/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:16:58,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:16:58,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:16:58,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:16:58,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:16:58,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:16:58,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:16:58,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:16:58,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:16:58,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:16:58,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:16:58,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:16:58,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:16:58,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:16:58,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:16:58,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:16:58,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:16:58,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:16:58,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:16:58,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:16:58,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:16:58,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:16:58,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:16:58,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:16:58,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:16:58,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:16:58,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:16:58,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:16:58,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:16:58,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:16:58,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:16:58,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:16:58,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:16:58,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:16:58,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:16:58,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:16:58,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:16:58,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:16:58,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:16:58,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:16:58,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:16:58,430 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 04:16:58,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:16:58,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:16:58,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:16:58,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:16:58,478 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:16:58,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:16:58,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:16:58,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:16:58,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:16:58,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:16:58,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:16:58,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:16:58,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:16:58,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:16:58,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:16:58,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:16:58,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:16:58,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:16:58,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:16:58,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:16:58,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:16:58,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:16:58,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:16:58,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:16:58,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:16:58,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:16:58,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:16:58,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:16:58,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:16:58,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:16:58,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:16:58,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:16:58,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:16:58,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:16:58,998 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:16:58,999 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 04:16:59,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15835cea6/dc1441f4a9574650ae171f0f8e546aea/FLAGae947c941 [2020-09-25 04:16:59,597 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:16:59,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 04:16:59,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15835cea6/dc1441f4a9574650ae171f0f8e546aea/FLAGae947c941 [2020-09-25 04:16:59,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15835cea6/dc1441f4a9574650ae171f0f8e546aea [2020-09-25 04:16:59,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:16:59,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:16:59,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:16:59,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:16:59,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:16:59,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:16:59" (1/1) ... [2020-09-25 04:17:00,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1576aa10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:59, skipping insertion in model container [2020-09-25 04:17:00,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:16:59" (1/1) ... [2020-09-25 04:17:00,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:17:00,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:17:00,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:00,283 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:17:00,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:00,318 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:17:00,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00 WrapperNode [2020-09-25 04:17:00,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:00,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:17:00,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:17:00,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:17:00,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (1/1) ... [2020-09-25 04:17:00,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (1/1) ... [2020-09-25 04:17:00,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (1/1) ... [2020-09-25 04:17:00,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (1/1) ... [2020-09-25 04:17:00,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (1/1) ... [2020-09-25 04:17:00,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (1/1) ... [2020-09-25 04:17:00,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (1/1) ... [2020-09-25 04:17:00,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:17:00,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:17:00,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:17:00,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:17:00,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (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 04:17:00,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:17:00,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:17:00,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-25 04:17:00,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:17:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:17:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:17:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-25 04:17:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:17:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:17:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:17:00,749 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:17:00,749 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:17:00,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:00 BoogieIcfgContainer [2020-09-25 04:17:00,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:17:00,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:17:00,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:17:00,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:17:00,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:16:59" (1/3) ... [2020-09-25 04:17:00,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d99857e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:00, skipping insertion in model container [2020-09-25 04:17:00,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:00" (2/3) ... [2020-09-25 04:17:00,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d99857e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:00, skipping insertion in model container [2020-09-25 04:17:00,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:00" (3/3) ... [2020-09-25 04:17:00,766 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-09-25 04:17:00,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:17:00,795 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:17:00,823 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:17:00,866 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:17:00,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:17:00,867 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:17:00,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:17:00,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:17:00,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:17:00,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:17:00,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:17:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 04:17:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 04:17:00,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:00,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:00,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:00,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:00,916 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-25 04:17:00,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:00,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932055861] [2020-09-25 04:17:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:01,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:01,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:17:01,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 04:17:01,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:01,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:17:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:17:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:01,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:01,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:01,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:17:01,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:01,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:01,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:01,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:01,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:01,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 04:17:01,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:01,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:01,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:01,491 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 04:17:01,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932055861] [2020-09-25 04:17:01,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:01,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:17:01,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767416174] [2020-09-25 04:17:01,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:17:01,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:01,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:17:01,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:01,523 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-25 04:17:01,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:01,728 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-25 04:17:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:17:01,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 04:17:01,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:01,747 INFO L225 Difference]: With dead ends: 59 [2020-09-25 04:17:01,747 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 04:17:01,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:17:01,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 04:17:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-25 04:17:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 04:17:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-09-25 04:17:01,819 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2020-09-25 04:17:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:01,820 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-09-25 04:17:01,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:17:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-09-25 04:17:01,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:17:01,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:01,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:01,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:17:01,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:01,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:01,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-25 04:17:01,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:01,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517905381] [2020-09-25 04:17:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:02,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:17:02,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-25 04:17:02,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:02,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:02,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:02,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 04:17:02,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:17:02,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:02,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:02,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:02,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:02,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:02,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:02,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 04:17:02,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:02,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:02,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:17:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:02,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:02,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:17:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:02,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:17:02,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517905381] [2020-09-25 04:17:02,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:02,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:17:02,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281071012] [2020-09-25 04:17:02,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:17:02,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:02,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:17:02,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:17:02,405 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-09-25 04:17:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:02,642 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 04:17:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:17:02,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 04:17:02,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:02,645 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:17:02,646 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:17:02,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:17:02,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:17:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 04:17:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:17:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-09-25 04:17:02,661 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2020-09-25 04:17:02,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:02,662 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-09-25 04:17:02,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:17:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-09-25 04:17:02,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 04:17:02,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:02,666 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:02,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:17:02,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:02,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:02,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2094172607, now seen corresponding path program 1 times [2020-09-25 04:17:02,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:02,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245068163] [2020-09-25 04:17:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 04:17:03,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-25 04:17:03,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 04:17:03,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:03,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:17:03,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:03,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:03,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:03,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:03,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:03,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:03,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:03,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 04:17:03,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 04:17:03,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 04:17:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:03,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:17:03,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:17:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:04,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:04,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:04,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:04,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:04,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:17:04,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:04,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:04,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:17:04,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:04,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:17:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 04:17:04,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245068163] [2020-09-25 04:17:04,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:04,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:17:04,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145662060] [2020-09-25 04:17:04,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:17:04,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:04,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:17:04,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:04,045 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2020-09-25 04:17:04,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:04,136 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2020-09-25 04:17:04,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:17:04,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-25 04:17:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:04,140 INFO L225 Difference]: With dead ends: 73 [2020-09-25 04:17:04,140 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:17:04,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:17:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:17:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-25 04:17:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 04:17:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-25 04:17:04,165 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 43 [2020-09-25 04:17:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:04,166 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-25 04:17:04,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:17:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-25 04:17:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 04:17:04,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:04,177 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:04,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:17:04,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:04,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:04,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-25 04:17:04,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:04,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72438208] [2020-09-25 04:17:04,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:04,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:04,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:04,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:17:04,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:04,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 04:17:04,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:04,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:17:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 04:17:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:17:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:04,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:04,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:04,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:04,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:04,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:04,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:04,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:04,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:17:04,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-25 04:17:04,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:04,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:17:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:17:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:04,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:04,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:04,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:04,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:04,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 04:17:04,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:04,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:17:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:04,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:04,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:04,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:04,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:17:04,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:04,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:17:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:05,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:05,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:17:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:05,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:05,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:17:05,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72438208] [2020-09-25 04:17:05,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:05,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:17:05,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267400497] [2020-09-25 04:17:05,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:17:05,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:17:05,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:17:05,096 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-09-25 04:17:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:05,563 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2020-09-25 04:17:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 04:17:05,565 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 04:17:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:05,569 INFO L225 Difference]: With dead ends: 69 [2020-09-25 04:17:05,569 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 04:17:05,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:17:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 04:17:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-09-25 04:17:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 04:17:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-09-25 04:17:05,588 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 53 [2020-09-25 04:17:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:05,588 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-09-25 04:17:05,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:17:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2020-09-25 04:17:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 04:17:05,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:05,593 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:05,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:17:05,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash 358541405, now seen corresponding path program 2 times [2020-09-25 04:17:05,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:05,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258834429] [2020-09-25 04:17:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:17:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:17:10,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:10,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 04:17:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:17:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:10,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:10,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:10,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:10,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:12,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:12,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 04:17:12,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:12,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-09-25 04:17:12,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:12,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:17:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:17:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:12,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:12,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:12,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:17:12,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:12,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:17:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:12,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:17:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:12,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:17:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:13,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:13,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:13,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:17:13,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:13,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:17:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:17:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:13,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:13,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:13,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:17:13,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:13,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:13,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:13,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 04:17:13,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258834429] [2020-09-25 04:17:13,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:13,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:17:13,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560777717] [2020-09-25 04:17:13,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:17:13,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:13,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:17:13,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:17:13,220 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 8 states. [2020-09-25 04:17:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:13,448 INFO L93 Difference]: Finished difference Result 128 states and 196 transitions. [2020-09-25 04:17:13,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:17:13,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 04:17:13,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:13,451 INFO L225 Difference]: With dead ends: 128 [2020-09-25 04:17:13,452 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 04:17:13,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:17:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 04:17:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-25 04:17:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 04:17:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2020-09-25 04:17:13,469 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 63 [2020-09-25 04:17:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:13,470 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2020-09-25 04:17:13,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:17:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2020-09-25 04:17:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 04:17:13,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:13,472 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:13,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:17:13,472 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:13,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1096450289, now seen corresponding path program 3 times [2020-09-25 04:17:13,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:13,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424371938] [2020-09-25 04:17:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:13,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:17:13,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:13,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 04:17:13,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:13,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:17:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 04:17:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:17:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:13,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:13,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:13,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:13,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:13,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:13,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:14,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:14,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 04:17:14,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:14,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 04:17:14,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:14,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 04:17:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 04:17:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:14,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:14,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:14,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:17:14,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 04:17:14,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:14,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:17:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:17:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:14,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:14,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:14,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:14,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:14,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 04:17:14,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:14,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:17:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:14,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:14,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:14,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:14,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:17:14,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:14,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:17:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:14,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:14,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:14,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:14,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:14,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:17:14,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:14,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:14,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 04:17:14,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424371938] [2020-09-25 04:17:14,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:14,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:17:14,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625842984] [2020-09-25 04:17:14,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:17:14,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:14,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:17:14,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:17:14,615 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand 12 states. [2020-09-25 04:17:14,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:14,994 INFO L93 Difference]: Finished difference Result 118 states and 165 transitions. [2020-09-25 04:17:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:17:14,995 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-25 04:17:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:14,999 INFO L225 Difference]: With dead ends: 118 [2020-09-25 04:17:14,999 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 04:17:15,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-09-25 04:17:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 04:17:15,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2020-09-25 04:17:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 04:17:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2020-09-25 04:17:15,033 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 63 [2020-09-25 04:17:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:15,034 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2020-09-25 04:17:15,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:17:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2020-09-25 04:17:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:17:15,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:15,039 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:15,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:17:15,039 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:15,040 INFO L82 PathProgramCache]: Analyzing trace with hash 449882030, now seen corresponding path program 4 times [2020-09-25 04:17:15,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:15,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307263608] [2020-09-25 04:17:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:19,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:19,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 04:17:19,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:19,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4405 [2020-09-25 04:17:19,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:19,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 04:17:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:17:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:19,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:19,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:19,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:19,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:19,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:19,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:20,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 04:17:20,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:20,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-09-25 04:17:20,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:20,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:17:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:17:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:20,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:20,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:17:20,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:20,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:17:20,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:20,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:17:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:17:20,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:20,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:20,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:17:20,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:20,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:17:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:17:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:20,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:20,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:17:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:20,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:20,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:20,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 04:17:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:20,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:20,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:17:20,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:20,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:17:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:20,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:20,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:17:20,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:20,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:20,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:20,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 04:17:20,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307263608] [2020-09-25 04:17:20,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:20,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 04:17:20,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698241123] [2020-09-25 04:17:20,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:17:20,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:20,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:17:20,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:17:20,435 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand 4 states. [2020-09-25 04:17:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:20,505 INFO L93 Difference]: Finished difference Result 150 states and 224 transitions. [2020-09-25 04:17:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:17:20,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 04:17:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:20,509 INFO L225 Difference]: With dead ends: 150 [2020-09-25 04:17:20,514 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 04:17:20,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 04:17:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 04:17:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 04:17:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2020-09-25 04:17:20,550 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 73 [2020-09-25 04:17:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:20,551 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2020-09-25 04:17:20,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:17:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2020-09-25 04:17:20,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 04:17:20,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:20,554 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:20,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:17:20,555 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:20,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:20,555 INFO L82 PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 5 times [2020-09-25 04:17:20,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:20,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26893949] [2020-09-25 04:17:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:25,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 04:17:25,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:25,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4982 [2020-09-25 04:17:25,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:25,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:17:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-25 04:17:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:17:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:25,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:25,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:25,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:25,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:25,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:25,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:25,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:17:28,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3054 [2020-09-25 04:17:28,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:17:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:17:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 04:17:28,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:17:28,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:17:28,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:17:28,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:28,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:17:28,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:28,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:28,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:28,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:17:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:28,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:28,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:17:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:28,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:17:28,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:17:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:28,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:28,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:28,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:17:28,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:28,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-09-25 04:17:28,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26893949] [2020-09-25 04:17:28,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:28,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:17:28,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765162689] [2020-09-25 04:17:28,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:17:28,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:28,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:17:28,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:17:28,900 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand 9 states. [2020-09-25 04:17:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:29,091 INFO L93 Difference]: Finished difference Result 98 states and 130 transitions. [2020-09-25 04:17:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:17:29,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-09-25 04:17:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:29,093 INFO L225 Difference]: With dead ends: 98 [2020-09-25 04:17:29,094 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 04:17:29,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:17:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 04:17:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-09-25 04:17:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 04:17:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 123 transitions. [2020-09-25 04:17:29,106 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 123 transitions. Word has length 92 [2020-09-25 04:17:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:29,106 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 123 transitions. [2020-09-25 04:17:29,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:17:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 123 transitions. [2020-09-25 04:17:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 04:17:29,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:29,108 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:29,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:17:29,109 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1838029976, now seen corresponding path program 6 times [2020-09-25 04:17:29,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:29,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502782321] [2020-09-25 04:17:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:34,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 04:17:34,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:17:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:17:34,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:34,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 04:17:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:17:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:34,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:34,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:34,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:34,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:34,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:34,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:36,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:39,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:39,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 04:17:39,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:17:39,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:17:39,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:39,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:17:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 04:17:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:39,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:17:44,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:17:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:17:44,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:17:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 04:17:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 04:17:44,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:17:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 04:17:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:17:44,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:17:44,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:44,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:17:44,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:44,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:44,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:17:44,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:44,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:17:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:44,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:17:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:44,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:44,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:17:44,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:17:44,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:44,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:17:44,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:44,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 04:17:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:44,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:44,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:44,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:17:44,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:44,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:17:44,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:44,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:17:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 119 proven. 27 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-09-25 04:17:44,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502782321] [2020-09-25 04:17:44,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:44,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:17:44,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160141480] [2020-09-25 04:17:44,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:17:44,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:44,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:17:44,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:17:44,585 INFO L87 Difference]: Start difference. First operand 92 states and 123 transitions. Second operand 8 states. [2020-09-25 04:17:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:44,727 INFO L93 Difference]: Finished difference Result 149 states and 230 transitions. [2020-09-25 04:17:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:17:44,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-09-25 04:17:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:44,729 INFO L225 Difference]: With dead ends: 149 [2020-09-25 04:17:44,729 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:17:44,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:17:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:17:44,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:17:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:17:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:17:44,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2020-09-25 04:17:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:44,732 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:17:44,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:17:44,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:17:44,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:17:44,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:17:44,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:17:45,170 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2020-09-25 04:17:45,243 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 04:17:45,243 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:17:45,244 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:17:45,244 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:17:45,244 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:17:45,244 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:17:45,244 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-09-25 04:17:45,245 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~m| ackermann_~m) (<= ackermann_~m |ackermann_#in~m|) (or (< 0 ackermann_~m) (<= (+ ackermann_~m 1) 0))) [2020-09-25 04:17:45,245 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-09-25 04:17:45,245 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 04:17:45,245 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~m| ackermann_~m) (<= ackermann_~m |ackermann_#in~m|) (or (< 0 ackermann_~m) (<= (+ ackermann_~m 1) 0))) [2020-09-25 04:17:45,245 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (and (let ((.cse0 (= ackermann_~n |ackermann_#in~n|))) (or (and (<= 2 |ackermann_#t~ret1|) (= ackermann_~m |ackermann_#in~m|) .cse0) (and .cse0 (<= |ackermann_#in~m| ackermann_~m) (<= ackermann_~m |ackermann_#in~m|) (or (<= ackermann_~m 0) (<= 2 ackermann_~m))))) (or (not (<= |ackermann_#in~m| 0)) (not (<= 0 |ackermann_#in~m|)))) [2020-09-25 04:17:45,246 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 04:17:45,246 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 04:17:45,246 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 04:17:45,246 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 04:17:45,246 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 04:17:45,246 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 04:17:45,246 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 04:17:45,246 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 04:17:45,247 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-25 04:17:45,247 INFO L268 CegarLoopResult]: For program point L22-6(line 22) no Hoare annotation was computed. [2020-09-25 04:17:45,247 INFO L268 CegarLoopResult]: For program point L15(lines 15 23) no Hoare annotation was computed. [2020-09-25 04:17:45,247 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-09-25 04:17:45,247 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 04:17:45,247 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 04:17:45,247 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 04:17:45,248 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 04:17:45,248 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 04:17:45,248 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 04:17:45,248 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-09-25 04:17:45,248 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-09-25 04:17:45,248 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 04:17:45,248 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 04:17:45,249 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-09-25 04:17:45,249 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 04:17:45,249 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 04:17:45,249 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 04:17:45,249 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 04:17:45,249 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-09-25 04:17:45,249 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-09-25 04:17:45,250 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-09-25 04:17:45,250 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-25 04:17:45,250 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-09-25 04:17:45,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:17:45 BoogieIcfgContainer [2020-09-25 04:17:45,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:17:45,260 INFO L168 Benchmark]: Toolchain (without parser) took 45278.03 ms. Allocated memory was 138.9 MB in the beginning and 473.4 MB in the end (delta: 334.5 MB). Free memory was 101.9 MB in the beginning and 247.0 MB in the end (delta: -145.1 MB). Peak memory consumption was 189.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,261 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:17:45,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.29 ms. Allocated memory is still 138.9 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,262 INFO L168 Benchmark]: Boogie Preprocessor took 110.94 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.3 MB in the beginning and 179.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,263 INFO L168 Benchmark]: RCFGBuilder took 325.34 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 166.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,264 INFO L168 Benchmark]: TraceAbstraction took 44500.31 ms. Allocated memory was 201.9 MB in the beginning and 473.4 MB in the end (delta: 271.6 MB). Free memory was 165.5 MB in the beginning and 247.0 MB in the end (delta: -81.6 MB). Peak memory consumption was 190.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:45,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.29 ms. Allocated memory is still 138.9 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.94 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.3 MB in the beginning and 179.9 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.34 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 166.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44500.31 ms. Allocated memory was 201.9 MB in the beginning and 473.4 MB in the end (delta: 271.6 MB). Free memory was 165.5 MB in the beginning and 247.0 MB in the end (delta: -81.6 MB). Peak memory consumption was 190.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.8s, OverallIterations: 9, TraceHistogramMax: 10, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 316 SDtfs, 300 SDslu, 1220 SDs, 0 SdLazy, 932 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 105 PreInvPairs, 123 NumberOfFragments, 85 HoareAnnotationTreeSize, 105 FomulaSimplifications, 303 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 509 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 41.0s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 547 ConstructedInterpolants, 0 QuantifiedInterpolants, 84841 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 613/714 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...