/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_i20_o20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:31:51,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:31:51,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:31:51,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:31:51,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:31:51,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:31:51,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:31:51,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:31:51,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:31:51,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:31:51,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:31:51,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:31:51,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:31:51,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:31:51,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:31:51,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:31:51,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:31:51,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:31:51,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:31:51,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:31:51,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:31:51,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:31:51,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:31:51,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:31:51,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:31:51,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:31:51,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:31:51,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:31:51,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:31:51,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:31:51,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:31:51,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:31:51,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:31:51,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:31:51,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:31:51,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:31:51,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:31:51,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:31:51,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:31:51,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:31:51,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:31:51,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:31:51,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:31:51,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:31:51,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:31:51,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:31:51,822 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:31:51,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:31:51,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:31:51,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:31:51,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:31:51,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:31:51,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:31:51,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:31:51,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:31:51,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:31:51,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:31:51,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:31:51,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:31:51,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:31:51,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:31:51,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:31:51,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:31:51,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:31:51,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:31:51,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:31:51,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:31:51,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:31:51,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:31:51,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:31:51,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:31:51,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:31:52,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:31:52,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:31:52,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:31:52,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:31:52,409 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:31:52,410 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i20_o20-2.c [2020-09-25 14:31:52,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0889c983f/37391df7f38642d595b00b2b8a4c729d/FLAGc585fe1ed [2020-09-25 14:31:53,055 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:31:53,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i20_o20-2.c [2020-09-25 14:31:53,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0889c983f/37391df7f38642d595b00b2b8a4c729d/FLAGc585fe1ed [2020-09-25 14:31:53,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0889c983f/37391df7f38642d595b00b2b8a4c729d [2020-09-25 14:31:53,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:31:53,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:31:53,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:31:53,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:31:53,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:31:53,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53, skipping insertion in model container [2020-09-25 14:31:53,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:31:53,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:31:53,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:31:53,709 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:31:53,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:31:53,751 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:31:53,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53 WrapperNode [2020-09-25 14:31:53,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:31:53,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:31:53,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:31:53,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:31:53,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (1/1) ... [2020-09-25 14:31:53,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:31:53,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:31:53,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:31:53,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:31:53,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:31:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:31:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:31:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 14:31:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:31:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:31:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:31:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 14:31:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:31:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:31:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:31:54,225 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:31:54,226 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:31:54,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:31:54 BoogieIcfgContainer [2020-09-25 14:31:54,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:31:54,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:31:54,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:31:54,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:31:54,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:31:53" (1/3) ... [2020-09-25 14:31:54,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3b609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:31:54, skipping insertion in model container [2020-09-25 14:31:54,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:53" (2/3) ... [2020-09-25 14:31:54,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e3b609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:31:54, skipping insertion in model container [2020-09-25 14:31:54,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:31:54" (3/3) ... [2020-09-25 14:31:54,242 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i20_o20-2.c [2020-09-25 14:31:54,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:31:54,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:31:54,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:31:54,318 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:31:54,318 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:31:54,318 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:31:54,318 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:31:54,319 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:31:54,319 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:31:54,319 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:31:54,319 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:31:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 14:31:54,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:31:54,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:54,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:54,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 14:31:54,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:54,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509561441] [2020-09-25 14:31:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:54,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:54,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:31:54,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:54,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 14:31:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:54,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:31:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:31:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:54,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:54,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:54,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:54,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:54,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:54,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:54,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:54,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:54,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:54,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:31:54,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:54,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:54,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:31:54,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509561441] [2020-09-25 14:31:54,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:31:54,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:31:54,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070463] [2020-09-25 14:31:54,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:31:54,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:54,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:31:54,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:31:54,902 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 14:31:55,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:55,102 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 14:31:55,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:31:55,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:31:55,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:55,124 INFO L225 Difference]: With dead ends: 37 [2020-09-25 14:31:55,124 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 14:31:55,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:31:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 14:31:55,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 14:31:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 14:31:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 14:31:55,192 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 14:31:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:55,192 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 14:31:55,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:31:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 14:31:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 14:31:55,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:55,196 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, 1] [2020-09-25 14:31:55,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:31:55,196 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:55,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 14:31:55,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:55,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020124311] [2020-09-25 14:31:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 14:31:55,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:55,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 14:31:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:31:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:31:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:31:55,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:31:55,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:31:55,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:55,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 14:31:55,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:31:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:55,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:55,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:31:55,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:31:55,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020124311] [2020-09-25 14:31:55,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:55,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:31:55,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490606732] [2020-09-25 14:31:55,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:31:55,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:55,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:31:55,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:31:55,904 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 14:31:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:55,994 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 14:31:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:31:55,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 14:31:55,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:55,996 INFO L225 Difference]: With dead ends: 34 [2020-09-25 14:31:55,997 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 14:31:55,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 14:31:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 14:31:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 14:31:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 14:31:56,006 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 14:31:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:56,007 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 14:31:56,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:31:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 14:31:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 14:31:56,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:56,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:56,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:31:56,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:56,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:56,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 14:31:56,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:56,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159180106] [2020-09-25 14:31:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:31:56,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:56,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-09-25 14:31:56,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:56,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 14:31:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:31:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:56,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:31:56,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:31:56,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:56,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:31:56,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:31:56,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 14:31:56,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:31:56,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:56,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:31:56,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:56,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:31:56,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159180106] [2020-09-25 14:31:56,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:56,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:31:56,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240185904] [2020-09-25 14:31:56,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:31:56,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:56,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:31:56,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:56,832 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 14:31:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:56,909 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 14:31:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:31:56,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 14:31:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:56,911 INFO L225 Difference]: With dead ends: 39 [2020-09-25 14:31:56,911 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 14:31:56,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:31:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 14:31:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 14:31:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 14:31:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 14:31:56,920 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 14:31:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:56,920 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 14:31:56,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:31:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 14:31:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 14:31:56,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:56,922 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:56,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:31:56,923 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:56,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:56,923 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 14:31:56,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:56,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500186881] [2020-09-25 14:31:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:57,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-09-25 14:31:57,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:57,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:31:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 14:31:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:31:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:57,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:57,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:57,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:57,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:57,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:57,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:57,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:57,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:31:57,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:57,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 14:31:57,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:57,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:31:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:57,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:57,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:31:58,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 14:31:58,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:31:58,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:31:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:31:58,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:31:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:31:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:58,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:31:58,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 14:31:58,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500186881] [2020-09-25 14:31:58,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:58,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:31:58,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223828826] [2020-09-25 14:31:58,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:31:58,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:58,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:31:58,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:31:58,233 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 14:31:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:58,330 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 14:31:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:31:58,330 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 14:31:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:58,332 INFO L225 Difference]: With dead ends: 44 [2020-09-25 14:31:58,332 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 14:31:58,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:31:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 14:31:58,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 14:31:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 14:31:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 14:31:58,341 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 14:31:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:58,342 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 14:31:58,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:31:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 14:31:58,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 14:31:58,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:58,344 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:58,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:31:58,345 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:58,345 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 14:31:58,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:58,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474664190] [2020-09-25 14:31:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:59,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:59,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:31:59,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1525 [2020-09-25 14:31:59,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:59,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:59,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:31:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 14:31:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:31:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:59,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:59,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:59,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:59,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:59,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:59,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:59,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:59,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:59,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:59,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:00,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:00,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:00,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 14:32:00,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:00,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:00,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:00,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:00,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:00,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:00,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:00,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 14:32:00,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:00,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:00,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:00,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:00,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:00,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:00,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:00,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 14:32:00,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:00,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:00,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:32:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:00,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:00,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:00,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:32:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:00,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:00,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:00,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:00,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:32:00,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:00,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:32:00,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474664190] [2020-09-25 14:32:00,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:00,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:32:00,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360829506] [2020-09-25 14:32:00,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:32:00,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:32:00,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:32:00,610 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 14:32:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:00,772 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 14:32:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:32:00,772 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 14:32:00,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:00,776 INFO L225 Difference]: With dead ends: 49 [2020-09-25 14:32:00,777 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 14:32:00,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:32:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 14:32:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 14:32:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 14:32:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 14:32:00,790 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 14:32:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:00,791 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 14:32:00,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:32:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 14:32:00,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 14:32:00,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:00,796 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:00,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:32:00,797 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:00,797 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 14:32:00,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:00,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860579293] [2020-09-25 14:32:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:00,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:02,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:02,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:32:02,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:02,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2129 [2020-09-25 14:32:02,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:02,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:32:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:32:02,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:32:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:02,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:02,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:02,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:02,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:02,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:02,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:02,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:03,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:03,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:03,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:03,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 14:32:03,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:03,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:03,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:03,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:03,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:03,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:03,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 14:32:03,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:03,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:03,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:03,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:03,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 14:32:03,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:03,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:03,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:03,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:03,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 14:32:03,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:03,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:03,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:03,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:03,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:03,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:03,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:32:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:03,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:03,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:03,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:03,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:32:03,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:03,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:03,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:03,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 14:32:03,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860579293] [2020-09-25 14:32:03,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:03,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:32:03,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652846544] [2020-09-25 14:32:03,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:32:03,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:32:03,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:32:03,845 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 14:32:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:04,013 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 14:32:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 14:32:04,013 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 14:32:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:04,015 INFO L225 Difference]: With dead ends: 54 [2020-09-25 14:32:04,015 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 14:32:04,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:32:04,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 14:32:04,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 14:32:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 14:32:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 14:32:04,024 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 14:32:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:04,024 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 14:32:04,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:32:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 14:32:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 14:32:04,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:04,027 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:04,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:32:04,027 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:04,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:04,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 14:32:04,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:04,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944126925] [2020-09-25 14:32:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:04,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:06,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:06,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:32:06,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2700 [2020-09-25 14:32:06,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:06,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:32:06,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 14:32:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:32:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:06,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:06,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:06,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:06,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:06,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:06,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:06,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:07,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:07,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:07,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 14:32:07,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:07,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:32:07,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:07,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:07,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:07,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:07,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 14:32:07,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:07,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:07,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:07,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:07,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:07,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 14:32:07,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:07,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:07,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:07,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:07,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:07,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 14:32:07,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:07,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:07,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:07,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:07,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:07,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:07,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:07,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 14:32:07,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:07,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:07,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:07,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:07,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:07,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:07,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:32:07,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:07,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:07,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:07,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:07,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:07,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:07,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:32:07,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:07,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:07,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 14:32:07,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944126925] [2020-09-25 14:32:07,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:07,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:32:07,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846420912] [2020-09-25 14:32:07,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:32:07,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:07,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:32:07,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:32:07,920 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 14:32:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:08,081 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 14:32:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 14:32:08,082 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 14:32:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:08,084 INFO L225 Difference]: With dead ends: 59 [2020-09-25 14:32:08,084 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 14:32:08,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 14:32:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 14:32:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 14:32:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 14:32:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 14:32:08,092 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 14:32:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:08,093 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 14:32:08,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:32:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 14:32:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 14:32:08,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:08,095 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:08,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:32:08,096 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:08,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:08,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 14:32:08,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:08,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085901241] [2020-09-25 14:32:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:11,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:11,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 14:32:11,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3524 [2020-09-25 14:32:11,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:11,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:32:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:32:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:32:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:11,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:11,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:11,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:11,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:11,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:12,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:12,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:12,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 14:32:12,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:12,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:32:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:32:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:32:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:12,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:12,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:12,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:12,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 14:32:12,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:12,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:12,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:32:12,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:12,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:12,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:12,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:12,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 14:32:12,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:12,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:32:12,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:12,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:12,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:12,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:12,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 14:32:12,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:12,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:12,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:32:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:12,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:12,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:12,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:12,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:12,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 14:32:12,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:12,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:32:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:13,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:13,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:13,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 14:32:13,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:13,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:32:13,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:13,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:13,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:13,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:32:13,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:13,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:32:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:13,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:13,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:32:13,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:13,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:32:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 7 proven. 131 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-25 14:32:13,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085901241] [2020-09-25 14:32:13,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:13,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:32:13,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565716477] [2020-09-25 14:32:13,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:32:13,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:13,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:32:13,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:32:13,239 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 14 states. [2020-09-25 14:32:13,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:13,462 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 14:32:13,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:32:13,463 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 14:32:13,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:13,464 INFO L225 Difference]: With dead ends: 64 [2020-09-25 14:32:13,464 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 14:32:13,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:32:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 14:32:13,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 14:32:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 14:32:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 14:32:13,472 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 14:32:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:13,472 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 14:32:13,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:32:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 14:32:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 14:32:13,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:13,480 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:13,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:32:13,480 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:13,481 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 14:32:13,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:13,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355765181] [2020-09-25 14:32:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 14:32:17,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:17,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4399 [2020-09-25 14:32:17,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:32:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 14:32:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 14:32:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:17,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:17,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:32:17,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:17,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:18,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:32:18,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 14:32:18,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:18,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:32:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:18,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:18,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:18,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:18,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 14:32:18,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:18,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:32:18,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:18,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:18,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:18,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 14:32:18,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:18,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:18,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:32:18,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:19,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:19,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:19,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:19,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 14:32:19,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:19,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:19,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:19,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 14:32:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:19,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:19,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:19,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:19,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:19,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 14:32:19,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:19,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:19,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:19,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:19,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:19,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:19,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 14:32:19,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:19,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:19,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:19,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:19,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:32:19,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:19,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:19,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:19,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:19,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:19,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:19,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:19,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:32:19,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:19,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 14:32:19,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355765181] [2020-09-25 14:32:19,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:19,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 14:32:19,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847673423] [2020-09-25 14:32:19,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 14:32:19,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:19,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 14:32:19,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:32:19,695 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 14:32:19,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:19,853 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 14:32:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 14:32:19,853 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 14:32:19,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:19,855 INFO L225 Difference]: With dead ends: 69 [2020-09-25 14:32:19,855 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 14:32:19,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 14:32:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 14:32:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 14:32:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 14:32:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 14:32:19,862 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 14:32:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:19,863 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 14:32:19,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 14:32:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 14:32:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 14:32:19,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:19,864 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:19,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:32:19,865 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:19,865 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 14:32:19,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:19,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140287450] [2020-09-25 14:32:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 14:32:24,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:32:24,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:32:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 14:32:24,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:32:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:32:24,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:24,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:32:25,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 14:32:25,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:32:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:25,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:32:25,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-25 14:32:25,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:32:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:26,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 14:32:26,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:32:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:26,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:26,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 14:32:26,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:32:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:26,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 14:32:26,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:26,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 14:32:26,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:26,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:26,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:32:26,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:26,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:26,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:26,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:26,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:26,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:26,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:26,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 14:32:26,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:26,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:27,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:27,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:32:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:27,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:27,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:27,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:27,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:27,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:32:27,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:27,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 14:32:27,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140287450] [2020-09-25 14:32:27,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:27,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 14:32:27,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254513481] [2020-09-25 14:32:27,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 14:32:27,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:27,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 14:32:27,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:32:27,184 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 14:32:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:27,379 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 14:32:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 14:32:27,379 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 14:32:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:27,380 INFO L225 Difference]: With dead ends: 74 [2020-09-25 14:32:27,381 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 14:32:27,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 14:32:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 14:32:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 14:32:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 14:32:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 14:32:27,388 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 14:32:27,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:27,389 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 14:32:27,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 14:32:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 14:32:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 14:32:27,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:27,390 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:27,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:32:27,391 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:27,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:27,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 14:32:27,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:27,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635946538] [2020-09-25 14:32:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:32:32,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:32:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 14:32:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:32:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:32,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 14:32:32,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-25 14:32:32,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 14:32:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:32:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:32:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:33,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:33,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:32:33,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:33,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 14:32:33,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:33,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:32:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 14:32:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:33,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:32:33,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-25 14:32:33,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:33,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 14:32:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:33,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:34,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:34,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:34,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 14:32:34,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:34,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:32:34,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:34,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:34,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:34,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 14:32:34,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:34,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:32:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:34,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:34,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 14:32:34,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:34,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:32:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:34,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:34,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:34,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 14:32:34,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:34,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:32:34,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:34,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:35,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:35,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 14:32:35,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:35,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:32:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:35,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:35,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 14:32:35,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:35,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:35,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:32:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:35,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:35,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:32:35,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:35,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:32:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:35,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:35,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:35,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:32:35,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:35,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:35,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:35,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:35,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:32:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-09-25 14:32:35,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635946538] [2020-09-25 14:32:35,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:35,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:32:35,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828652251] [2020-09-25 14:32:35,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:32:35,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:35,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:32:35,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:32:35,289 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 16 states. [2020-09-25 14:32:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:35,506 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 14:32:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:32:35,507 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 96 [2020-09-25 14:32:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:35,508 INFO L225 Difference]: With dead ends: 79 [2020-09-25 14:32:35,509 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 14:32:35,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:32:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 14:32:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 14:32:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 14:32:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 14:32:35,517 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 14:32:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:35,517 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 14:32:35,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:32:35,517 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 14:32:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 14:32:35,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:35,518 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:35,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:32:35,519 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:35,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 14:32:35,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:35,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4163911] [2020-09-25 14:32:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:35,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:40,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:40,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 14:32:40,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:32:40,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:40,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 14:32:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:32:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 14:32:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:40,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:40,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:40,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:40,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:40,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:40,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 14:32:41,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-09-25 14:32:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 14:32:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:32:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 14:32:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 14:32:41,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-09-25 14:32:41,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 14:32:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:41,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:32:41,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:42,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:42,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:42,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:32:42,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-09-25 14:32:42,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:42,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:32:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:42,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 14:32:42,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:43,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:43,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:32:43,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-09-25 14:32:43,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:43,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 14:32:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:43,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:43,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:43,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:43,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:43,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 14:32:43,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:43,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:32:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:43,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:43,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:43,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:43,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 14:32:43,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:43,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:32:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:43,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:43,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:43,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:43,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 14:32:43,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:43,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:43,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:32:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:43,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:44,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 14:32:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:32:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 14:32:44,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:32:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:44,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:44,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:32:44,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:44,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:32:44,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:44,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:44,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 14:32:44,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:44,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:32:44,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:44,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:44,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:44,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:44,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:32:44,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:44,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:32:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 14 proven. 338 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-09-25 14:32:44,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4163911] [2020-09-25 14:32:44,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:44,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 14:32:44,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557328560] [2020-09-25 14:32:44,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 14:32:44,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:44,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 14:32:44,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:32:44,682 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 18 states. [2020-09-25 14:32:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:44,880 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 14:32:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:32:44,880 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-09-25 14:32:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:44,882 INFO L225 Difference]: With dead ends: 84 [2020-09-25 14:32:44,882 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 14:32:44,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=565, Unknown=0, NotChecked=0, Total=870 [2020-09-25 14:32:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 14:32:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 14:32:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 14:32:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 14:32:44,890 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 14:32:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:44,891 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 14:32:44,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 14:32:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 14:32:44,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 14:32:44,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:44,892 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:44,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:32:44,893 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:44,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 14:32:44,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:44,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846602048] [2020-09-25 14:32:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking...