/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o100.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:14:47,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:14:47,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:14:47,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:14:47,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:14:47,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:14:47,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:14:47,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:14:47,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:14:47,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:14:47,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:14:47,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:14:47,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:14:47,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:14:47,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:14:47,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:14:47,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:14:47,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:14:47,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:14:47,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:14:47,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:14:47,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:14:47,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:14:47,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:14:47,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:14:47,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:14:47,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:14:47,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:14:47,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:14:47,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:14:47,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:14:47,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:14:47,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:14:47,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:14:47,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:14:47,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:14:47,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:14:47,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:14:47,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:14:47,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:14:47,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:14:47,669 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 [2020-09-24 18:14:47,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:14:47,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:14:47,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:14:47,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:14:47,727 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:14:47,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:14:47,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:14:47,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:14:47,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:14:47,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:14:47,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:14:47,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:14:47,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:14:47,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:14:47,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:14:47,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:14:47,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:14:47,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:14:47,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:14:47,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:14:47,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:14:47,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:14:47,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:14:47,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:14:47,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:14:47,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:14:47,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:14:47,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:14:47,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:14:47,734 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:14:48,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:14:48,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:14:48,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:14:48,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:14:48,266 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:14:48,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-24 18:14:48,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/679195c90/46b40888702b445ab5ffcee6d4589bec/FLAGc22fca066 [2020-09-24 18:14:48,915 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:14:48,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-24 18:14:48,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/679195c90/46b40888702b445ab5ffcee6d4589bec/FLAGc22fca066 [2020-09-24 18:14:49,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/679195c90/46b40888702b445ab5ffcee6d4589bec [2020-09-24 18:14:49,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:14:49,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:14:49,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:14:49,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:14:49,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:14:49,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550d844f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49, skipping insertion in model container [2020-09-24 18:14:49,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:14:49,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:14:49,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:14:49,602 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:14:49,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:14:49,647 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:14:49,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49 WrapperNode [2020-09-24 18:14:49,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:14:49,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:14:49,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:14:49,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:14:49,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (1/1) ... [2020-09-24 18:14:49,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:14:49,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:14:49,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:14:49,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:14:49,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (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 [2020-09-24 18:14:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:14:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:14:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 18:14:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:14:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 18:14:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:14:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 18:14:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:14:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:14:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:14:50,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:14:50,073 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:14:50,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:14:50 BoogieIcfgContainer [2020-09-24 18:14:50,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:14:50,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:14:50,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:14:50,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:14:50,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:14:49" (1/3) ... [2020-09-24 18:14:50,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5535098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:14:50, skipping insertion in model container [2020-09-24 18:14:50,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:14:49" (2/3) ... [2020-09-24 18:14:50,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5535098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:14:50, skipping insertion in model container [2020-09-24 18:14:50,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:14:50" (3/3) ... [2020-09-24 18:14:50,089 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-09-24 18:14:50,101 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:14:50,111 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:14:50,133 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:14:50,166 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:14:50,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:14:50,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:14:50,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:14:50,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:14:50,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:14:50,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:14:50,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:14:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 18:14:50,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:14:50,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:50,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:50,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 18:14:50,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:50,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309993683] [2020-09-24 18:14:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:50,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:50,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:14:50,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 18:14:50,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:14:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:14:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:50,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:50,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:50,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:50,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:50,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:50,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:50,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:50,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:50,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:50,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:50,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:50,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:50,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:14:50,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:14:50,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309993683] [2020-09-24 18:14:50,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:14:50,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:14:50,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186291382] [2020-09-24 18:14:50,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:14:50,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:50,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:14:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:14:50,703 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 18:14:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:50,790 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 18:14:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:14:50,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 18:14:50,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:50,809 INFO L225 Difference]: With dead ends: 37 [2020-09-24 18:14:50,809 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 18:14:50,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:14:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 18:14:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 18:14:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 18:14:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 18:14:50,874 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 18:14:50,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:50,874 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 18:14:50,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:14:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 18:14:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 18:14:50,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:50,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:50,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:14:50,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:50,879 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 18:14:50,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:50,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147409706] [2020-09-24 18:14:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:14:51,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-24 18:14:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:14:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:14:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:51,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:51,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:51,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:51,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:51,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 18:14:51,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:51,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:14:51,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:14:51,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147409706] [2020-09-24 18:14:51,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:51,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:14:51,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487638092] [2020-09-24 18:14:51,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:14:51,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:51,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:14:51,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:14:51,501 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 18:14:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:51,573 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 18:14:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:14:51,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 18:14:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:51,575 INFO L225 Difference]: With dead ends: 31 [2020-09-24 18:14:51,575 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 18:14:51,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 18:14:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 18:14:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 18:14:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 18:14:51,584 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 18:14:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:51,585 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 18:14:51,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:14:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 18:14:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 18:14:51,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:51,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:51,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:14:51,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:51,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 18:14:51,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:51,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548598228] [2020-09-24 18:14:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:51,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:51,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:14:51,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-24 18:14:51,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 18:14:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:14:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:52,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:14:52,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:52,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:52,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 18:14:52,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:52,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:52,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:14:52,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:52,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:52,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:14:52,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:52,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:14:52,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548598228] [2020-09-24 18:14:52,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:52,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:14:52,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990009102] [2020-09-24 18:14:52,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:14:52,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:52,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:14:52,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:52,291 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 18:14:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:52,391 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 18:14:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:14:52,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 18:14:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:52,394 INFO L225 Difference]: With dead ends: 35 [2020-09-24 18:14:52,394 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 18:14:52,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:14:52,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 18:14:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 18:14:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 18:14:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 18:14:52,402 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 18:14:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:52,402 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 18:14:52,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:14:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 18:14:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 18:14:52,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:52,404 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:52,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:14:52,405 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 18:14:52,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:52,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364405138] [2020-09-24 18:14:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:14:52,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-24 18:14:52,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:14:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 18:14:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:14:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:52,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:14:52,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:52,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:52,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:52,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 18:14:52,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:53,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:53,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:53,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 18:14:53,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:53,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:53,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:53,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 18:14:53,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:14:53,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:53,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:53,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:53,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:14:53,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:53,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:53,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 18:14:53,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364405138] [2020-09-24 18:14:53,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:53,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:14:53,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985502844] [2020-09-24 18:14:53,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:14:53,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:53,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:14:53,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:14:53,345 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 18:14:53,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:53,514 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 18:14:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:14:53,515 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 18:14:53,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:53,517 INFO L225 Difference]: With dead ends: 39 [2020-09-24 18:14:53,517 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 18:14:53,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:14:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 18:14:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 18:14:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 18:14:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 18:14:53,525 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 18:14:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:53,526 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 18:14:53,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:14:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 18:14:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 18:14:53,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:53,530 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:53,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:14:53,531 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:53,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 18:14:53,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:53,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972672877] [2020-09-24 18:14:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:53,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:53,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 18:14:53,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:53,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-24 18:14:53,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:14:53,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:14:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:14:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:53,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:53,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:53,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:53,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:53,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:54,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:54,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:14:54,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 18:14:54,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:54,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:14:54,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:54,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:14:54,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:54,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:54,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:54,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:54,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 18:14:54,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:54,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:54,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:54,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 18:14:54,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:54,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:54,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:54,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:54,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:54,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 18:14:54,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:54,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:54,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:54,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:54,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:54,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:14:54,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 18:14:54,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972672877] [2020-09-24 18:14:54,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:54,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:14:54,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344755569] [2020-09-24 18:14:54,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:14:54,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:54,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:14:54,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:14:54,786 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 18:14:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:54,988 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 18:14:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:14:54,989 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 18:14:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:54,991 INFO L225 Difference]: With dead ends: 43 [2020-09-24 18:14:54,991 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 18:14:54,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:14:54,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 18:14:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 18:14:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 18:14:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 18:14:55,009 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 18:14:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:55,012 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 18:14:55,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:14:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 18:14:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:14:55,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:55,014 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:55,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:14:55,017 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:55,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:55,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 18:14:55,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:55,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768735627] [2020-09-24 18:14:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:55,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:55,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 18:14:55,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-24 18:14:55,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:55,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 18:14:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:14:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:14:55,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:14:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:55,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:55,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:55,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:55,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:55,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:55,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:55,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:55,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:14:55,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:55,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-24 18:14:55,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:55,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:14:55,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:55,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:14:55,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:55,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:56,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:56,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:14:56,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:56,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 18:14:56,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:14:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:56,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:14:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:56,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:56,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:56,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:56,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 18:14:56,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:56,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:56,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:56,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:56,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 18:14:56,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:56,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:56,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:56,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:14:56,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:56,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:56,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:56,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:56,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:56,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:14:56,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:56,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:56,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 18:14:56,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768735627] [2020-09-24 18:14:56,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:56,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 18:14:56,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210811295] [2020-09-24 18:14:56,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 18:14:56,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:56,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 18:14:56,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:14:56,697 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 18:14:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:56,988 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 18:14:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 18:14:56,989 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 18:14:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:56,990 INFO L225 Difference]: With dead ends: 47 [2020-09-24 18:14:56,991 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:14:56,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:14:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:14:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:14:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:14:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 18:14:57,006 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 18:14:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:57,009 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 18:14:57,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 18:14:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 18:14:57,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 18:14:57,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:57,013 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:57,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:14:57,013 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:57,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 18:14:57,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:57,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417267589] [2020-09-24 18:14:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:57,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:57,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:57,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:14:57,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-24 18:14:57,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 18:14:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 18:14:57,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:57,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:57,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:57,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:14:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:58,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:58,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:14:58,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-24 18:14:58,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:14:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:14:58,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:58,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:58,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:14:58,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-24 18:14:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:14:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:14:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:58,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:58,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:58,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:14:58,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 18:14:58,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:14:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:14:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:58,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:58,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:58,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:58,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:14:58,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:58,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 18:14:58,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:14:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:14:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:59,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:59,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:59,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:14:59,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 18:14:59,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:14:59,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:59,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:59,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:59,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:14:59,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:59,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:14:59,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:14:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:59,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:14:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:59,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:59,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:59,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:14:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:14:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:14:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-24 18:14:59,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417267589] [2020-09-24 18:14:59,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:59,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 18:14:59,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830521066] [2020-09-24 18:14:59,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 18:14:59,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 18:14:59,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:14:59,308 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 18:14:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:59,606 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 18:14:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:14:59,607 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 18:14:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:59,608 INFO L225 Difference]: With dead ends: 51 [2020-09-24 18:14:59,609 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 18:14:59,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 18:14:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 18:14:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 18:14:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 18:14:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 18:14:59,616 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 18:14:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:59,617 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 18:14:59,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 18:14:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 18:14:59,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 18:14:59,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:59,620 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:59,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:14:59,620 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 18:14:59,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:59,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237287838] [2020-09-24 18:14:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:59,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:15:00,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-24 18:15:00,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 18:15:00,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 18:15:00,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 18:15:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:00,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:00,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:00,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:00,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-24 18:15:00,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:01,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-24 18:15:01,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:01,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:01,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-24 18:15:01,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:01,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 18:15:01,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:01,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:01,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:01,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:01,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:01,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 18:15:01,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:02,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 18:15:02,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:02,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:15:02,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:02,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:02,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:02,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:02,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:15:02,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 18:15:02,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237287838] [2020-09-24 18:15:02,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:02,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 18:15:02,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463519387] [2020-09-24 18:15:02,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 18:15:02,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:02,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 18:15:02,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:15:02,315 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 18:15:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:02,686 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 18:15:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 18:15:02,687 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 18:15:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:02,688 INFO L225 Difference]: With dead ends: 55 [2020-09-24 18:15:02,688 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:15:02,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-24 18:15:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:15:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 18:15:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 18:15:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 18:15:02,705 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 18:15:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:02,706 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 18:15:02,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 18:15:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 18:15:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 18:15:02,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:02,711 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:02,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:15:02,711 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:02,711 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 18:15:02,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:02,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795915671] [2020-09-24 18:15:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 18:15:03,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-09-24 18:15:03,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 18:15:03,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 18:15:03,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:15:03,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:03,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:03,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:03,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:03,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:03,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:04,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:04,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:04,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-24 18:15:04,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:04,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:04,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-24 18:15:04,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:05,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-24 18:15:05,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:05,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:05,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-24 18:15:05,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:05,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 18:15:05,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:05,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:15:05,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:05,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:05,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:05,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:15:05,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:05,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:06,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:06,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:15:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:06,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:06,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:06,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:15:06,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 18:15:06,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795915671] [2020-09-24 18:15:06,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:06,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 18:15:06,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392909196] [2020-09-24 18:15:06,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 18:15:06,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:06,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 18:15:06,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 18:15:06,140 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 18:15:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:06,651 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 18:15:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 18:15:06,651 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 18:15:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:06,653 INFO L225 Difference]: With dead ends: 59 [2020-09-24 18:15:06,654 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:15:06,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-24 18:15:06,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:15:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 18:15:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:15:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 18:15:06,663 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 18:15:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:06,663 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 18:15:06,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 18:15:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 18:15:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 18:15:06,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:06,664 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:06,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:15:06,665 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 18:15:06,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:06,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899063652] [2020-09-24 18:15:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 18:15:07,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-09-24 18:15:07,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 18:15:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 18:15:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:07,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:07,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:07,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:07,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:07,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:07,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:07,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:08,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:08,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:08,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-24 18:15:08,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:08,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:08,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:08,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-24 18:15:08,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:08,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:09,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:09,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:09,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-24 18:15:09,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:09,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:09,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:09,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:09,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:09,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-24 18:15:09,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:09,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:09,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:09,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:09,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 18:15:09,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:09,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:10,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:10,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:10,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:10,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 18:15:10,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:10,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:10,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:10,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:10,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:15:10,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:10,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:10,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:10,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:10,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:10,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:10,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:10,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:15:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:10,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:10,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:10,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:15:10,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:10,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 18:15:10,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899063652] [2020-09-24 18:15:10,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:10,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 18:15:10,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983065284] [2020-09-24 18:15:10,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 18:15:10,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:10,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 18:15:10,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 18:15:10,664 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 18:15:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:11,311 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 18:15:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 18:15:11,311 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 18:15:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:11,312 INFO L225 Difference]: With dead ends: 63 [2020-09-24 18:15:11,312 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:15:11,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 18:15:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:15:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 18:15:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 18:15:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 18:15:11,320 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 18:15:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:11,321 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 18:15:11,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 18:15:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 18:15:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 18:15:11,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:11,322 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:11,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:15:11,322 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:11,323 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 18:15:11,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:11,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109996968] [2020-09-24 18:15:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:12,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:12,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 18:15:12,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-09-24 18:15:12,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 18:15:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 18:15:12,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:15:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:12,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:12,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:12,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:12,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:12,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:12,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:13,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:13,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:15:13,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-09-24 18:15:13,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:15:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:15:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:13,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:13,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:13,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-09-24 18:15:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:14,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:14,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:14,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:14,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-09-24 18:15:14,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:14,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:14,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:14,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:14,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:14,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:14,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-24 18:15:14,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:15,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-24 18:15:15,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:15,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:15,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:15,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:15,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:15,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-24 18:15:15,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:15,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:15,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 18:15:15,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:15,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:15,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 18:15:15,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:15,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:15,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:15,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:15,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:15:15,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:16,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:16,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:16,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:16,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:15:16,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:16,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:16,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:16,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:15:16,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 18:15:16,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109996968] [2020-09-24 18:15:16,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:16,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 18:15:16,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619407487] [2020-09-24 18:15:16,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 18:15:16,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:16,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 18:15:16,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 18:15:16,212 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-24 18:15:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:17,005 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-24 18:15:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 18:15:17,006 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-24 18:15:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:17,008 INFO L225 Difference]: With dead ends: 67 [2020-09-24 18:15:17,008 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 18:15:17,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 18:15:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 18:15:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 18:15:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 18:15:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-24 18:15:17,015 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-24 18:15:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:17,016 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-24 18:15:17,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 18:15:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-24 18:15:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 18:15:17,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:17,017 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:17,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:15:17,017 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:17,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-24 18:15:17,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:17,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521380714] [2020-09-24 18:15:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:18,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:18,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 18:15:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-09-24 18:15:18,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 18:15:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 18:15:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 18:15:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:18,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:18,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:18,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:18,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:18,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:18,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:18,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:19,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:19,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 18:15:19,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-09-24 18:15:19,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 18:15:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 18:15:19,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:19,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:19,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:19,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:15:19,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-09-24 18:15:19,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:15:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:15:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:19,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:20,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-09-24 18:15:20,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:20,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-24 18:15:20,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:21,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:21,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:21,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-24 18:15:21,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:21,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:21,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:21,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:21,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:21,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 18:15:21,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:21,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:22,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:22,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 18:15:22,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:22,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 18:15:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:22,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:22,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 18:15:22,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:22,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:22,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:22,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:15:22,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:22,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:22,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:22,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:22,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:15:22,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:22,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:22,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:22,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:22,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:15:22,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:22,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:22,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-24 18:15:22,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521380714] [2020-09-24 18:15:22,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:22,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 18:15:22,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103966333] [2020-09-24 18:15:22,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 18:15:22,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:22,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 18:15:22,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-24 18:15:22,878 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-24 18:15:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:23,802 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 18:15:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 18:15:23,802 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-24 18:15:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:23,804 INFO L225 Difference]: With dead ends: 71 [2020-09-24 18:15:23,804 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 18:15:23,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 18:15:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 18:15:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 18:15:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 18:15:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-24 18:15:23,813 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-24 18:15:23,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:23,813 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-24 18:15:23,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 18:15:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-24 18:15:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 18:15:23,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:23,814 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:23,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 18:15:23,815 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-24 18:15:23,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:23,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338539865] [2020-09-24 18:15:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:25,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:25,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 18:15:25,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-09-24 18:15:25,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 18:15:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 18:15:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 18:15:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:25,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:25,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:25,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:25,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:25,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:26,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:26,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 18:15:26,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1079 [2020-09-24 18:15:26,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 18:15:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 18:15:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:27,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:27,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 18:15:27,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-09-24 18:15:27,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 18:15:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 18:15:27,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:28,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:28,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:15:28,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-09-24 18:15:28,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:15:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:15:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:28,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:28,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:28,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-09-24 18:15:28,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:28,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:29,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:29,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:29,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-09-24 18:15:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:29,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:29,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:29,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:29,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:29,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-24 18:15:29,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:29,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:30,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:30,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:30,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-24 18:15:30,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:30,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:30,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-24 18:15:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:30,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:30,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:30,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:30,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 18:15:30,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:30,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:30,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:30,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:30,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 18:15:30,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:30,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:30,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:30,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:30,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:31,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:31,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:31,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:31,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:15:31,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:31,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:31,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:31,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:31,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:31,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:31,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:15:31,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:31,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:31,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:31,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:31,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:15:31,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-24 18:15:31,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338539865] [2020-09-24 18:15:31,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:31,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 18:15:31,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241398088] [2020-09-24 18:15:31,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 18:15:31,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:31,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 18:15:31,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-24 18:15:31,432 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-24 18:15:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:32,543 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-24 18:15:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 18:15:32,544 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-24 18:15:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:32,545 INFO L225 Difference]: With dead ends: 75 [2020-09-24 18:15:32,545 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 18:15:32,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 18:15:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 18:15:32,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 18:15:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 18:15:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 18:15:32,559 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-24 18:15:32,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:32,560 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 18:15:32,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 18:15:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 18:15:32,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 18:15:32,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:32,561 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:32,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 18:15:32,562 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:32,562 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-24 18:15:32,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:32,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020312399] [2020-09-24 18:15:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:34,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:34,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 18:15:34,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:34,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-09-24 18:15:34,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:34,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 18:15:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 18:15:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 18:15:34,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:34,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:34,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:34,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:34,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:34,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:34,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:34,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:35,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:35,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 18:15:35,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-09-24 18:15:35,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 18:15:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 18:15:35,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:35,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 18:15:36,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-09-24 18:15:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 18:15:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 18:15:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:36,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:37,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:37,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 18:15:37,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 18:15:37,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 18:15:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 18:15:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:38,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:38,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 18:15:38,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-09-24 18:15:38,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 18:15:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:38,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:15:38,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:38,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:39,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:39,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:15:39,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-09-24 18:15:39,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 18:15:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:15:39,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:39,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:39,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:39,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:15:39,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-24 18:15:39,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 18:15:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:15:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:40,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:40,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 18:15:40,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:40,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-24 18:15:40,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 18:15:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:15:40,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:40,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:40,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:40,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:15:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 18:15:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 18:15:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 18:15:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:40,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:40,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:40,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 18:15:40,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:40,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 18:15:40,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 18:15:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:15:40,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:40,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:40,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:15:40,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 18:15:40,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 18:15:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:15:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:15:41,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 18:15:41,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:15:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:15:41,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:15:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:15:41,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:15:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:15:41,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:15:41,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:15:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:41,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:41,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:15:41,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:15:41,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:15:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:15:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:15:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-24 18:15:41,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020312399] [2020-09-24 18:15:41,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:15:41,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 18:15:41,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842774844] [2020-09-24 18:15:41,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 18:15:41,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:15:41,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 18:15:41,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-24 18:15:41,557 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-24 18:15:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:15:42,750 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 18:15:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-24 18:15:42,751 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-24 18:15:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:15:42,752 INFO L225 Difference]: With dead ends: 79 [2020-09-24 18:15:42,752 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 18:15:42,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 18:15:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 18:15:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 18:15:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 18:15:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-24 18:15:42,760 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-24 18:15:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:15:42,761 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-24 18:15:42,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 18:15:42,761 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-24 18:15:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 18:15:42,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:15:42,762 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:15:42,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 18:15:42,763 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:15:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:15:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-24 18:15:42,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:15:42,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906357305] [2020-09-24 18:15:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:15:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:44,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 18:15:44,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1747 [2020-09-24 18:15:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 18:15:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 18:15:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:15:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:44,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:15:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:44,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:44,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:44,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:15:44,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:44,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:15:44,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:15:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:15:44,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:44,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 18:15:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:15:46,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:15:46,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 18:15:46,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:15:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-09-24 18:15:46,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:15:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 18:15:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:15:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 18:15:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:15:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 18:15:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:15:46,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking...