/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:26:29,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:26:29,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:26:29,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:26:29,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:26:29,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:26:29,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:26:29,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:26:29,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:26:29,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:26:29,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:26:29,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:26:29,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:26:29,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:26:29,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:26:29,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:26:29,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:26:29,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:26:29,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:26:29,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:26:29,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:26:29,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:26:29,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:26:29,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:26:29,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:26:29,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:26:29,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:26:29,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:26:29,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:26:29,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:26:29,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:26:29,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:26:29,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:26:29,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:26:29,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:26:29,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:26:29,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:26:29,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:26:29,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:26:29,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:26:29,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:26:29,619 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 [2020-09-21 11:26:29,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:26:29,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:26:29,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:26:29,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:26:29,657 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:26:29,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:26:29,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:26:29,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:26:29,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:26:29,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:26:29,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:26:29,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:26:29,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:26:29,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:26:29,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:26:29,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:26:29,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:26:29,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:26:29,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:26:29,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:26:29,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:26:29,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:26:29,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:26:29,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:26:29,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:26:29,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:26:29,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:26:29,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:26:29,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:26:29,665 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:26:30,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:26:30,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:26:30,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:26:30,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:26:30,195 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:26:30,196 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-09-21 11:26:30,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d375244a/12c957f538d04acc8a705d226afdbc44/FLAG5b28a914f [2020-09-21 11:26:30,936 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:26:30,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-09-21 11:26:30,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d375244a/12c957f538d04acc8a705d226afdbc44/FLAG5b28a914f [2020-09-21 11:26:31,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d375244a/12c957f538d04acc8a705d226afdbc44 [2020-09-21 11:26:31,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:26:31,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:26:31,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:26:31,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:26:31,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:26:31,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:31,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31, skipping insertion in model container [2020-09-21 11:26:31,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:31,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:26:31,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:26:31,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:26:31,747 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:26:31,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:26:31,965 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:26:31,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31 WrapperNode [2020-09-21 11:26:31,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:26:31,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:26:31,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:26:31,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:26:31,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:31,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:32,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:32,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:32,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:32,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:32,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (1/1) ... [2020-09-21 11:26:32,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:26:32,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:26:32,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:26:32,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:26:32,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (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 [2020-09-21 11:26:32,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:26:32,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:26:32,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 11:26:32,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:26:32,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 11:26:32,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:26:32,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:26:32,170 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:26:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:26:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:26:32,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:26:33,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:26:33,446 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:26:33,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:26:33 BoogieIcfgContainer [2020-09-21 11:26:33,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:26:33,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:26:33,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:26:33,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:26:33,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:26:31" (1/3) ... [2020-09-21 11:26:33,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3657346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:26:33, skipping insertion in model container [2020-09-21 11:26:33,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:26:31" (2/3) ... [2020-09-21 11:26:33,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3657346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:26:33, skipping insertion in model container [2020-09-21 11:26:33,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:26:33" (3/3) ... [2020-09-21 11:26:33,476 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label43.c [2020-09-21 11:26:33,488 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:26:33,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:26:33,523 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:26:33,556 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:26:33,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:26:33,557 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:26:33,557 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:26:33,557 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:26:33,557 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:26:33,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:26:33,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:26:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-09-21 11:26:33,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-21 11:26:33,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:26:33,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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] [2020-09-21 11:26:33,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:26:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:26:33,609 INFO L82 PathProgramCache]: Analyzing trace with hash 389606425, now seen corresponding path program 1 times [2020-09-21 11:26:33,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:26:33,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690520507] [2020-09-21 11:26:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:26:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:34,056 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:34,056 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:34,056 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:34,057 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:34,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-21 11:26:34,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-21 11:26:34,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:26:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:26:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 11:26:34,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:26:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:26:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:34,360 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:34,360 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:34,360 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:34,361 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:34,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:26:34,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:26:34,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:26:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:26:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 11:26:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:26:34,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690520507] [2020-09-21 11:26:34,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:26:34,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:26:34,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398718593] [2020-09-21 11:26:34,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:26:34,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:26:34,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:26:34,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:26:34,479 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 5 states. [2020-09-21 11:26:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:26:36,946 INFO L93 Difference]: Finished difference Result 859 states and 1466 transitions. [2020-09-21 11:26:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:26:36,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-09-21 11:26:36,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:26:36,972 INFO L225 Difference]: With dead ends: 859 [2020-09-21 11:26:36,972 INFO L226 Difference]: Without dead ends: 495 [2020-09-21 11:26:36,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:26:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-09-21 11:26:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 477. [2020-09-21 11:26:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-09-21 11:26:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 702 transitions. [2020-09-21 11:26:37,102 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 702 transitions. Word has length 91 [2020-09-21 11:26:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:26:37,103 INFO L479 AbstractCegarLoop]: Abstraction has 477 states and 702 transitions. [2020-09-21 11:26:37,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:26:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 702 transitions. [2020-09-21 11:26:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 11:26:37,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:26:37,115 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-09-21 11:26:37,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:26:37,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:26:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:26:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1705382370, now seen corresponding path program 1 times [2020-09-21 11:26:37,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:26:37,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803082235] [2020-09-21 11:26:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:26:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:37,312 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:37,313 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:37,313 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:37,313 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:37,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 11:26:37,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 11:26:37,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:26:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:26:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:26:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:26:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:37,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:37,484 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:37,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:37,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:37,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:26:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:26:37,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:26:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:26:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:26:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:26:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:37,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:37,550 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:37,550 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:37,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:37,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:26:37,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:26:37,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:26:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:26:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:26:37,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:26:37,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803082235] [2020-09-21 11:26:37,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:26:37,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:26:37,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452204105] [2020-09-21 11:26:37,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:26:37,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:26:37,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:26:37,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:26:37,605 INFO L87 Difference]: Start difference. First operand 477 states and 702 transitions. Second operand 8 states. [2020-09-21 11:26:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:26:40,104 INFO L93 Difference]: Finished difference Result 1710 states and 2590 transitions. [2020-09-21 11:26:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:26:40,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-09-21 11:26:40,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:26:40,116 INFO L225 Difference]: With dead ends: 1710 [2020-09-21 11:26:40,117 INFO L226 Difference]: Without dead ends: 1239 [2020-09-21 11:26:40,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:26:40,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-09-21 11:26:40,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1224. [2020-09-21 11:26:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-09-21 11:26:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1646 transitions. [2020-09-21 11:26:40,195 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1646 transitions. Word has length 99 [2020-09-21 11:26:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:26:40,195 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 1646 transitions. [2020-09-21 11:26:40,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:26:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1646 transitions. [2020-09-21 11:26:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-21 11:26:40,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:26:40,207 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-09-21 11:26:40,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:26:40,207 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:26:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:26:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash 57915152, now seen corresponding path program 1 times [2020-09-21 11:26:40,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:26:40,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840835690] [2020-09-21 11:26:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:26:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:40,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:40,287 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:40,288 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:40,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:40,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-21 11:26:40,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:40,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:26:40,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:26:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 11:26:40,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-21 11:26:40,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:40,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:26:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:40,400 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:40,400 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:40,400 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:26:40,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:40,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:26:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:26:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:26:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:26:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:40,431 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:40,431 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:40,431 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:40,432 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:40,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:26:40,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:40,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:26:40,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:26:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:26:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:26:40,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840835690] [2020-09-21 11:26:40,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:26:40,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:26:40,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526183764] [2020-09-21 11:26:40,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:26:40,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:26:40,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:26:40,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:26:40,458 INFO L87 Difference]: Start difference. First operand 1224 states and 1646 transitions. Second operand 5 states. [2020-09-21 11:26:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:26:41,727 INFO L93 Difference]: Finished difference Result 3328 states and 4621 transitions. [2020-09-21 11:26:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:26:41,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-09-21 11:26:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:26:41,742 INFO L225 Difference]: With dead ends: 3328 [2020-09-21 11:26:41,742 INFO L226 Difference]: Without dead ends: 2110 [2020-09-21 11:26:41,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:26:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2020-09-21 11:26:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2106. [2020-09-21 11:26:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-09-21 11:26:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2842 transitions. [2020-09-21 11:26:41,837 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2842 transitions. Word has length 104 [2020-09-21 11:26:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:26:41,838 INFO L479 AbstractCegarLoop]: Abstraction has 2106 states and 2842 transitions. [2020-09-21 11:26:41,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:26:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2842 transitions. [2020-09-21 11:26:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-21 11:26:41,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:26:41,845 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-09-21 11:26:41,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:26:41,846 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:26:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:26:41,846 INFO L82 PathProgramCache]: Analyzing trace with hash -591638038, now seen corresponding path program 1 times [2020-09-21 11:26:41,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:26:41,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790543530] [2020-09-21 11:26:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:26:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:41,909 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:41,910 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:41,910 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:41,911 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:41,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-21 11:26:41,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:41,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:26:41,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:26:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:26:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-21 11:26:41,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:26:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:26:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:42,060 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:42,060 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:42,060 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:42,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:42,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:26:42,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:42,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:26:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:26:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:26:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:26:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:42,086 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:42,086 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:42,086 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:42,087 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:42,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 11:26:42,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:26:42,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:26:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:26:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:26:42,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790543530] [2020-09-21 11:26:42,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:26:42,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:26:42,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288082343] [2020-09-21 11:26:42,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:26:42,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:26:42,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:26:42,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:26:42,115 INFO L87 Difference]: Start difference. First operand 2106 states and 2842 transitions. Second operand 5 states. [2020-09-21 11:26:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:26:43,549 INFO L93 Difference]: Finished difference Result 5084 states and 7083 transitions. [2020-09-21 11:26:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:26:43,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-09-21 11:26:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:26:43,569 INFO L225 Difference]: With dead ends: 5084 [2020-09-21 11:26:43,569 INFO L226 Difference]: Without dead ends: 2984 [2020-09-21 11:26:43,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:26:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-09-21 11:26:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2979. [2020-09-21 11:26:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2979 states. [2020-09-21 11:26:43,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3917 transitions. [2020-09-21 11:26:43,695 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3917 transitions. Word has length 105 [2020-09-21 11:26:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:26:43,697 INFO L479 AbstractCegarLoop]: Abstraction has 2979 states and 3917 transitions. [2020-09-21 11:26:43,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:26:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3917 transitions. [2020-09-21 11:26:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-21 11:26:43,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:26:43,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:26:43,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:26:43,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:26:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:26:43,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1928196099, now seen corresponding path program 1 times [2020-09-21 11:26:43,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:26:43,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851369021] [2020-09-21 11:26:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:26:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:43,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:43,758 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:43,759 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:43,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:43,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 11:26:43,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:26:43,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:26:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:26:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:26:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:43,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:26:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:43,832 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:43,832 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:43,832 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:43,832 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:43,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:26:43,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:26:43,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:26:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:26:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:26:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:43,862 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:43,862 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:43,863 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:43,863 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:43,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:26:43,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:43,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:26:43,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:43,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:26:43,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:43,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:26:43,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:43,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 11:26:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:43,891 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:43,891 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:43,891 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:43,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:26:43,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:43,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:26:43,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:26:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:26:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:26:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:26:43,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851369021] [2020-09-21 11:26:43,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:26:43,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:26:43,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353290687] [2020-09-21 11:26:43,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:26:43,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:26:43,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:26:43,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:26:43,928 INFO L87 Difference]: Start difference. First operand 2979 states and 3917 transitions. Second operand 7 states. [2020-09-21 11:26:45,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:26:45,483 INFO L93 Difference]: Finished difference Result 5745 states and 7924 transitions. [2020-09-21 11:26:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:26:45,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-09-21 11:26:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:26:45,500 INFO L225 Difference]: With dead ends: 5745 [2020-09-21 11:26:45,500 INFO L226 Difference]: Without dead ends: 2772 [2020-09-21 11:26:45,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:26:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2020-09-21 11:26:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2132. [2020-09-21 11:26:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2020-09-21 11:26:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2594 transitions. [2020-09-21 11:26:45,595 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2594 transitions. Word has length 111 [2020-09-21 11:26:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:26:45,595 INFO L479 AbstractCegarLoop]: Abstraction has 2132 states and 2594 transitions. [2020-09-21 11:26:45,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:26:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2594 transitions. [2020-09-21 11:26:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-21 11:26:45,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:26:45,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:26:45,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:26:45,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:26:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:26:45,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1171140075, now seen corresponding path program 1 times [2020-09-21 11:26:45,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:26:45,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263687971] [2020-09-21 11:26:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:26:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:45,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:45,642 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:45,642 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:45,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:45,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 11:26:45,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:45,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:26:45,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:26:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 11:26:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:26:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:45,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:26:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:45,718 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:45,719 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:45,719 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:45,719 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:45,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:26:45,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:26:45,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:26:45,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:45,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:26:45,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:45,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:26:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:45,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:45,745 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:45,745 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:45,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:45,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:26:45,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:26:45,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:26:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:26:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:26:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:45,765 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:45,766 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:45,766 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:45,766 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:45,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:26:45,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:26:45,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:26:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:26:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:26:45,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:26:45,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263687971] [2020-09-21 11:26:45,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:26:45,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:26:45,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120386844] [2020-09-21 11:26:45,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:26:45,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:26:45,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:26:45,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:26:45,820 INFO L87 Difference]: Start difference. First operand 2132 states and 2594 transitions. Second operand 7 states. [2020-09-21 11:26:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:26:47,353 INFO L93 Difference]: Finished difference Result 4446 states and 5447 transitions. [2020-09-21 11:26:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:26:47,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-09-21 11:26:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:26:47,367 INFO L225 Difference]: With dead ends: 4446 [2020-09-21 11:26:47,367 INFO L226 Difference]: Without dead ends: 2320 [2020-09-21 11:26:47,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:26:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2020-09-21 11:26:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2304. [2020-09-21 11:26:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2020-09-21 11:26:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 2793 transitions. [2020-09-21 11:26:47,460 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 2793 transitions. Word has length 112 [2020-09-21 11:26:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:26:47,460 INFO L479 AbstractCegarLoop]: Abstraction has 2304 states and 2793 transitions. [2020-09-21 11:26:47,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:26:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 2793 transitions. [2020-09-21 11:26:47,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-21 11:26:47,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:26:47,468 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:26:47,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:26:47,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:26:47,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:26:47,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1982876518, now seen corresponding path program 1 times [2020-09-21 11:26:47,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:26:47,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558114831] [2020-09-21 11:26:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:26:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:47,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 9 [2020-09-21 11:26:47,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -14 [2020-09-21 11:26:47,611 FATAL L256 erpolLogProxyWrapper]: Difference in width: 100 [2020-09-21 11:26:47,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:47,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 11:26:47,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:47,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 11:26:47,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:47,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:26:47,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:26:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:26:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:47,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:26:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:47,697 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:47,697 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:47,698 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:26:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:26:47,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:26:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:47,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:26:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:47,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:26:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:47,722 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:47,723 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:47,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:47,724 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:47,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:26:47,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:26:47,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:26:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:26:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:47,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 11:26:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:47,736 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:47,736 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:47,737 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:26:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:26:47,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:26:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:26:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:26:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 11:26:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:26:47,760 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:26:47,760 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:26:47,760 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:26:47,760 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:26:47,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:26:47,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:26:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:26:47,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:26:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:26:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:26:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:26:47,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:26:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 11:26:47,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558114831] [2020-09-21 11:26:47,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:26:47,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:26:47,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197784267] [2020-09-21 11:26:47,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:26:47,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:26:47,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:26:47,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:26:47,811 INFO L87 Difference]: Start difference. First operand 2304 states and 2793 transitions. Second operand 7 states. [2020-09-21 11:26:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:26:49,640 INFO L93 Difference]: Finished difference Result 5802 states and 7155 transitions. [2020-09-21 11:26:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:26:49,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-09-21 11:26:49,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:26:49,651 INFO L225 Difference]: With dead ends: 5802 [2020-09-21 11:26:49,651 INFO L226 Difference]: Without dead ends: 2461 [2020-09-21 11:26:49,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:26:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2020-09-21 11:26:49,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2433. [2020-09-21 11:26:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2433 states. [2020-09-21 11:26:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2815 transitions. [2020-09-21 11:26:49,724 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2815 transitions. Word has length 120 [2020-09-21 11:26:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:26:49,724 INFO L479 AbstractCegarLoop]: Abstraction has 2433 states and 2815 transitions. [2020-09-21 11:26:49,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:26:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2815 transitions. [2020-09-21 11:26:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-21 11:26:49,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:26:49,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:26:49,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:26:49,731 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:26:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:26:49,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1079124894, now seen corresponding path program 1 times [2020-09-21 11:26:49,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:26:49,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518375558] [2020-09-21 11:26:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:26:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:26:49,790 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:26:49,790 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:26:49,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:26:49,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:26:49 BoogieIcfgContainer [2020-09-21 11:26:49,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:26:49,861 INFO L168 Benchmark]: Toolchain (without parser) took 18676.66 ms. Allocated memory was 138.4 MB in the beginning and 455.1 MB in the end (delta: 316.7 MB). Free memory was 98.7 MB in the beginning and 259.4 MB in the end (delta: -160.7 MB). Peak memory consumption was 155.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:26:49,869 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:26:49,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.82 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 98.0 MB in the beginning and 170.6 MB in the end (delta: -72.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:26:49,872 INFO L168 Benchmark]: Boogie Preprocessor took 115.79 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 165.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:26:49,873 INFO L168 Benchmark]: RCFGBuilder took 1380.60 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 165.6 MB in the beginning and 181.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:26:49,877 INFO L168 Benchmark]: TraceAbstraction took 16391.31 ms. Allocated memory was 233.8 MB in the beginning and 455.1 MB in the end (delta: 221.2 MB). Free memory was 179.5 MB in the beginning and 259.4 MB in the end (delta: -79.9 MB). Peak memory consumption was 141.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:26:49,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.82 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 98.0 MB in the beginning and 170.6 MB in the end (delta: -72.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.79 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 165.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1380.60 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 165.6 MB in the beginning and 181.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16391.31 ms. Allocated memory was 233.8 MB in the beginning and 455.1 MB in the end (delta: 221.2 MB). Free memory was 179.5 MB in the beginning and 259.4 MB in the end (delta: -79.9 MB). Peak memory consumption was 141.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 427]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int a= 1; [L8] int e= 5; [L9] int d= 4; [L10] int f= 6; [L11] int c= 3; [L14] int u = 21; [L15] int v = 22; [L16] int w = 23; [L17] int x = 24; [L18] int y = 25; [L19] int z = 26; [L22] int a25 = 0; [L23] int a11 = 0; [L24] int a28 = 7; [L25] int a19 = 1; [L26] int a21 = 1; [L27] int a17 = 8; [L603] int output = -1; [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL, EXPR calculate_output(input) [L30] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L35] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L38] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L42] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L47] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L50] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L54] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L59] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L65] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L69] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L74] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L82] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L91] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L95] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L99] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L106] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L113] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L119] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L123] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L130] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L134] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L139] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L143] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L148] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L154] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L159] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L165] COND TRUE (((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1)) [L166] a25 = 1 [L167] a28 = 9 [L168] return 26; [L614] RET, EXPR calculate_output(input) [L614] output = calculate_output(input) [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL, EXPR calculate_output(input) [L30] COND TRUE (((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8)) [L31] a28 = 9 [L32] a11 = 1 [L33] a25 = 1 [L34] return -1; [L614] RET, EXPR calculate_output(input) [L614] output = calculate_output(input) [L606] COND TRUE 1 [L609] int input; [L610] input = __VERIFIER_nondet_int() [L611] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L614] CALL calculate_output(input) [L30] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L35] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L38] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L42] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L47] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L50] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L54] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L59] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L65] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L69] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L74] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L82] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L91] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L95] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L99] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L106] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L113] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L119] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L123] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L130] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L134] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L139] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L143] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L148] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L154] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L159] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L165] COND FALSE !((((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1))) [L169] COND FALSE !(((a28==11)&&(((a17==8)&&((((input==6)&&(a21==1))&&(a19==1))&&!(a25==1)))&&!(a11==1)))) [L175] COND FALSE !(((!(a11==1)&&(((a17==8)&&((a21==1)&&((input==3)&&(a28==8))))&&(a19==1)))&&(a25==1))) [L179] COND FALSE !((((a21==1)&&(((a19==1)&&(((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))&&(input==4)))&&(a11==1)))&&(a17==9))) [L185] COND FALSE !((((!(a11==1)&&((a17==8)&&(((input==4)&&(a19==1))&&(a28==8))))&&(a21==1))&&(a25==1))) [L187] COND FALSE !(((a19==1)&&((((((input==4)&&(a21==1))&&(a28==9))&&!(a25==1))&&!(a11==1))&&(a17==8)))) [L189] COND FALSE !(((a17==8)&&((((((input==1)&&(a21==1))&&!(a11==1))&&(a19==1))&&!(a25==1))&&(a28==9)))) [L191] COND FALSE !((((((((input==4)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a21==1))&&(a17==8))&&(a28==10))&&(a19==1))) [L194] COND FALSE !(((!(a25==1)&&((a11==1)&&((a28==8)&&(((a17==9)&&(input==4))&&(a19==1)))))&&(a21==1))) [L198] COND FALSE !((!(a19==1)&&((a17==8)&&((a28==10)&&(((a25==1)&&(!(a11==1)&&(input==5)))&&(a21==1)))))) [L202] COND FALSE !((((((a21==1)&&((input==1)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))))&&(a17==8))&&!(a11==1))&&(a19==1))) [L212] COND FALSE !(((a21==1)&&((((a19==1)&&((a25==1)&&((a28==11)&&(input==6))))&&!(a11==1))&&(a17==8)))) [L215] COND FALSE !((!(a11==1)&&((a19==1)&&((a28==10)&&(((((a25==1)||!(a25==1))&&(input==5))&&(a17==8))&&(a21==1)))))) [L218] COND FALSE !((((((a17==9)&&((((a25==1)||!(a25==1))&&(input==6))&&(a11==1)))&&(a19==1))&&(a21==1))&&(a28==9))) [L223] COND FALSE !((((a17==8)&&(((((input==6)&&(a25==1))&&!(a19==1))&&!(a11==1))&&(a28==10)))&&(a21==1))) [L225] COND FALSE !(((!(a19==1)&&((a17==8)&&(!(a11==1)&&((input==1)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))))&&(a21==1))) [L232] COND FALSE !((((((((input==1)&&(a21==1))&&(a28==9))&&!(a19==1))&&!(a25==1))&&(a17==8))&&!(a11==1))) [L234] COND FALSE !(((a17==8)&&(((!(a11==1)&&((!(a25==1)&&(input==4))&&(a19==1)))&&(a28==7))&&(a21==1)))) [L237] COND FALSE !((!(a11==1)&&(((a17==8)&&((((!(a25==1)&&(a28==11))||((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1))))&&(input==3))&&(a21==1)))&&!(a19==1)))) [L248] COND FALSE !(((((!(a11==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==5)))&&(a21==1))&&!(a19==1))&&(a17==8))) [L253] COND FALSE !((((a17==9)&&(((((input==1)&&((a25==1)||!(a25==1)))&&(a11==1))&&(a21==1))&&(a19==1)))&&(a28==9))) [L259] COND FALSE !((!(a11==1)&&((a19==1)&&(((((a28==9)&&(input==6))&&(a21==1))&&(a17==8))&&!(a25==1))))) [L261] COND FALSE !(((a17==9)&&((a21==1)&&((a11==1)&&(((input==3)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a19==1)))))) [L276] COND FALSE !(((a28==7)&&((a17==8)&&(!(a25==1)&&((a21==1)&&((a19==1)&&((input==5)&&!(a11==1)))))))) [L280] COND FALSE !(((a28==8)&&((a21==1)&&((!(a11==1)&&(((input==1)&&(a17==8))&&(a19==1)))&&(a25==1))))) [L283] COND FALSE !((((((a17==8)&&(((input==6)&&((a25==1)||!(a25==1)))&&(a21==1)))&&(a28==10))&&!(a11==1))&&(a19==1))) [L286] COND FALSE !(((!(a11==1)&&((!(a19==1)&&(((!(a25==1)&&(a28==11))||(((a28==10)&&!(a25==1))||((a25==1)&&(a28==11))))&&(input==5)))&&(a17==8)))&&(a21==1))) [L291] COND FALSE !(((a17==8)&&(((a21==1)&&(!(a11==1)&&((a25==1)&&((a28==8)&&(input==6)))))&&(a19==1)))) [L293] COND FALSE !((((a19==1)&&((a17==8)&&(((!(a25==1)&&(input==5))&&(a21==1))&&!(a11==1))))&&(a28==11))) [L297] COND FALSE !(((a11==1)&&(((a17==9)&&((a28==9)&&((a19==1)&&(((a25==1)||!(a25==1))&&(input==5)))))&&(a21==1)))) [L309] COND FALSE !((((((((input==3)&&(a19==1))&&(a21==1))&&(a17==8))&&!(a25==1))&&(a28==11))&&!(a11==1))) [L314] COND FALSE !(((a19==1)&&((a21==1)&&((((input==5)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a11==1))&&(a17==9))))) [L328] COND FALSE !((((a19==1)&&(((!(a11==1)&&(((a25==1)||!(a25==1))&&(input==3)))&&(a28==10))&&(a21==1)))&&(a17==8))) [L331] COND FALSE !(((!(a11==1)&&(((((input==4)&&(a17==8))&&!(a25==1))&&(a21==1))&&(a28==11)))&&(a19==1))) [L337] COND FALSE !((((!(a19==1)&&(((input==4)&&(((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1)))||(!(a25==1)&&(a28==11))))&&(a21==1)))&&(a17==8))&&!(a11==1))) [L349] COND FALSE !((!(a11==1)&&(((a17==8)&&((((a25==1)&&(input==4))&&(a19==1))&&(a28==11)))&&(a21==1)))) [L354] COND FALSE !((((((a21==1)&&((((a28==8)&&!(a25==1))||((a28==9)&&(a25==1)))&&(input==6)))&&!(a11==1))&&!(a19==1))&&(a17==8))) [L361] COND FALSE !(((a19==1)&&((((a21==1)&&((!(a25==1)&&(input==3))&&(a17==9)))&&(a28==8))&&(a11==1)))) [L368] COND FALSE !(((a17==8)&&(((a21==1)&&(((input==5)&&((!(a25==1)&&(a28==8))||((a28==9)&&(a25==1))))&&(a19==1)))&&!(a11==1)))) [L375] COND FALSE !(((a19==1)&&(((((a17==8)&&((input==5)&&!(a11==1)))&&(a21==1))&&(a25==1))&&(a28==8)))) [L378] COND FALSE !((((!(a11==1)&&((((a21==1)&&(input==4))&&(a28==10))&&(a17==8)))&&!(a19==1))&&(a25==1))) [L380] COND FALSE !(((a28==8)&&(((a19==1)&&((a11==1)&&(!(a25==1)&&((a17==9)&&(input==6)))))&&(a21==1)))) [L389] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==6)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))&&(a17==8))&&!(a19==1)))) [L394] COND FALSE !((((((!(a25==1)&&((a19==1)&&(input==3)))&&(a28==9))&&(a21==1))&&(a17==8))&&!(a11==1))) [L398] COND FALSE !((((a17==8)&&((((input==4)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9))))&&(a21==1))&&!(a19==1)))&&!(a11==1))) [L402] COND FALSE !((((!(a11==1)&&((((a19==1)&&(input==5))&&(a17==8))&&(a21==1)))&&(a28==9))&&!(a25==1))) [L404] COND FALSE !((((a11==1)&&((a19==1)&&((a21==1)&&(((a17==9)&&(input==5))&&!(a25==1)))))&&(a28==8))) [L407] COND FALSE !((!(a11==1)&&((a21==1)&&(((a19==1)&&((a17==8)&&((a25==1)&&(input==5))))&&(a28==11))))) [L409] COND FALSE !(((a19==1)&&((a17==8)&&(((((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))&&!(a11==1))&&(a21==1))))) [L414] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==7))&&!(a19==1))&&(a21==1))&&(a17==8))) [L417] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==10))&&(a19==1))&&(a21==1))&&(a17==8))) [L420] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==8))) [L423] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==7))) [L426] COND TRUE ((((((a25==1)&&(a11==1))&&(a28==9))&&(a19==1))&&(a21==1))&&(a17==8)) [L427] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 274 SDtfs, 3801 SDslu, 357 SDs, 0 SdLazy, 6296 SolverSat, 1051 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2979occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 726 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 875 NumberOfCodeBlocks, 875 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 735 ConstructedInterpolants, 0 QuantifiedInterpolants, 232275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 107/117 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 incorrect! Received shutdown request...