/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=DEEPEST --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 00:51:46,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:51:46,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:51:46,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:51:46,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:51:46,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:51:46,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:51:46,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:51:46,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:51:46,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:51:46,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:51:46,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:51:46,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:51:46,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:51:46,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:51:46,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:51:46,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:51:46,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:51:46,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:51:46,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:51:46,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:51:46,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:51:46,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:51:46,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:51:46,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:51:46,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:51:46,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:51:46,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:51:46,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:51:46,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:51:46,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:51:46,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:51:46,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:51:46,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:51:46,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:51:46,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:51:46,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:51:46,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:51:46,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:51:46,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:51:46,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:51:46,597 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 00:51:46,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:51:46,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:51:46,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:51:46,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:51:46,626 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:51:46,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:51:46,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:51:46,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:51:46,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:51:46,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:51:46,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:51:46,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:51:46,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:51:46,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:51:46,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:51:46,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:51:46,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:51:46,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:51:46,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:51:46,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:51:46,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:51:46,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:51:46,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:51:46,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:51:46,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:51:46,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:51:46,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:51:46,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:51:46,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:51:46,631 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:51:47,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:51:47,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:51:47,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:51:47,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:51:47,155 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:51:47,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 00:51:47,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2680f2be8/dab0bdc73f444bc78538fcac2d333cbb/FLAGd86e2b3d2 [2020-09-25 00:51:47,754 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:51:47,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 00:51:47,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2680f2be8/dab0bdc73f444bc78538fcac2d333cbb/FLAGd86e2b3d2 [2020-09-25 00:51:48,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2680f2be8/dab0bdc73f444bc78538fcac2d333cbb [2020-09-25 00:51:48,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:51:48,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:51:48,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:51:48,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:51:48,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:51:48,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ebb096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48, skipping insertion in model container [2020-09-25 00:51:48,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:51:48,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:51:48,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:51:48,375 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:51:48,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:51:48,417 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:51:48,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48 WrapperNode [2020-09-25 00:51:48,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:51:48,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:51:48,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:51:48,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:51:48,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (1/1) ... [2020-09-25 00:51:48,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:51:48,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:51:48,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:51:48,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:51:48,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (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 00:51:48,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:51:48,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:51:48,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-25 00:51:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:51:48,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:51:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:51:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-25 00:51:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:51:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:51:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:51:48,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:51:48,879 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:51:48,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:51:48 BoogieIcfgContainer [2020-09-25 00:51:48,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:51:48,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:51:48,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:51:48,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:51:48,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:51:48" (1/3) ... [2020-09-25 00:51:48,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2517960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:51:48, skipping insertion in model container [2020-09-25 00:51:48,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:48" (2/3) ... [2020-09-25 00:51:48,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2517960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:51:48, skipping insertion in model container [2020-09-25 00:51:48,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:51:48" (3/3) ... [2020-09-25 00:51:48,899 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-09-25 00:51:48,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:51:48,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:51:48,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:51:49,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:51:49,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:51:49,017 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:51:49,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:51:49,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:51:49,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:51:49,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:51:49,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:51:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 00:51:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 00:51:49,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:51:49,056 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 00:51:49,056 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:51:49,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:51:49,065 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-25 00:51:49,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:51:49,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007861591] [2020-09-25 00:51:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:51:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:51:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:49,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 00:51:49,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:51:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 00:51:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 00:51:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:51:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:51:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:49,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:49,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:51:49,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:51:49,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:49,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:51:49,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:49,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:51:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:51:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:49,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:49,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:51:49,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:49,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 00:51:49,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:51:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:51:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:51:49,641 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 00:51:49,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007861591] [2020-09-25 00:51:49,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:51:49,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:51:49,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640327089] [2020-09-25 00:51:49,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:51:49,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:51:49,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:51:49,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:51:49,675 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-25 00:51:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:51:49,909 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-25 00:51:49,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:51:49,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 00:51:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:51:49,926 INFO L225 Difference]: With dead ends: 59 [2020-09-25 00:51:49,927 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 00:51:49,932 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 00:51:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 00:51:49,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-25 00:51:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 00:51:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-09-25 00:51:49,996 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2020-09-25 00:51:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:51:49,997 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-09-25 00:51:49,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:51:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-09-25 00:51:50,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:51:50,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:51:50,001 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 00:51:50,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:51:50,002 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:51:50,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:51:50,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-25 00:51:50,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:51:50,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042567364] [2020-09-25 00:51:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:51:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:50,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:51:50,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 00:51:50,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:51:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 00:51:50,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:51:50,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:51:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:51:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:50,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:50,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:51:50,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:51:50,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:51:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:51:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:51:50,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:51:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:50,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:50,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:51:50,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:50,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 00:51:50,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:50,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:51:50,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:50,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:51:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:51:50,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:51:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:50,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:50,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:51:50,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:50,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:51:50,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:51:50,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:50,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:51:50,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:51:50,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042567364] [2020-09-25 00:51:50,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:51:50,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:51:50,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429518868] [2020-09-25 00:51:50,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:51:50,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:51:50,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:51:50,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:51:50,519 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-09-25 00:51:50,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:51:50,752 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 00:51:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:51:50,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 00:51:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:51:50,755 INFO L225 Difference]: With dead ends: 50 [2020-09-25 00:51:50,756 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 00:51:50,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:51:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 00:51:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 00:51:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:51:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-09-25 00:51:50,768 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2020-09-25 00:51:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:51:50,768 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-09-25 00:51:50,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:51:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-09-25 00:51:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 00:51:50,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:51:50,771 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 00:51:50,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:51:50,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:51:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:51:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2094172607, now seen corresponding path program 1 times [2020-09-25 00:51:50,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:51:50,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364745981] [2020-09-25 00:51:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:51:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:51,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:51,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:51:51,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:51:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 976 [2020-09-25 00:51:51,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:51:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 00:51:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:51:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:51:51,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:51:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:51,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:51,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:51:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:51:51,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:51:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:51:51,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:51:51,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:51:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:51,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:51,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:51,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:51:51,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:51:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 00:51:51,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:51:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:51:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:51:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:51,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:51:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:52,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:52,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:51:52,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:52,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:51:52,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:51:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:51:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:51:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:52,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:52,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:51:52,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:51:52,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:51:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:51:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:51:52,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:51:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 00:51:52,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364745981] [2020-09-25 00:51:52,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:51:52,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:51:52,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186036885] [2020-09-25 00:51:52,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:51:52,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:51:52,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:51:52,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:51:52,093 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2020-09-25 00:51:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:51:52,280 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2020-09-25 00:51:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:51:52,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 00:51:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:51:52,289 INFO L225 Difference]: With dead ends: 103 [2020-09-25 00:51:52,289 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 00:51:52,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:51:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 00:51:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-09-25 00:51:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 00:51:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2020-09-25 00:51:52,310 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 43 [2020-09-25 00:51:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:51:52,311 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2020-09-25 00:51:52,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:51:52,311 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2020-09-25 00:51:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 00:51:52,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:51:52,315 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 00:51:52,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:51:52,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:51:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:51:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-25 00:51:52,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:51:52,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382357251] [2020-09-25 00:51:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:51:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:52,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:52,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 00:51:52,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:52,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 00:51:52,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:51:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 00:51:52,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:51:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:51:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:52,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:52,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:51:52,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:51:52,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:51:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:51:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:52,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:51:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:52,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:52,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:51:52,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:52,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 00:51:52,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:51:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:51:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:51:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:53,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:51:53,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 00:51:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:51:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:51:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:51:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:53,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:53,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:51:53,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:53,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:51:53,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:51:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:51:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:51:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:53,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:51:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:51:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:51:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:51:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:51:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 00:51:53,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382357251] [2020-09-25 00:51:53,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:51:53,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:51:53,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638406745] [2020-09-25 00:51:53,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:51:53,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:51:53,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:51:53,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:51:53,257 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 13 states. [2020-09-25 00:51:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:51:53,924 INFO L93 Difference]: Finished difference Result 180 states and 268 transitions. [2020-09-25 00:51:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 00:51:53,925 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-09-25 00:51:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:51:53,932 INFO L225 Difference]: With dead ends: 180 [2020-09-25 00:51:53,932 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 00:51:53,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2020-09-25 00:51:53,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 00:51:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 94. [2020-09-25 00:51:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 00:51:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2020-09-25 00:51:53,965 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 53 [2020-09-25 00:51:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:51:53,965 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2020-09-25 00:51:53,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:51:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2020-09-25 00:51:53,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:51:53,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:51:53,970 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 00:51:53,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:51:53,971 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:51:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:51:53,971 INFO L82 PathProgramCache]: Analyzing trace with hash 358541405, now seen corresponding path program 2 times [2020-09-25 00:51:53,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:51:53,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130936521] [2020-09-25 00:51:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:51:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:58,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:58,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 00:51:58,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:51:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:51:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:51:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 00:51:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:51:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:51:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:51:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:59,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:51:59,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:51:59,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:51:59,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:51:59,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:51:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:51:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:51:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:51:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:51:59,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:51:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:51:59,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:51:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:00,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:04,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:04,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:52:04,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:52:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:52:04,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:52:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:52:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 00:52:04,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:04,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:04,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:52:04,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 00:52:04,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:52:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:52:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:04,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:04,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:04,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:04,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:04,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:52:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:04,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:52:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:04,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:04,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:52:04,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 00:52:04,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:52:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:52:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:04,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:04,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:04,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:52:04,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:52:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:52:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 00:52:04,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130936521] [2020-09-25 00:52:04,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:04,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:52:04,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969560354] [2020-09-25 00:52:04,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:52:04,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:04,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:52:04,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:52:04,299 INFO L87 Difference]: Start difference. First operand 94 states and 131 transitions. Second operand 11 states. [2020-09-25 00:52:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:04,616 INFO L93 Difference]: Finished difference Result 189 states and 320 transitions. [2020-09-25 00:52:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:52:04,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 00:52:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:04,621 INFO L225 Difference]: With dead ends: 189 [2020-09-25 00:52:04,621 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 00:52:04,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:52:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 00:52:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2020-09-25 00:52:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 00:52:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 140 transitions. [2020-09-25 00:52:04,668 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 140 transitions. Word has length 63 [2020-09-25 00:52:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:04,669 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 140 transitions. [2020-09-25 00:52:04,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:52:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 140 transitions. [2020-09-25 00:52:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:52:04,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:04,677 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 00:52:04,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:52:04,678 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:04,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:04,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1096450289, now seen corresponding path program 3 times [2020-09-25 00:52:04,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:04,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819821977] [2020-09-25 00:52:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:04,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 00:52:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-25 00:52:05,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 00:52:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 00:52:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:52:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:05,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:05,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:05,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:05,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:05,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:52:05,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:05,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:05,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:52:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:05,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:05,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:05,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:52:05,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:05,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 00:52:05,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:52:05,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:05,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 00:52:05,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:05,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:05,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:52:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 00:52:05,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:52:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:52:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:05,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:52:05,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 00:52:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:52:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:52:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:05,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:05,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:05,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:52:05,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:52:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:05,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:05,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:05,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:05,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:05,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:52:05,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:05,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:05,810 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 00:52:05,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819821977] [2020-09-25 00:52:05,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:05,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:52:05,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478459515] [2020-09-25 00:52:05,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:52:05,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:05,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:52:05,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:52:05,816 INFO L87 Difference]: Start difference. First operand 98 states and 140 transitions. Second operand 12 states. [2020-09-25 00:52:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:06,240 INFO L93 Difference]: Finished difference Result 172 states and 251 transitions. [2020-09-25 00:52:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:52:06,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-25 00:52:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:06,246 INFO L225 Difference]: With dead ends: 172 [2020-09-25 00:52:06,246 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 00:52:06,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-09-25 00:52:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 00:52:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 101. [2020-09-25 00:52:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 00:52:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2020-09-25 00:52:06,286 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 63 [2020-09-25 00:52:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:06,287 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2020-09-25 00:52:06,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:52:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2020-09-25 00:52:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 00:52:06,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:06,291 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:06,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:52:06,292 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:06,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:06,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1881914974, now seen corresponding path program 4 times [2020-09-25 00:52:06,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:06,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586998998] [2020-09-25 00:52:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:06,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:11,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:11,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 00:52:11,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:52:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:52:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:52:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 00:52:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:52:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:11,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:11,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:11,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:52:11,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:52:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:16,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:16,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 00:52:16,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:52:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 00:52:16,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:16,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:52:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 00:52:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:52:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:16,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:16,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:52:16,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:16,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 00:52:16,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:52:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:52:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:16,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:16,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:16,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:52:16,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 00:52:16,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:52:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:52:16,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:16,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:16,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:16,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:52:16,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:16,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:52:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:16,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:16,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:16,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:16,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:16,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:52:16,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:52:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:16,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:16,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 00:52:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:16,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:52:16,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 00:52:16,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:52:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:52:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:16,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:16,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:16,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:16,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:52:16,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:52:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:52:16,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 37 proven. 33 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 00:52:16,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586998998] [2020-09-25 00:52:16,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:16,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:52:16,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652784491] [2020-09-25 00:52:16,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:52:16,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:16,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:52:16,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:52:16,885 INFO L87 Difference]: Start difference. First operand 101 states and 142 transitions. Second operand 12 states. [2020-09-25 00:52:17,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:17,341 INFO L93 Difference]: Finished difference Result 291 states and 490 transitions. [2020-09-25 00:52:17,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:52:17,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-09-25 00:52:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:17,346 INFO L225 Difference]: With dead ends: 291 [2020-09-25 00:52:17,346 INFO L226 Difference]: Without dead ends: 203 [2020-09-25 00:52:17,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2020-09-25 00:52:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-25 00:52:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 137. [2020-09-25 00:52:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-25 00:52:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 201 transitions. [2020-09-25 00:52:17,390 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 201 transitions. Word has length 82 [2020-09-25 00:52:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:17,390 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 201 transitions. [2020-09-25 00:52:17,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:52:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 201 transitions. [2020-09-25 00:52:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 00:52:17,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:17,393 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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 00:52:17,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:52:17,394 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:17,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1350454845, now seen corresponding path program 5 times [2020-09-25 00:52:17,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:17,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016044626] [2020-09-25 00:52:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:17,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:19,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:22,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:22,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 00:52:22,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:52:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 00:52:22,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:52:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 00:52:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:52:22,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:22,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:22,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:22,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:52:22,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:22,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:52:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:23,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:23,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:27,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:27,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 00:52:27,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:52:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:52:27,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:52:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 00:52:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 00:52:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:27,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:32,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:32,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 00:52:32,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:52:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 00:52:32,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:52:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:52:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:52:32,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:32,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:37,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:37,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 00:52:37,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:52:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:52:37,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:52:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:52:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:52:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:37,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:37,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:37,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:52:37,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:52:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:37,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:38,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:38,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:52:38,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:38,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 00:52:38,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:52:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:38,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 00:52:38,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:38,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:38,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:52:38,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-25 00:52:38,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:52:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 00:52:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:38,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:38,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:52:38,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:52:38,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:52:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:38,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:52:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:38,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:38,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:38,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:52:38,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:38,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:52:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:38,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:38,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:38,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:52:38,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:52:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:38,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 00:52:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:38,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:38,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:38,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 00:52:38,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 00:52:38,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:52:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:52:38,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:38,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:52:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:38,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:38,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:38,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:52:38,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:52:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:52:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 133 proven. 91 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-09-25 00:52:38,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016044626] [2020-09-25 00:52:38,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:38,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:52:38,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421604718] [2020-09-25 00:52:38,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:52:38,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:38,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:52:38,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:52:38,706 INFO L87 Difference]: Start difference. First operand 137 states and 201 transitions. Second operand 12 states. [2020-09-25 00:52:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:39,086 INFO L93 Difference]: Finished difference Result 202 states and 356 transitions. [2020-09-25 00:52:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:52:39,086 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 121 [2020-09-25 00:52:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:39,087 INFO L225 Difference]: With dead ends: 202 [2020-09-25 00:52:39,087 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:52:39,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-09-25 00:52:39,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:52:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:52:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:52:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:52:39,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2020-09-25 00:52:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:39,091 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:52:39,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:52:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:52:39,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:52:39,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:52:39,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:52:40,091 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 12 [2020-09-25 00:52:40,167 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 00:52:40,168 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:52:40,168 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:52:40,168 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:52:40,168 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:52:40,168 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:52:40,168 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-09-25 00:52:40,170 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (or (not (<= 0 |ackermann_#in~m|)) (<= 1 |ackermann_#in~m|)) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-09-25 00:52:40,170 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-09-25 00:52:40,170 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 00:52:40,170 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~n| ackermann_~n) (= |ackermann_#in~n| 0) (= ackermann_~m |ackermann_#in~m|)) [2020-09-25 00:52:40,170 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (and (<= 2 |ackermann_#t~ret1|) (<= 1 |ackermann_#in~m|) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-09-25 00:52:40,170 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 00:52:40,170 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 00:52:40,171 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 00:52:40,171 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 00:52:40,171 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 00:52:40,171 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 00:52:40,171 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 00:52:40,171 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 00:52:40,171 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-25 00:52:40,172 INFO L268 CegarLoopResult]: For program point L22-6(line 22) no Hoare annotation was computed. [2020-09-25 00:52:40,172 INFO L268 CegarLoopResult]: For program point L15(lines 15 23) no Hoare annotation was computed. [2020-09-25 00:52:40,172 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-09-25 00:52:40,172 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 00:52:40,172 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 00:52:40,172 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 00:52:40,172 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 00:52:40,172 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 00:52:40,173 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 00:52:40,173 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-09-25 00:52:40,174 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-09-25 00:52:40,175 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 00:52:40,175 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 00:52:40,175 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-09-25 00:52:40,175 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 00:52:40,175 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 00:52:40,175 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 00:52:40,175 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 00:52:40,176 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-09-25 00:52:40,176 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-09-25 00:52:40,176 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-09-25 00:52:40,176 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-25 00:52:40,176 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-09-25 00:52:40,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:52:40 BoogieIcfgContainer [2020-09-25 00:52:40,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:52:40,200 INFO L168 Benchmark]: Toolchain (without parser) took 52087.60 ms. Allocated memory was 146.8 MB in the beginning and 440.9 MB in the end (delta: 294.1 MB). Free memory was 102.0 MB in the beginning and 229.8 MB in the end (delta: -127.7 MB). Peak memory consumption was 166.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:52:40,201 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 00:52:40,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.75 ms. Allocated memory is still 146.8 MB. Free memory was 101.2 MB in the beginning and 91.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:52:40,203 INFO L168 Benchmark]: Boogie Preprocessor took 35.53 ms. Allocated memory is still 146.8 MB. Free memory was 91.6 MB in the beginning and 90.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:52:40,204 INFO L168 Benchmark]: RCFGBuilder took 430.49 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 90.3 MB in the beginning and 168.9 MB in the end (delta: -78.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:52:40,207 INFO L168 Benchmark]: TraceAbstraction took 51302.72 ms. Allocated memory was 203.9 MB in the beginning and 440.9 MB in the end (delta: 237.0 MB). Free memory was 168.0 MB in the beginning and 229.8 MB in the end (delta: -61.8 MB). Peak memory consumption was 175.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:52:40,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.75 ms. Allocated memory is still 146.8 MB. Free memory was 101.2 MB in the beginning and 91.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.53 ms. Allocated memory is still 146.8 MB. Free memory was 91.6 MB in the beginning and 90.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.49 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 90.3 MB in the beginning and 168.9 MB in the end (delta: -78.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51302.72 ms. Allocated memory was 203.9 MB in the beginning and 440.9 MB in the end (delta: 237.0 MB). Free memory was 168.0 MB in the beginning and 229.8 MB in the end (delta: -61.8 MB). Peak memory consumption was 175.2 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: 50.0s, OverallIterations: 8, TraceHistogramMax: 11, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 403 SDslu, 1417 SDs, 0 SdLazy, 1414 SolverSat, 222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 261 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 228 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 173 PreInvPairs, 262 NumberOfFragments, 47 HoareAnnotationTreeSize, 173 FomulaSimplifications, 10013 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 9 FomulaSimplificationsInter, 976 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 46.3s InterpolantComputationTime, 483 NumberOfCodeBlocks, 483 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 68231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 483/641 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...