/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:53:16,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:53:16,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:53:16,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:53:16,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:53:16,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:53:16,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:53:16,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:53:16,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:53:16,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:53:16,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:53:16,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:53:16,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:53:16,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:53:16,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:53:16,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:53:16,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:53:16,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:53:16,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:53:16,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:53:16,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:53:16,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:53:16,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:53:16,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:53:16,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:53:16,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:53:16,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:53:16,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:53:16,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:53:16,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:53:16,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:53:16,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:53:16,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:53:16,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:53:16,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:53:16,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:53:16,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:53:16,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:53:16,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:53:16,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:53:16,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:53:16,668 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 08:53:16,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:53:16,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:53:16,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:53:16,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:53:16,708 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:53:16,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:53:16,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:53:16,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:53:16,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:53:16,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:53:16,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:53:16,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:53:16,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:53:16,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:53:16,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:53:16,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:53:16,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:53:16,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:53:16,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:53:16,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:53:16,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:53:16,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:53:16,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:53:16,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:53:16,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:53:16,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:53:16,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:53:16,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:53:16,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:53:16,713 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:53:17,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:53:17,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:53:17,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:53:17,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:53:17,222 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:53:17,223 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-25 08:53:17,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2f6b155a/3d90da8075d942008bb712050e649ee5/FLAGd47b69828 [2020-09-25 08:53:17,835 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:53:17,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-25 08:53:17,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2f6b155a/3d90da8075d942008bb712050e649ee5/FLAGd47b69828 [2020-09-25 08:53:18,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2f6b155a/3d90da8075d942008bb712050e649ee5 [2020-09-25 08:53:18,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:53:18,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:53:18,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:18,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:53:18,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:53:18,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18, skipping insertion in model container [2020-09-25 08:53:18,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:53:18,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:53:18,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:18,455 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:53:18,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:18,492 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:53:18,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18 WrapperNode [2020-09-25 08:53:18,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:18,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:53:18,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:53:18,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:53:18,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:53:18,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:53:18,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:53:18,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:53:18,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:53:18,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:53:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:53:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 08:53:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:53:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:53:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:53:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 08:53:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:53:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:53:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:53:18,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:53:18,911 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:53:18,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:18 BoogieIcfgContainer [2020-09-25 08:53:18,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:53:18,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:53:18,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:53:18,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:53:18,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:53:18" (1/3) ... [2020-09-25 08:53:18,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6d15e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:18, skipping insertion in model container [2020-09-25 08:53:18,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (2/3) ... [2020-09-25 08:53:18,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6d15e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:18, skipping insertion in model container [2020-09-25 08:53:18,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:18" (3/3) ... [2020-09-25 08:53:18,955 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-1.c [2020-09-25 08:53:18,982 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:53:18,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:53:19,031 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:53:19,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:53:19,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:53:19,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:53:19,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:53:19,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:53:19,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:53:19,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:53:19,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:53:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 08:53:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:53:19,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:19,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:19,096 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:19,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 08:53:19,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:19,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922814781] [2020-09-25 08:53:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:19,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:19,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 08:53:19,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:53:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:19,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:53:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:19,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:19,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:19,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:53:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,584 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 08:53:19,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922814781] [2020-09-25 08:53:19,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:19,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:19,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703216499] [2020-09-25 08:53:19,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:19,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:19,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:19,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:19,619 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 08:53:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:19,717 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 08:53:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:53:19,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:53:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:19,740 INFO L225 Difference]: With dead ends: 44 [2020-09-25 08:53:19,740 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 08:53:19,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 08:53:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 08:53:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:53:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 08:53:19,803 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 08:53:19,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:19,804 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 08:53:19,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 08:53:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 08:53:19,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:19,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:19,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:53:19,808 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 08:53:19,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:19,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003865600] [2020-09-25 08:53:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:53:20,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:20,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 08:53:20,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:20,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:20,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:20,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:20,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 08:53:20,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,150 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 08:53:20,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003865600] [2020-09-25 08:53:20,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:20,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:20,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022310377] [2020-09-25 08:53:20,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:20,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:20,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:20,155 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 08:53:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:20,220 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 08:53:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:53:20,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 08:53:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:20,222 INFO L225 Difference]: With dead ends: 36 [2020-09-25 08:53:20,223 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 08:53:20,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 08:53:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 08:53:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:53:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 08:53:20,233 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 08:53:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:20,234 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 08:53:20,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 08:53:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:53:20,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:20,236 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:53:20,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:53:20,237 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:20,237 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 08:53:20,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:20,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469463311] [2020-09-25 08:53:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:53:22,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2183 [2020-09-25 08:53:22,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:53:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:22,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-09-25 08:53:22,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:53:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:22,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:53:22,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:23,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:23,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:53:23,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:23,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 08:53:23,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469463311] [2020-09-25 08:53:23,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:23,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:53:23,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099263971] [2020-09-25 08:53:23,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:53:23,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:23,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:53:23,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:23,051 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-25 08:53:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:23,225 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-09-25 08:53:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:53:23,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 08:53:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:23,229 INFO L225 Difference]: With dead ends: 48 [2020-09-25 08:53:23,231 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 08:53:23,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:53:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 08:53:23,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-25 08:53:23,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 08:53:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 08:53:23,258 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 08:53:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:23,260 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 08:53:23,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:53:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 08:53:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:53:23,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:23,266 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:53:23,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:53:23,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:23,266 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-25 08:53:23,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:23,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115692041] [2020-09-25 08:53:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:26,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:53:26,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:53:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3586 [2020-09-25 08:53:26,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:26,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:53:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:53:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:26,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:26,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:26,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:27,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:27,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-09-25 08:53:27,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:27,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:27,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:53:27,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:27,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:53:27,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 08:53:28,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115692041] [2020-09-25 08:53:28,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:28,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:53:28,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272691124] [2020-09-25 08:53:28,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:53:28,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:28,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:53:28,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:28,017 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2020-09-25 08:53:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:28,135 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2020-09-25 08:53:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:53:28,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 08:53:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:28,139 INFO L225 Difference]: With dead ends: 66 [2020-09-25 08:53:28,139 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 08:53:28,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:53:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 08:53:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2020-09-25 08:53:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 08:53:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2020-09-25 08:53:28,153 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 34 [2020-09-25 08:53:28,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:28,154 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2020-09-25 08:53:28,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:53:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2020-09-25 08:53:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 08:53:28,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:28,157 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:53:28,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:53:28,157 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:28,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:28,158 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-25 08:53:28,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:28,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797131420] [2020-09-25 08:53:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:29,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:53:29,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-09-25 08:53:29,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:29,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:53:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:53:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:29,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:29,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:29,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:29,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:29,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:29,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:29,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:53:29,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:29,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:29,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:29,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:53:29,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:29,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:29,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:29,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:29,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:29,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:53:29,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:29,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:29,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 08:53:29,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797131420] [2020-09-25 08:53:29,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:29,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:53:29,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338107859] [2020-09-25 08:53:29,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:53:29,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:29,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:53:29,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:29,350 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand 9 states. [2020-09-25 08:53:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:29,450 INFO L93 Difference]: Finished difference Result 64 states and 90 transitions. [2020-09-25 08:53:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:53:29,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 08:53:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:29,453 INFO L225 Difference]: With dead ends: 64 [2020-09-25 08:53:29,453 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 08:53:29,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:53:29,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 08:53:29,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2020-09-25 08:53:29,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 08:53:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2020-09-25 08:53:29,466 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 34 [2020-09-25 08:53:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:29,466 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2020-09-25 08:53:29,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:53:29,467 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2020-09-25 08:53:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:53:29,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:29,469 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:53:29,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:53:29,470 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:29,470 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 08:53:29,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:29,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662334098] [2020-09-25 08:53:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:30,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:30,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:53:30,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:53:30,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1503 [2020-09-25 08:53:30,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:30,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:53:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:53:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:31,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:31,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:31,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-09-25 08:53:31,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:31,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:31,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:53:31,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:31,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:53:31,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 08:53:31,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662334098] [2020-09-25 08:53:31,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:31,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:53:31,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223369141] [2020-09-25 08:53:31,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:53:31,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:31,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:53:31,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:31,606 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand 9 states. [2020-09-25 08:53:31,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:31,715 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2020-09-25 08:53:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:53:31,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 08:53:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:31,718 INFO L225 Difference]: With dead ends: 70 [2020-09-25 08:53:31,719 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 08:53:31,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:53:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 08:53:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-09-25 08:53:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 08:53:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2020-09-25 08:53:31,742 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 35 [2020-09-25 08:53:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:31,742 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2020-09-25 08:53:31,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:53:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2020-09-25 08:53:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:53:31,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:31,750 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:31,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:53:31,750 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1900646979, now seen corresponding path program 3 times [2020-09-25 08:53:31,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:31,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215330141] [2020-09-25 08:53:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:53:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:53:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:53:36,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:53:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:36,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:36,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:36,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:40,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:41,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:41,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:53:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:53:41,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:41,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:53:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:41,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:41,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:53:41,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:41,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:41,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:41,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:42,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:42,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 08:53:42,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:42,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:42,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:42,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:42,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:42,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:42,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:42,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:42,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 08:53:42,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215330141] [2020-09-25 08:53:42,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:42,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:53:42,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316927595] [2020-09-25 08:53:42,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:53:42,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:42,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:53:42,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:53:42,231 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand 7 states. [2020-09-25 08:53:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:42,313 INFO L93 Difference]: Finished difference Result 98 states and 158 transitions. [2020-09-25 08:53:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:42,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 08:53:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:42,315 INFO L225 Difference]: With dead ends: 98 [2020-09-25 08:53:42,315 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 08:53:42,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:53:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 08:53:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-25 08:53:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:53:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2020-09-25 08:53:42,326 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 51 [2020-09-25 08:53:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:42,326 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2020-09-25 08:53:42,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:53:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2020-09-25 08:53:42,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 08:53:42,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:42,329 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:42,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:53:42,330 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:42,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:42,330 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-25 08:53:42,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:42,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218832732] [2020-09-25 08:53:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:42,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:47,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 08:53:47,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:53:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:53:47,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:47,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:53:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:53:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:47,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:47,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:47,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:47,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:47,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:47,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:47,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:51,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 08:53:51,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:53:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4234 [2020-09-25 08:53:51,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:51,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:53:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:51,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:53:51,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:51,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:52,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-25 08:53:52,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:53:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:52,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:52,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:53:52,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:53:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:52,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:53:52,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 08:53:52,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218832732] [2020-09-25 08:53:52,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:52,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:53:52,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261660274] [2020-09-25 08:53:52,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:53:52,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:52,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:53:52,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:53:52,241 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand 12 states. [2020-09-25 08:53:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:52,461 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2020-09-25 08:53:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:53:52,461 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 08:53:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:52,463 INFO L225 Difference]: With dead ends: 72 [2020-09-25 08:53:52,463 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 08:53:52,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:53:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 08:53:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-09-25 08:53:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 08:53:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 86 transitions. [2020-09-25 08:53:52,474 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 86 transitions. Word has length 53 [2020-09-25 08:53:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:52,474 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 86 transitions. [2020-09-25 08:53:52,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:53:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 86 transitions. [2020-09-25 08:53:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:53:52,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:52,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:52,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:53:52,476 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 4 times [2020-09-25 08:53:52,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:52,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089439126] [2020-09-25 08:53:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:57,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:53:57,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:53:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:53:57,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:57,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 08:53:57,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:57,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:57,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:57,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:57,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:57,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:00,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:54:00,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:54:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2754 [2020-09-25 08:54:00,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:00,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:00,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:54:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:54:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:00,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:00,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 08:54:00,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:00,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:54:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:00,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:00,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:00,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:00,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:00,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:00,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:00,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:00,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:00,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:00,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:54:00,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:00,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:00,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:54:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:00,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:00,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:54:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:00,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 08:54:00,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089439126] [2020-09-25 08:54:00,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:00,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:00,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928866404] [2020-09-25 08:54:00,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:00,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:00,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:00,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:00,570 INFO L87 Difference]: Start difference. First operand 62 states and 86 transitions. Second operand 9 states. [2020-09-25 08:54:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:00,672 INFO L93 Difference]: Finished difference Result 102 states and 166 transitions. [2020-09-25 08:54:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:54:00,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 08:54:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:00,675 INFO L225 Difference]: With dead ends: 102 [2020-09-25 08:54:00,675 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 08:54:00,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:54:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 08:54:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 62. [2020-09-25 08:54:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 08:54:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 89 transitions. [2020-09-25 08:54:00,688 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 89 transitions. Word has length 51 [2020-09-25 08:54:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:00,689 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 89 transitions. [2020-09-25 08:54:00,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 89 transitions. [2020-09-25 08:54:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 08:54:00,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:00,691 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:00,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:54:00,691 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:00,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1068467993, now seen corresponding path program 3 times [2020-09-25 08:54:00,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:00,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668274042] [2020-09-25 08:54:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:02,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:05,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 08:54:05,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:54:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:54:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:05,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:54:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:54:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:05,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:05,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:05,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:05,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:05,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:10,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 08:54:10,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 08:54:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:54:10,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:10,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:54:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:54:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:10,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:11,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:11,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:11,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 08:54:11,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:11,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:11,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:54:11,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:11,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:11,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 08:54:11,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:11,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:11,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:11,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:11,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:11,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:54:11,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:11,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:11,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:11,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:54:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking...