/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:43:37,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:43:37,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:43:37,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:43:37,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:43:37,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:43:37,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:43:37,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:43:37,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:43:37,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:43:37,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:43:37,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:43:37,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:43:37,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:43:37,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:43:37,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:43:37,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:43:37,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:43:37,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:43:37,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:43:37,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:43:37,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:43:37,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:43:37,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:43:37,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:43:37,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:43:37,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:43:37,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:43:37,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:43:37,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:43:37,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:43:37,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:43:37,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:43:37,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:43:37,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:43:37,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:43:37,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:43:37,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:43:37,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:43:37,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:43:37,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:43:37,551 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 07:43:37,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:43:37,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:43:37,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:43:37,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:43:37,598 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:43:37,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:43:37,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:43:37,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:43:37,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:43:37,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:43:37,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:43:37,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:43:37,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:43:37,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:43:37,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:43:37,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:43:37,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:43:37,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:43:37,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:43:37,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:43:37,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:43:37,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:43:37,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:43:37,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:43:37,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:43:37,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:43:37,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:43:37,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:43:37,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:43:37,605 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:43:38,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:43:38,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:43:38,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:43:38,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:43:38,124 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:43:38,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-25 07:43:38,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cab1a3a1a/6ad9d5547715449289d9c3508721ad80/FLAGbfd4308ca [2020-09-25 07:43:38,698 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:43:38,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-25 07:43:38,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cab1a3a1a/6ad9d5547715449289d9c3508721ad80/FLAGbfd4308ca [2020-09-25 07:43:39,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cab1a3a1a/6ad9d5547715449289d9c3508721ad80 [2020-09-25 07:43:39,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:43:39,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:43:39,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:39,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:43:39,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:43:39,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1b413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39, skipping insertion in model container [2020-09-25 07:43:39,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:43:39,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:43:39,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:39,434 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:43:39,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:39,472 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:43:39,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39 WrapperNode [2020-09-25 07:43:39,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:39,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:43:39,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:43:39,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:43:39,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (1/1) ... [2020-09-25 07:43:39,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:43:39,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:43:39,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:43:39,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:43:39,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (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 07:43:39,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:43:39,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:43:39,680 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-25 07:43:39,680 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-09-25 07:43:39,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:43:39,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:43:39,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:43:39,681 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-25 07:43:39,681 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-09-25 07:43:39,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:43:39,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:43:39,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:43:39,976 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:43:39,976 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:43:39,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:39 BoogieIcfgContainer [2020-09-25 07:43:39,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:43:39,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:43:39,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:43:39,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:43:39,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:43:39" (1/3) ... [2020-09-25 07:43:39,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cac22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:39, skipping insertion in model container [2020-09-25 07:43:39,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:39" (2/3) ... [2020-09-25 07:43:39,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cac22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:39, skipping insertion in model container [2020-09-25 07:43:39,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:39" (3/3) ... [2020-09-25 07:43:40,000 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-09-25 07:43:40,009 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:43:40,019 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:43:40,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:43:40,070 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:43:40,070 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:43:40,071 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:43:40,071 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:43:40,071 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:43:40,071 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:43:40,071 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:43:40,071 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:43:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 07:43:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 07:43:40,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:40,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:40,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:40,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1892500808, now seen corresponding path program 1 times [2020-09-25 07:43:40,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:40,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050858760] [2020-09-25 07:43:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:40,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:40,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:43:40,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:40,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-09-25 07:43:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:40,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:43:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:43:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:43:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:40,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:40,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:43:40,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:40,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:40,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:40,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:43:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:40,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:40,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:43:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:40,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:40,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:40,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 07:43:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:40,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 07:43:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:41,069 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 07:43:41,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050858760] [2020-09-25 07:43:41,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:41,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:43:41,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329397343] [2020-09-25 07:43:41,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:43:41,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:41,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:43:41,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:41,104 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 8 states. [2020-09-25 07:43:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:41,410 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-09-25 07:43:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:43:41,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-09-25 07:43:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:41,429 INFO L225 Difference]: With dead ends: 72 [2020-09-25 07:43:41,429 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 07:43:41,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:43:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 07:43:41,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-09-25 07:43:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 07:43:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-09-25 07:43:41,504 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 29 [2020-09-25 07:43:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:41,505 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-09-25 07:43:41,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:43:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-09-25 07:43:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 07:43:41,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:41,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:41,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:43:41,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2098647058, now seen corresponding path program 1 times [2020-09-25 07:43:41,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:41,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155340464] [2020-09-25 07:43:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 07:43:41,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-25 07:43:41,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 07:43:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:41,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 07:43:41,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:41,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:41,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:43:41,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:43:41,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:41,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:41,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:43:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:42,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:43:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 07:43:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:43:42,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:43:42,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:43:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:42,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:43:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:42,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:42,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 07:43:42,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155340464] [2020-09-25 07:43:42,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:42,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:43:42,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618494895] [2020-09-25 07:43:42,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:43:42,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:42,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:43:42,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:43:42,155 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 6 states. [2020-09-25 07:43:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:42,314 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-09-25 07:43:42,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:43:42,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-25 07:43:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:42,317 INFO L225 Difference]: With dead ends: 61 [2020-09-25 07:43:42,317 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 07:43:42,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:42,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 07:43:42,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-09-25 07:43:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 07:43:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-25 07:43:42,329 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 37 [2020-09-25 07:43:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:42,329 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-25 07:43:42,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:43:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-25 07:43:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 07:43:42,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:42,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:42,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:43:42,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:42,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:42,333 INFO L82 PathProgramCache]: Analyzing trace with hash -165736076, now seen corresponding path program 1 times [2020-09-25 07:43:42,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:42,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798309355] [2020-09-25 07:43:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 07:43:42,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 07:43:42,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:43:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:43:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:43:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:43:42,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:42,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:43:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:43:42,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 07:43:42,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:43:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:43:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:42,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:42,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:42,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:42,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:43:42,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:42,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:43:42,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:43:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:43,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:43,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:43:43,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:43,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:43,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:43:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:43,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 07:43:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:43,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:43,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:43:43,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:43,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:43,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 07:43:43,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798309355] [2020-09-25 07:43:43,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:43,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:43:43,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916272728] [2020-09-25 07:43:43,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:43:43,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:43,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:43:43,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:43:43,095 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-09-25 07:43:43,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:43,630 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2020-09-25 07:43:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 07:43:43,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-25 07:43:43,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:43,635 INFO L225 Difference]: With dead ends: 93 [2020-09-25 07:43:43,635 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 07:43:43,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-09-25 07:43:43,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 07:43:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-09-25 07:43:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 07:43:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-09-25 07:43:43,675 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 48 [2020-09-25 07:43:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:43,675 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-09-25 07:43:43,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:43:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-09-25 07:43:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 07:43:43,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:43,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:43,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:43:43,683 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:43,684 INFO L82 PathProgramCache]: Analyzing trace with hash 492898986, now seen corresponding path program 1 times [2020-09-25 07:43:43,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:43,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145774561] [2020-09-25 07:43:43,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:43,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:45,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:45,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 07:43:45,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:43:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2034 [2020-09-25 07:43:45,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:45,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:43:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:43:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:43:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:45,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:45,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:45,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:43:45,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:45,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:45,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:45,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:45,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:45,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:43:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:46,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:43:46,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-25 07:43:46,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:46,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:43:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:46,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:46,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:46,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:43:46,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:46,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:43:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:46,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:46,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:46,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:46,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:43:46,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:46,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 07:43:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:46,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:43:46,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 07:43:46,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:46,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:46,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:43:46,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:46,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:43:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:46,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:46,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:43:46,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:46,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 07:43:46,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145774561] [2020-09-25 07:43:46,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:46,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:43:46,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610838831] [2020-09-25 07:43:46,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:43:46,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:46,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:43:46,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:46,376 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 10 states. [2020-09-25 07:43:46,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:46,624 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2020-09-25 07:43:46,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:43:46,625 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-09-25 07:43:46,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:46,627 INFO L225 Difference]: With dead ends: 129 [2020-09-25 07:43:46,627 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 07:43:46,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:43:46,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 07:43:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-25 07:43:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 07:43:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-09-25 07:43:46,641 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 56 [2020-09-25 07:43:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:46,642 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-09-25 07:43:46,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:43:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-09-25 07:43:46,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 07:43:46,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:46,645 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:46,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:43:46,645 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1310810726, now seen corresponding path program 2 times [2020-09-25 07:43:46,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:46,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139401542] [2020-09-25 07:43:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:46,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:51,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:51,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 07:43:51,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:43:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:43:51,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:51,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:43:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 07:43:51,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:51,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:51,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:43:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:51,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:51,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:51,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:43:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:52,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 07:43:53,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:43:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1785 [2020-09-25 07:43:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:43:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:43:53,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 07:43:53,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:43:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:53,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:53,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:43:53,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:43:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:43:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:53,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:53,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:43:53,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:53,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 07:43:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:53,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:43:53,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:53,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 07:43:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:53,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:43:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:53,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:43:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 07:43:54,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139401542] [2020-09-25 07:43:54,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:54,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:43:54,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121112975] [2020-09-25 07:43:54,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:43:54,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:54,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:43:54,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:43:54,008 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 11 states. [2020-09-25 07:43:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:54,355 INFO L93 Difference]: Finished difference Result 122 states and 156 transitions. [2020-09-25 07:43:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:43:54,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 07:43:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:54,361 INFO L225 Difference]: With dead ends: 122 [2020-09-25 07:43:54,362 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 07:43:54,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:43:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 07:43:54,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2020-09-25 07:43:54,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 07:43:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-09-25 07:43:54,386 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 67 [2020-09-25 07:43:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:54,387 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-09-25 07:43:54,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:43:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-09-25 07:43:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 07:43:54,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:54,395 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:54,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:43:54,396 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash -646694506, now seen corresponding path program 2 times [2020-09-25 07:43:54,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:54,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610878617] [2020-09-25 07:43:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:55,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:55,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 07:43:55,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:55,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1241 [2020-09-25 07:43:55,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:55,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 07:43:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:43:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 07:43:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:55,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:55,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:43:55,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:55,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:55,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:55,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:55,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:43:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 07:43:56,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-09-25 07:43:56,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 07:43:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:56,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 07:43:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:43:56,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 07:43:56,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:43:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:43:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:43:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:43:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:43:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:43:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:43:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 07:43:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:43:56,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 07:43:56,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:43:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 07:43:56,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:43:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:56,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:43:56,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:43:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:43:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:56,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:56,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:43:56,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:56,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:43:56,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:56,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:43:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:43:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 07:43:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:56,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:43:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:43:57,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:57,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:43:57,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:57,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:43:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:57,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:57,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:57,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:43:57,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:57,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:43:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-09-25 07:43:57,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610878617] [2020-09-25 07:43:57,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:57,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 07:43:57,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278696510] [2020-09-25 07:43:57,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:43:57,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:57,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:43:57,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:43:57,205 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 15 states. [2020-09-25 07:43:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:57,932 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-09-25 07:43:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 07:43:57,933 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 94 [2020-09-25 07:43:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:57,936 INFO L225 Difference]: With dead ends: 102 [2020-09-25 07:43:57,936 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 07:43:57,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2020-09-25 07:43:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 07:43:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-09-25 07:43:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 07:43:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-25 07:43:57,951 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 94 [2020-09-25 07:43:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:57,952 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-25 07:43:57,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:43:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-25 07:43:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 07:43:57,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:57,956 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:43:57,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:43:57,956 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash 774145474, now seen corresponding path program 3 times [2020-09-25 07:43:57,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:57,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915988654] [2020-09-25 07:43:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:58,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:58,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:03,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:03,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 07:44:03,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:44:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 07:44:03,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:03,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:44:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 07:44:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 07:44:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:03,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:03,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:03,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:44:03,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:44:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:03,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:03,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:03,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:44:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:03,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 07:44:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:44:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:44:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:08,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:44:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:44:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:44:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:08,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:44:08,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:44:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 07:44:08,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:08,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:08,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:44:08,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:08,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:44:08,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:08,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:08,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:08,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:08,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:44:08,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:08,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:08,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:44:08,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:08,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:44:08,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:08,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:44:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:08,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:08,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:44:08,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:08,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:44:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:08,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 07:44:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:08,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:13,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:13,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 07:44:13,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:44:13,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:44:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:13,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:44:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:44:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:44:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:13,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:13,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:44:13,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:44:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-09-25 07:44:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:13,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:13,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:44:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:14,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:14,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:14,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:14,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:44:14,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:14,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:44:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:44:14,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:44:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:14,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:14,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:44:14,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:14,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:44:14,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 07:44:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:14,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:44:14,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:14,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:44:14,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:14,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:44:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:14,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:14,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:14,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:44:14,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:14,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:44:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:14,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:14,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:14,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:44:14,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:14,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-25 07:44:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:14,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:44:14,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:14,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:44:14,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:14,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:44:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:14,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:44:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:14,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:14,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:44:14,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:14,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:14,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:14,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:14,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 84 proven. 176 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2020-09-25 07:44:14,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915988654] [2020-09-25 07:44:14,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:44:14,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:44:14,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318744689] [2020-09-25 07:44:14,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:44:14,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:14,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:44:14,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:44:14,184 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 11 states. [2020-09-25 07:44:14,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:14,627 INFO L93 Difference]: Finished difference Result 163 states and 207 transitions. [2020-09-25 07:44:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:44:14,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 132 [2020-09-25 07:44:14,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:14,631 INFO L225 Difference]: With dead ends: 163 [2020-09-25 07:44:14,631 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 07:44:14,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-09-25 07:44:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 07:44:14,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-09-25 07:44:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 07:44:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-09-25 07:44:14,645 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 132 [2020-09-25 07:44:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:14,646 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-09-25 07:44:14,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:44:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-09-25 07:44:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 07:44:14,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:14,648 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:14,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:44:14,648 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1860925472, now seen corresponding path program 4 times [2020-09-25 07:44:14,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:14,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712933047] [2020-09-25 07:44:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:19,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:19,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 07:44:19,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:44:19,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:44:19,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:19,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:19,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:44:19,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:44:19,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:44:19,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:19,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:44:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:19,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:19,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 07:44:19,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:19,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 07:44:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:19,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:19,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:24,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 07:44:24,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:44:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:44:24,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:24,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 07:44:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:24,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:24,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:24,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:44:24,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:44:24,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:24,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:44:24,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:24,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:24,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:24,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:44:24,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:24,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:24,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:44:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:24,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:24,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:24,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 07:44:24,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:24,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:44:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:44:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:24,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 07:44:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:44:25,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:44:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 07:44:25,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:25,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:44:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 07:44:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:25,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:25,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:44:25,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:44:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:44:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:25,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 07:44:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:44:25,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:25,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:44:25,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:44:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:25,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:44:25,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:44:25,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 07:44:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:44:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 07:44:25,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:44:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:44:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:44:25,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:44:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:44:25,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 07:44:25,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:44:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 07:44:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:44:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:44:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:44:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:44:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:44:25,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:44:25,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:44:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:44:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:44:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:44:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:44:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 65 proven. 47 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 07:44:25,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712933047] [2020-09-25 07:44:25,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:44:25,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 07:44:25,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847865843] [2020-09-25 07:44:25,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 07:44:25,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:44:25,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 07:44:25,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:44:25,325 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 14 states. [2020-09-25 07:44:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:44:25,751 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2020-09-25 07:44:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:44:25,751 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-09-25 07:44:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:44:25,754 INFO L225 Difference]: With dead ends: 114 [2020-09-25 07:44:25,754 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 07:44:25,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2020-09-25 07:44:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 07:44:25,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2020-09-25 07:44:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 07:44:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-25 07:44:25,765 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 102 [2020-09-25 07:44:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:44:25,766 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-25 07:44:25,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 07:44:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-25 07:44:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 07:44:25,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:44:25,768 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:44:25,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:44:25,768 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:44:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:44:25,768 INFO L82 PathProgramCache]: Analyzing trace with hash 837957098, now seen corresponding path program 5 times [2020-09-25 07:44:25,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:44:25,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633797754] [2020-09-25 07:44:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:44:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:44:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:25,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:44:27,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking...