 03:10:21,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:21,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:21,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:21,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:21,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:10:21,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:21,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:10:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:10:21,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022856626] [2020-09-25 03:10:21,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:21,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:10:21,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517550018] [2020-09-25 03:10:21,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:21,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:21,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:21,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:21,276 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 03:10:21,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:21,448 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-09-25 03:10:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:10:21,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:10:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:21,451 INFO L225 Difference]: With dead ends: 69 [2020-09-25 03:10:21,452 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 03:10:21,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 03:10:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-25 03:10:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 03:10:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-09-25 03:10:21,469 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 33 [2020-09-25 03:10:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:21,469 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-09-25 03:10:21,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-09-25 03:10:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:10:21,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:21,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:21,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:10:21,478 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 03:10:21,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:21,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578755303] [2020-09-25 03:10:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:22,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:10:22,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:22,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-25 03:10:22,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:22,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:22,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:22,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:22,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:22,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:22,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:22,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:22,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:10:22,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-09-25 03:10:22,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:22,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 03:10:22,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:22,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:10:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:10:22,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578755303] [2020-09-25 03:10:22,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:22,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:10:22,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076402928] [2020-09-25 03:10:22,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:22,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:22,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:22,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:22,862 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 7 states. [2020-09-25 03:10:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:23,062 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2020-09-25 03:10:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:23,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 03:10:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:23,072 INFO L225 Difference]: With dead ends: 85 [2020-09-25 03:10:23,073 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 03:10:23,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 03:10:23,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-09-25 03:10:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 03:10:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-09-25 03:10:23,116 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 35 [2020-09-25 03:10:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:23,117 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-09-25 03:10:23,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-09-25 03:10:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:10:23,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:23,128 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:23,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:10:23,129 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:23,129 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 03:10:23,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:23,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548890355] [2020-09-25 03:10:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:10:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:10:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:10:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:28,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:28,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:28,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:28,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:32,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4054 [2020-09-25 03:10:32,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:32,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 03:10:32,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:32,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:10:32,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:32,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:10:32,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:32,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:10:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:32,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:10:32,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 03:10:32,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548890355] [2020-09-25 03:10:32,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:32,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:10:32,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104689359] [2020-09-25 03:10:32,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:32,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:32,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:32,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:32,535 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 7 states. [2020-09-25 03:10:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:32,679 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2020-09-25 03:10:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:32,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 03:10:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:32,682 INFO L225 Difference]: With dead ends: 81 [2020-09-25 03:10:32,682 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 03:10:32,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 03:10:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-09-25 03:10:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 03:10:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-09-25 03:10:32,706 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 51 [2020-09-25 03:10:32,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:32,709 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-09-25 03:10:32,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-09-25 03:10:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 03:10:32,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:32,718 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:32,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:10:32,718 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:32,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 03:10:32,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:32,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029647814] [2020-09-25 03:10:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 03:10:37,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:10:37,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 03:10:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 03:10:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:37,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:37,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:37,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:42,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 03:10:42,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:10:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:10:42,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:10:42,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:10:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:43,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 03:10:43,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:43,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:43,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:43,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:43,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:43,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:43,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:43,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:10:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:43,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:43,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 03:10:43,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:43,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:43,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:43,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:43,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:43,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:43,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:43,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 03:10:43,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029647814] [2020-09-25 03:10:43,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:43,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 03:10:43,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845033384] [2020-09-25 03:10:43,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:10:43,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:43,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:10:43,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:10:43,301 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 14 states. [2020-09-25 03:10:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:43,588 INFO L93 Difference]: Finished difference Result 123 states and 164 transitions. [2020-09-25 03:10:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:10:43,589 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-09-25 03:10:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:43,590 INFO L225 Difference]: With dead ends: 123 [2020-09-25 03:10:43,591 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:10:43,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:10:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:10:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 03:10:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:10:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 03:10:43,602 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 67 [2020-09-25 03:10:43,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:43,602 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 03:10:43,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:10:43,602 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 03:10:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:10:43,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:43,604 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:43,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:10:43,604 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:43,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:43,605 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 03:10:43,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:43,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26271984] [2020-09-25 03:10:43,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 03:10:48,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:10:48,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:10:48,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:48,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:48,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 03:10:48,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:48,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:10:53,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:10:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:10:53,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:10:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:10:53,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:10:53,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:53,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:53,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 03:10:53,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:53,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:53,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:10:53,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:53,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:53,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:10:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:54,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 03:10:54,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:54,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:10:54,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:54,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:54,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 03:10:54,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26271984] [2020-09-25 03:10:54,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:54,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:10:54,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925707274] [2020-09-25 03:10:54,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:10:54,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:54,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:10:54,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:54,197 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 12 states. [2020-09-25 03:10:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:54,550 INFO L93 Difference]: Finished difference Result 138 states and 199 transitions. [2020-09-25 03:10:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:10:54,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-09-25 03:10:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:54,552 INFO L225 Difference]: With dead ends: 138 [2020-09-25 03:10:54,552 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 03:10:54,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:10:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 03:10:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2020-09-25 03:10:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 03:10:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2020-09-25 03:10:54,583 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 69 [2020-09-25 03:10:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:54,583 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2020-09-25 03:10:54,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:10:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2020-09-25 03:10:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 03:10:54,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:54,584 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:54,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:10:54,585 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:54,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1745594584, now seen corresponding path program 1 times [2020-09-25 03:10:54,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:54,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450899430] [2020-09-25 03:10:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:59,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 03:10:59,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 03:10:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:10:59,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 03:10:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:59,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:59,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:59,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:59,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:59,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:59,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 03:11:04,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 03:11:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:11:04,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:11:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 03:11:04,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:11:06,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:11:06,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1572 [2020-09-25 03:11:06,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:11:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:11:06,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:11:06,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:11:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:06,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:06,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:06,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:06,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:06,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:11:06,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:06,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:11:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:06,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:11:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 03:11:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:11:06,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 03:11:06,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:11:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:06,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 03:11:06,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:11:06,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:11:06,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:06,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 03:11:06,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450899430] [2020-09-25 03:11:06,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:06,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:11:06,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631901134] [2020-09-25 03:11:06,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:11:06,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:06,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:11:06,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:11:06,604 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand 12 states. [2020-09-25 03:11:07,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:07,005 INFO L93 Difference]: Finished difference Result 196 states and 305 transitions. [2020-09-25 03:11:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:11:07,006 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-09-25 03:11:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:07,010 INFO L225 Difference]: With dead ends: 196 [2020-09-25 03:11:07,010 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 03:11:07,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:11:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 03:11:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2020-09-25 03:11:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 03:11:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2020-09-25 03:11:07,025 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 86 [2020-09-25 03:11:07,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:07,025 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2020-09-25 03:11:07,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:11:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2020-09-25 03:11:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 03:11:07,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:07,027 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:07,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:11:07,028 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:07,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 2 times [2020-09-25 03:11:07,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:07,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149748748] [2020-09-25 03:11:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:12,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 03:11:12,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:11:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:11:12,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 03:11:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:12,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:12,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:12,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking...