/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:06:16,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:06:16,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:06:16,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:06:16,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:06:16,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:06:16,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:06:16,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:06:16,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:06:16,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:06:16,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:06:16,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:06:16,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:06:16,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:06:16,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:06:16,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:06:16,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:06:16,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:06:16,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:06:16,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:06:16,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:06:16,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:06:16,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:06:16,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:06:16,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:06:16,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:06:16,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:06:16,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:06:16,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:06:16,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:06:16,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:06:16,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:06:16,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:06:16,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:06:16,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:06:16,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:06:16,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:06:16,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:06:16,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:06:16,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:06:16,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:06:16,780 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 11:06:16,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:06:16,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:06:16,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:06:16,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:06:16,832 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:06:16,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:06:16,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:06:16,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:06:16,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:06:16,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:06:16,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:06:16,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:06:16,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:06:16,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:06:16,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:06:16,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:06:16,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:06:16,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:06:16,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:06:16,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:06:16,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:06:16,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:16,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:06:16,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:06:16,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:06:16,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:06:16,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:06:16,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:06:16,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:06:16,839 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:06:17,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:06:17,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:06:17,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:06:17,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:06:17,352 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:06:17,353 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 11:06:17,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9ca47276/2d06a31b8f09488e997b10178ad32191/FLAGab3e9280a [2020-09-25 11:06:17,999 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:06:18,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 11:06:18,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9ca47276/2d06a31b8f09488e997b10178ad32191/FLAGab3e9280a [2020-09-25 11:06:18,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9ca47276/2d06a31b8f09488e997b10178ad32191 [2020-09-25 11:06:18,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:06:18,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:06:18,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:18,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:06:18,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:06:18,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d7e22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18, skipping insertion in model container [2020-09-25 11:06:18,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:06:18,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:06:18,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:18,615 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:06:18,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:18,654 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:06:18,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18 WrapperNode [2020-09-25 11:06:18,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:18,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:06:18,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:06:18,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:06:18,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (1/1) ... [2020-09-25 11:06:18,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:06:18,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:06:18,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:06:18,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:06:18,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (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 11:06:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:06:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:06:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-25 11:06:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:06:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:06:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:06:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-25 11:06:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:06:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:06:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:06:19,120 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:06:19,121 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:06:19,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:19 BoogieIcfgContainer [2020-09-25 11:06:19,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:06:19,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:06:19,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:06:19,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:06:19,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:06:18" (1/3) ... [2020-09-25 11:06:19,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bbd778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:19, skipping insertion in model container [2020-09-25 11:06:19,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:18" (2/3) ... [2020-09-25 11:06:19,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bbd778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:19, skipping insertion in model container [2020-09-25 11:06:19,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:19" (3/3) ... [2020-09-25 11:06:19,141 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-25 11:06:19,156 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:06:19,168 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:06:19,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:06:19,237 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:06:19,237 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:06:19,237 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:06:19,238 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:06:19,238 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:06:19,238 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:06:19,238 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:06:19,238 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:06:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:06:19,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 11:06:19,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:19,279 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-25 11:06:19,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:19,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-09-25 11:06:19,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:19,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517011092] [2020-09-25 11:06:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:20,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:06:20,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:20,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-09-25 11:06:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:20,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:06:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:06:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:20,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:20,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:20,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:20,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:20,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:20,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:20,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:20,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:20,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:06:20,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:20,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:06:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:20,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:20,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:06:20,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:20,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:20,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 11:06:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 11:06:20,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517011092] [2020-09-25 11:06:20,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:20,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:06:20,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123028499] [2020-09-25 11:06:20,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:20,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:20,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:20,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:20,660 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:06:20,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:20,829 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 11:06:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:20,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-25 11:06:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:20,852 INFO L225 Difference]: With dead ends: 64 [2020-09-25 11:06:20,852 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 11:06:20,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 11:06:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 11:06:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 11:06:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 11:06:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 11:06:20,933 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-09-25 11:06:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:20,934 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 11:06:20,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 11:06:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 11:06:20,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:20,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-25 11:06:20,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:06:20,940 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:20,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:20,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1309951713, now seen corresponding path program 1 times [2020-09-25 11:06:20,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:20,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243913148] [2020-09-25 11:06:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:21,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 11:06:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 11:06:21,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:21,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:06:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:06:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:21,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:21,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:21,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:21,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:21,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:21,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:21,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:21,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:21,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:06:21,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:21,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:21,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:21,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:21,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:21,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:21,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:06:21,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:21,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:21,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:21,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:21,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 11:06:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:21,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:21,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:06:21,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:21,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:21,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 11:06:21,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243913148] [2020-09-25 11:06:21,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:21,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:21,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343382498] [2020-09-25 11:06:21,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:21,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:21,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:21,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:21,175 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2020-09-25 11:06:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:21,255 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-09-25 11:06:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:21,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-25 11:06:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:21,258 INFO L225 Difference]: With dead ends: 51 [2020-09-25 11:06:21,258 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 11:06:21,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 11:06:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 11:06:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 11:06:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 11:06:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-25 11:06:21,270 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 46 [2020-09-25 11:06:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:21,271 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-25 11:06:21,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:21,271 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-25 11:06:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 11:06:21,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:21,274 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:21,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:06:21,275 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash -793708719, now seen corresponding path program 1 times [2020-09-25 11:06:21,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:21,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037186979] [2020-09-25 11:06:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:06:23,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:06:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2030 [2020-09-25 11:06:23,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:06:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:06:23,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:23,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:23,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:23,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:06:23,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:23,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:23,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:06:23,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 11:06:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-25 11:06:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:06:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:06:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:23,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:23,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:23,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:06:23,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:23,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:23,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:24,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:06:24,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:24,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 11:06:24,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037186979] [2020-09-25 11:06:24,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:24,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:06:24,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149700784] [2020-09-25 11:06:24,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:24,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:24,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:24,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:24,021 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-25 11:06:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:24,095 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-09-25 11:06:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:24,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-25 11:06:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:24,098 INFO L225 Difference]: With dead ends: 79 [2020-09-25 11:06:24,098 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 11:06:24,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 11:06:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 11:06:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2020-09-25 11:06:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:06:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-09-25 11:06:24,109 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 65 [2020-09-25 11:06:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:24,110 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-09-25 11:06:24,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-09-25 11:06:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 11:06:24,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:24,113 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1] [2020-09-25 11:06:24,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:06:24,113 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:24,114 INFO L82 PathProgramCache]: Analyzing trace with hash 942191350, now seen corresponding path program 2 times [2020-09-25 11:06:24,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:24,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43481324] [2020-09-25 11:06:24,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:06:24,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-09-25 11:06:24,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:06:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:06:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:06:24,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:24,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:24,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:24,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:24,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 11:06:24,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:24,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:25,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:25,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:25,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:25,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 11:06:25,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:25,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:25,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:25,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:25,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:25,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 11:06:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:25,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:25,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 11:06:25,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:25,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:25,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:25,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:25,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:25,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 11:06:25,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:25,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:06:25,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43481324] [2020-09-25 11:06:25,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:25,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 11:06:25,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091734715] [2020-09-25 11:06:25,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 11:06:25,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:25,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 11:06:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:06:25,745 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 17 states. [2020-09-25 11:06:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:26,368 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-09-25 11:06:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:06:26,369 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 11:06:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:26,370 INFO L225 Difference]: With dead ends: 68 [2020-09-25 11:06:26,371 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 11:06:26,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-09-25 11:06:26,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 11:06:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-09-25 11:06:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 11:06:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-09-25 11:06:26,383 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 56 [2020-09-25 11:06:26,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:26,384 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-09-25 11:06:26,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 11:06:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-09-25 11:06:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 11:06:26,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:26,386 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:26,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:06:26,386 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash -156864787, now seen corresponding path program 2 times [2020-09-25 11:06:26,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:26,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673474016] [2020-09-25 11:06:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:06:29,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:06:29,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2737 [2020-09-25 11:06:29,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 11:06:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:29,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 11:06:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:29,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:29,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:29,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:29,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:29,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:29,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 11:06:29,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:29,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 11:06:29,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 11:06:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:30,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:06:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-09-25 11:06:30,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:30,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:06:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 11:06:30,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:30,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:06:30,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 11:06:30,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673474016] [2020-09-25 11:06:30,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:30,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:06:30,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666736120] [2020-09-25 11:06:30,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:06:30,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:30,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:06:30,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:06:30,423 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 16 states. [2020-09-25 11:06:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:30,995 INFO L93 Difference]: Finished difference Result 104 states and 128 transitions. [2020-09-25 11:06:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:06:30,995 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-09-25 11:06:30,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:30,998 INFO L225 Difference]: With dead ends: 104 [2020-09-25 11:06:30,998 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 11:06:31,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:06:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 11:06:31,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-25 11:06:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 11:06:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-09-25 11:06:31,020 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 65 [2020-09-25 11:06:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:31,020 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-09-25 11:06:31,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:06:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-09-25 11:06:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 11:06:31,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:31,022 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:06:31,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:06:31,026 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:31,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:31,026 INFO L82 PathProgramCache]: Analyzing trace with hash 387973505, now seen corresponding path program 3 times [2020-09-25 11:06:31,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:31,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449645227] [2020-09-25 11:06:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:31,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:31,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:31,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:06:31,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-09-25 11:06:31,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:31,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 11:06:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 11:06:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:31,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:31,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:31,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:31,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:31,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:31,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:31,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:31,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:32,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:32,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:32,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 11:06:32,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:32,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:32,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:06:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:32,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 11:06:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:32,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 11:06:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:32,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:32,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:32,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:32,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:32,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:06:32,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:32,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:32,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:32,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:06:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 11:06:32,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449645227] [2020-09-25 11:06:32,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:32,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 11:06:32,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146897684] [2020-09-25 11:06:32,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 11:06:32,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:32,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 11:06:32,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:06:32,837 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 18 states. [2020-09-25 11:06:33,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:33,439 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-09-25 11:06:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:06:33,439 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 11:06:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:33,441 INFO L225 Difference]: With dead ends: 73 [2020-09-25 11:06:33,441 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 11:06:33,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:06:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 11:06:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 11:06:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:06:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 11:06:33,461 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 66 [2020-09-25 11:06:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:33,461 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 11:06:33,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 11:06:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 11:06:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 11:06:33,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:33,464 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 11:06:33,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:06:33,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:33,465 INFO L82 PathProgramCache]: Analyzing trace with hash 681092950, now seen corresponding path program 4 times [2020-09-25 11:06:33,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:33,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112818732] [2020-09-25 11:06:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 11:06:34,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-09-25 11:06:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 11:06:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:06:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-09-25 11:06:34,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:34,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:34,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:34,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:34,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:34,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 11:06:34,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:06:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:34,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:34,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:34,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:34,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:34,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:34,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:06:34,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:34,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:34,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:34,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:34,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:34,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 11:06:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:35,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:35,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:35,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-09-25 11:06:35,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:35,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:06:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:06:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:35,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:35,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:35,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:35,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:35,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 11:06:35,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:35,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:35,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:35,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:35,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:35,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:35,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:35,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:35,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 11:06:35,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:35,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:35,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:35,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:35,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 11:06:35,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:35,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 11:06:36,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112818732] [2020-09-25 11:06:36,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:36,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 11:06:36,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446008132] [2020-09-25 11:06:36,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 11:06:36,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:36,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 11:06:36,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:06:36,024 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 21 states. [2020-09-25 11:06:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:36,900 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-09-25 11:06:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:06:36,901 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 76 [2020-09-25 11:06:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:36,902 INFO L225 Difference]: With dead ends: 78 [2020-09-25 11:06:36,903 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 11:06:36,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 11:06:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 11:06:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2020-09-25 11:06:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:06:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 11:06:36,921 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 76 [2020-09-25 11:06:36,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:36,923 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 11:06:36,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 11:06:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 11:06:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:06:36,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:36,925 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 11:06:36,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:06:36,925 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:36,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1857769359, now seen corresponding path program 3 times [2020-09-25 11:06:36,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:36,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437617371] [2020-09-25 11:06:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:40,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:41,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 11:06:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:06:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:06:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:41,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:06:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 11:06:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:41,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:41,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:41,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:41,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:41,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:41,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:41,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:41,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:41,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:06:41,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:41,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:42,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:42,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:42,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:42,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:06:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:42,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:42,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 11:06:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:42,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:44,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:44,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:06:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:06:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2759 [2020-09-25 11:06:44,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:44,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:06:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:06:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:44,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:06:45,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:06:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-09-25 11:06:45,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:06:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:06:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:46,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:46,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:06:46,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-25 11:06:46,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:46,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:46,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:46,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:46,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:46,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:06:46,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:46,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:46,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:46,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:46,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:46,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:46,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:46,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:46,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:46,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:46,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:46,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 50 proven. 22 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 11:06:46,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437617371] [2020-09-25 11:06:46,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:46,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:06:46,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698020501] [2020-09-25 11:06:46,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:06:46,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:46,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:06:46,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:06:46,683 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 9 states. [2020-09-25 11:06:46,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:46,814 INFO L93 Difference]: Finished difference Result 109 states and 136 transitions. [2020-09-25 11:06:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:06:46,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-09-25 11:06:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:46,817 INFO L225 Difference]: With dead ends: 109 [2020-09-25 11:06:46,817 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 11:06:46,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:06:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 11:06:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-09-25 11:06:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 11:06:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-09-25 11:06:46,825 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 85 [2020-09-25 11:06:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:46,825 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-09-25 11:06:46,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:06:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-09-25 11:06:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 11:06:46,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:46,826 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:06:46,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:06:46,827 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:46,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:46,827 INFO L82 PathProgramCache]: Analyzing trace with hash -516505397, now seen corresponding path program 5 times [2020-09-25 11:06:46,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:46,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018412034] [2020-09-25 11:06:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:47,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 11:06:47,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:47,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-09-25 11:06:47,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:47,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 11:06:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 11:06:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:47,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:47,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:47,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:47,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:47,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:47,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:47,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:47,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 11:06:47,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:47,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:47,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:47,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:47,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:06:47,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:47,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:47,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:47,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:47,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:47,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:06:47,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:47,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:47,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:48,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 11:06:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:48,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:48,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:48,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:48,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:06:48,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:48,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:48,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:48,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:48,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:48,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:48,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:48,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:06:48,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:48,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 11:06:48,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018412034] [2020-09-25 11:06:48,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:48,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 11:06:48,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081215381] [2020-09-25 11:06:48,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 11:06:48,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:48,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 11:06:48,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:06:48,292 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 18 states. [2020-09-25 11:06:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:49,020 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-09-25 11:06:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:06:49,020 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 11:06:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:49,023 INFO L225 Difference]: With dead ends: 73 [2020-09-25 11:06:49,023 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 11:06:49,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:06:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 11:06:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 11:06:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:06:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 11:06:49,031 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 66 [2020-09-25 11:06:49,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:49,032 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 11:06:49,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 11:06:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 11:06:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 11:06:49,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:49,033 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 11:06:49,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:06:49,033 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:49,034 INFO L82 PathProgramCache]: Analyzing trace with hash -972388074, now seen corresponding path program 6 times [2020-09-25 11:06:49,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:49,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254732233] [2020-09-25 11:06:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 11:06:50,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-25 11:06:50,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 11:06:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:06:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:50,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:50,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:50,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:50,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 11:06:50,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:50,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 11:06:50,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:50,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:50,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:06:50,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:50,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:50,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 11:06:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:50,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 11:06:50,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:50,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:50,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:50,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 11:06:50,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:51,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:06:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:51,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 11:06:51,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254732233] [2020-09-25 11:06:51,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:51,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:06:51,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965959201] [2020-09-25 11:06:51,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:06:51,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:51,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:06:51,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:06:51,042 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 16 states. [2020-09-25 11:06:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:51,565 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-09-25 11:06:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:06:51,566 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-09-25 11:06:51,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:51,569 INFO L225 Difference]: With dead ends: 73 [2020-09-25 11:06:51,569 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 11:06:51,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-09-25 11:06:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 11:06:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 11:06:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:06:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-09-25 11:06:51,584 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 76 [2020-09-25 11:06:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:51,584 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-09-25 11:06:51,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:06:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-09-25 11:06:51,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 11:06:51,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:51,587 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 11:06:51,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:06:51,587 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:51,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:51,588 INFO L82 PathProgramCache]: Analyzing trace with hash -27101013, now seen corresponding path program 7 times [2020-09-25 11:06:51,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:51,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717503583] [2020-09-25 11:06:51,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:52,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:52,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 11:06:52,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:52,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-09-25 11:06:52,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:52,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 11:06:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:06:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:52,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:52,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:52,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:52,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:52,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:52,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:52,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 11:06:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:52,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:53,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:53,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:53,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:53,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 11:06:53,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:53,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:53,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:53,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:53,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:53,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:53,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:06:53,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:53,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:53,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:53,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:53,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 11:06:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:53,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:53,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:53,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-09-25 11:06:53,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:53,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:06:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:53,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:06:53,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:53,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:53,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:53,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:53,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:53,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 11:06:53,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:53,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:53,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:53,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:54,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:54,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:54,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 11:06:54,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:54,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:54,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:54,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:54,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:06:54,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:54,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 92 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 11:06:54,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717503583] [2020-09-25 11:06:54,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:54,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 11:06:54,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345059824] [2020-09-25 11:06:54,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 11:06:54,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:54,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 11:06:54,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:06:54,209 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 22 states. [2020-09-25 11:06:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:55,146 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2020-09-25 11:06:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:06:55,147 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-09-25 11:06:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:55,148 INFO L225 Difference]: With dead ends: 78 [2020-09-25 11:06:55,148 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 11:06:55,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 11:06:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 11:06:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-25 11:06:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 11:06:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-09-25 11:06:55,156 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 86 [2020-09-25 11:06:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:55,157 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-09-25 11:06:55,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 11:06:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-09-25 11:06:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 11:06:55,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:55,158 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 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] [2020-09-25 11:06:55,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:06:55,159 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:55,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:55,159 INFO L82 PathProgramCache]: Analyzing trace with hash -694157514, now seen corresponding path program 8 times [2020-09-25 11:06:55,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:55,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792137559] [2020-09-25 11:06:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 11:06:56,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-09-25 11:06:56,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 11:06:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:06:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 11:06:56,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:56,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:56,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:56,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:06:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:56,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 11:06:56,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:06:56,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:56,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:56,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:56,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 11:06:56,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:57,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:57,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 11:06:57,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 11:06:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:06:57,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 11:06:57,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 11:06:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:06:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:57,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:58,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-25 11:06:58,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:06:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:06:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:06:58,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 11:06:58,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:06:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:06:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:58,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 11:06:58,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:06:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:58,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:06:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:06:58,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:58,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:06:58,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:06:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:06:58,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 11:06:58,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792137559] [2020-09-25 11:06:58,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:58,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 11:06:58,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626162112] [2020-09-25 11:06:58,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 11:06:58,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:58,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 11:06:58,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-09-25 11:06:58,804 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 24 states. [2020-09-25 11:07:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:00,252 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2020-09-25 11:07:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 11:07:00,252 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2020-09-25 11:07:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:00,254 INFO L225 Difference]: With dead ends: 83 [2020-09-25 11:07:00,255 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 11:07:00,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 11:07:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 11:07:00,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-09-25 11:07:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 11:07:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2020-09-25 11:07:00,265 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 96 [2020-09-25 11:07:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:00,266 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2020-09-25 11:07:00,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 11:07:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2020-09-25 11:07:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 11:07:00,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:00,267 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 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] [2020-09-25 11:07:00,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:07:00,268 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1979672437, now seen corresponding path program 9 times [2020-09-25 11:07:00,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:00,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352509262] [2020-09-25 11:07:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:07:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 11:07:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:02,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:02,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:02,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:02,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:02,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 11:07:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:07:02,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:07:02,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:07:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:07:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:02,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:07:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:02,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 11:07:02,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:07:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:07:02,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:07:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:07:02,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 11:07:02,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:07:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:07:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 11:07:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:03,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 11:07:03,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:03,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-09-25 11:07:03,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:03,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 11:07:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:07:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:07:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:07:03,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 11:07:03,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:03,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 11:07:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:07:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:07:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:07:04,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:04,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 11:07:04,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:07:04,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:04,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:07:04,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:04,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:07:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 11:07:04,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 11:07:04,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:07:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:07:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 11:07:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 11:07:04,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:04,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:07:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:07:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0