/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/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:25:01,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:25:01,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:25:01,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:25:01,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:25:01,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:25:01,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:25:01,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:25:01,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:25:01,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:25:01,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:25:01,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:25:01,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:25:01,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:25:01,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:25:01,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:25:01,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:25:01,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:25:01,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:25:01,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:25:01,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:25:01,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:25:01,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:25:01,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:25:01,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:25:01,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:25:01,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:25:01,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:25:01,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:25:01,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-21 11:25:01,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:25:01,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:25:01,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:25:01,899 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 11:25:01,945 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:25:01,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:25:01,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:25:01,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:25:01,949 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:25:01,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:25:01,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:25:01,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:25:01,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:25:01,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:25:01,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:25:01,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:25:01,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:25:01,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:25:01,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:25:01,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:25:01,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:25:01,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:25:01,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:25:01,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:25:01,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:25:01,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:25:01,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:25:01,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:25:01,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:25:01,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:25:01,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:25:01,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:25:01,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:25:01,955 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 11:25:02,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:25:02,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:25:02,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:25:02,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:25:02,446 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:25:02,447 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-21 11:25:02,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd026a3f/2001dbd961d241778ff750b726cec910/FLAGad1d70af4 [2020-09-21 11:25:03,187 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:25:03,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-21 11:25:03,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd026a3f/2001dbd961d241778ff750b726cec910/FLAGad1d70af4 [2020-09-21 11:25:03,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd026a3f/2001dbd961d241778ff750b726cec910 [2020-09-21 11:25:03,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:25:03,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:25:03,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:25:03,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:25:03,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:25:03,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:25:03" (1/1) ... [2020-09-21 11:25:03,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbfe068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:03, skipping insertion in model container [2020-09-21 11:25:03,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:25:03" (1/1) ... [2020-09-21 11:25:03,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:25:03,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:25:04,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:25:04,144 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:25:04,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:25:04,269 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:25:04,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04 WrapperNode [2020-09-21 11:25:04,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:25:04,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:25:04,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:25:04,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:25:04,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (1/1) ... [2020-09-21 11:25:04,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (1/1) ... [2020-09-21 11:25:04,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (1/1) ... [2020-09-21 11:25:04,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (1/1) ... [2020-09-21 11:25:04,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (1/1) ... [2020-09-21 11:25:04,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (1/1) ... [2020-09-21 11:25:04,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (1/1) ... [2020-09-21 11:25:04,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:25:04,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:25:04,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:25:04,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:25:04,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (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 11:25:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:25:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:25:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 11:25:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:25:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 11:25:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:25:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:25:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:25:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:25:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:25:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:25:05,790 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:25:05,790 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:25:05,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:25:05 BoogieIcfgContainer [2020-09-21 11:25:05,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:25:05,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:25:05,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:25:05,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:25:05,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:25:03" (1/3) ... [2020-09-21 11:25:05,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f10dcc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:25:05, skipping insertion in model container [2020-09-21 11:25:05,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:25:04" (2/3) ... [2020-09-21 11:25:05,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f10dcc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:25:05, skipping insertion in model container [2020-09-21 11:25:05,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:25:05" (3/3) ... [2020-09-21 11:25:05,811 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-21 11:25:05,827 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:25:05,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:25:05,869 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:25:05,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:25:05,918 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:25:05,918 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:25:05,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:25:05,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:25:05,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:25:05,919 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:25:05,919 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:25:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-09-21 11:25:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 11:25:05,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:05,984 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] [2020-09-21 11:25:05,985 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:05,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1861146994, now seen corresponding path program 1 times [2020-09-21 11:25:06,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:06,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041158489] [2020-09-21 11:25:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:06,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:06,462 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:06,462 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:06,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:06,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-21 11:25:06,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-21 11:25:06,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:25:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:25:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-21 11:25:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:06,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:06,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:06,822 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:06,823 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:06,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:06,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:06,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:06,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:25:06,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:25:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:06,882 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 11:25:06,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041158489] [2020-09-21 11:25:06,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:25:06,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:25:06,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298753760] [2020-09-21 11:25:06,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:25:06,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:06,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:25:06,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:25:06,927 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 5 states. [2020-09-21 11:25:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:08,473 INFO L93 Difference]: Finished difference Result 557 states and 956 transitions. [2020-09-21 11:25:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:25:08,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-09-21 11:25:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:08,495 INFO L225 Difference]: With dead ends: 557 [2020-09-21 11:25:08,496 INFO L226 Difference]: Without dead ends: 286 [2020-09-21 11:25:08,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 11:25:08,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-21 11:25:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2020-09-21 11:25:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-21 11:25:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 402 transitions. [2020-09-21 11:25:08,594 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 402 transitions. Word has length 88 [2020-09-21 11:25:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:08,595 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 402 transitions. [2020-09-21 11:25:08,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:25:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 402 transitions. [2020-09-21 11:25:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-21 11:25:08,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:08,602 INFO L422 BasicCegarLoop]: trace histogram [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 11:25:08,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:25:08,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:08,604 INFO L82 PathProgramCache]: Analyzing trace with hash -136469723, now seen corresponding path program 1 times [2020-09-21 11:25:08,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:08,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713567703] [2020-09-21 11:25:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:08,662 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:08,663 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:08,663 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:08,663 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:08,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 11:25:08,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:25:08,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:25:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:25:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:25:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:08,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:08,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:08,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:08,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:08,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:08,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:08,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:25:08,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:08,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:25:08,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:08,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:08,823 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:08,824 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:08,824 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:08,824 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:08,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:25:08,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:08,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:25:08,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:25:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:25:08,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713567703] [2020-09-21 11:25:08,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:25:08,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:25:08,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404588900] [2020-09-21 11:25:08,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:25:08,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:08,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:25:08,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:25:08,863 INFO L87 Difference]: Start difference. First operand 280 states and 402 transitions. Second operand 8 states. [2020-09-21 11:25:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:10,539 INFO L93 Difference]: Finished difference Result 713 states and 1049 transitions. [2020-09-21 11:25:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:25:10,540 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-09-21 11:25:10,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:10,545 INFO L225 Difference]: With dead ends: 713 [2020-09-21 11:25:10,545 INFO L226 Difference]: Without dead ends: 439 [2020-09-21 11:25:10,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:25:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-21 11:25:10,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 421. [2020-09-21 11:25:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-09-21 11:25:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 590 transitions. [2020-09-21 11:25:10,592 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 590 transitions. Word has length 98 [2020-09-21 11:25:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:10,592 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 590 transitions. [2020-09-21 11:25:10,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:25:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 590 transitions. [2020-09-21 11:25:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 11:25:10,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:10,598 INFO L422 BasicCegarLoop]: trace histogram [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 11:25:10,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:25:10,599 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:10,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash -2049197465, now seen corresponding path program 1 times [2020-09-21 11:25:10,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:10,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89652239] [2020-09-21 11:25:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:10,664 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:10,665 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:10,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:10,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:10,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 11:25:10,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:10,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:25:10,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:10,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:25:10,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 11:25:10,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:10,843 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:10,844 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:10,844 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:10,844 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:10,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:10,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:10,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:10,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:10,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:10,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:10,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:10,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:10,883 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:10,883 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:10,884 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:10,884 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:10,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:25:10,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:25:10,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:10,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:25:10,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:25:10,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89652239] [2020-09-21 11:25:10,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:10,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:25:10,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346536136] [2020-09-21 11:25:10,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:25:10,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:10,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:25:10,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:25:10,912 INFO L87 Difference]: Start difference. First operand 421 states and 590 transitions. Second operand 5 states. [2020-09-21 11:25:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:12,119 INFO L93 Difference]: Finished difference Result 1257 states and 1815 transitions. [2020-09-21 11:25:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:25:12,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-09-21 11:25:12,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:12,130 INFO L225 Difference]: With dead ends: 1257 [2020-09-21 11:25:12,130 INFO L226 Difference]: Without dead ends: 842 [2020-09-21 11:25:12,132 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 11:25:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-09-21 11:25:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 836. [2020-09-21 11:25:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-09-21 11:25:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1170 transitions. [2020-09-21 11:25:12,189 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1170 transitions. Word has length 99 [2020-09-21 11:25:12,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:12,190 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1170 transitions. [2020-09-21 11:25:12,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:25:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1170 transitions. [2020-09-21 11:25:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-21 11:25:12,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:12,199 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:25:12,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:25:12,199 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:12,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:12,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1744209819, now seen corresponding path program 1 times [2020-09-21 11:25:12,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:12,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149434648] [2020-09-21 11:25:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:12,268 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:12,269 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:12,269 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:12,269 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:12,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-21 11:25:12,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:12,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:25:12,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 11:25:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 11:25:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:12,400 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:12,400 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:12,400 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:12,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:12,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:12,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:12,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:12,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:12,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:12,431 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:12,431 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:12,431 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:12,432 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:25:12,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:25:12,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:25:12,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:25:12,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149434648] [2020-09-21 11:25:12,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:12,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:25:12,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014704747] [2020-09-21 11:25:12,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:25:12,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:12,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:25:12,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:25:12,466 INFO L87 Difference]: Start difference. First operand 836 states and 1170 transitions. Second operand 5 states. [2020-09-21 11:25:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:13,791 INFO L93 Difference]: Finished difference Result 2085 states and 2966 transitions. [2020-09-21 11:25:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:25:13,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-09-21 11:25:13,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:13,801 INFO L225 Difference]: With dead ends: 2085 [2020-09-21 11:25:13,803 INFO L226 Difference]: Without dead ends: 842 [2020-09-21 11:25:13,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 11:25:13,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-09-21 11:25:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 836. [2020-09-21 11:25:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-09-21 11:25:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1128 transitions. [2020-09-21 11:25:13,867 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1128 transitions. Word has length 105 [2020-09-21 11:25:13,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:13,867 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1128 transitions. [2020-09-21 11:25:13,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:25:13,867 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1128 transitions. [2020-09-21 11:25:13,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-21 11:25:13,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:13,879 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:25:13,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:25:13,880 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1640976757, now seen corresponding path program 1 times [2020-09-21 11:25:13,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:13,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65030606] [2020-09-21 11:25:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:13,975 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:13,975 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:13,975 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:13,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 11:25:13,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 11:25:13,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:25:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:25:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 11:25:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:14,099 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:14,099 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:14,100 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:14,100 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:14,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:14,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:25:14,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:25:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:14,148 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:14,148 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:14,148 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:14,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:14,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:25:14,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:14,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:25:14,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:25:14,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:25:14,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65030606] [2020-09-21 11:25:14,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:25:14,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:25:14,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229757339] [2020-09-21 11:25:14,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:25:14,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:14,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:25:14,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:25:14,195 INFO L87 Difference]: Start difference. First operand 836 states and 1128 transitions. Second operand 8 states. [2020-09-21 11:25:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:15,723 INFO L93 Difference]: Finished difference Result 2395 states and 3450 transitions. [2020-09-21 11:25:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:25:15,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-09-21 11:25:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:15,737 INFO L225 Difference]: With dead ends: 2395 [2020-09-21 11:25:15,738 INFO L226 Difference]: Without dead ends: 1565 [2020-09-21 11:25:15,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:25:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-09-21 11:25:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1398. [2020-09-21 11:25:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1398 states. [2020-09-21 11:25:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1848 transitions. [2020-09-21 11:25:15,816 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1848 transitions. Word has length 113 [2020-09-21 11:25:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:15,816 INFO L479 AbstractCegarLoop]: Abstraction has 1398 states and 1848 transitions. [2020-09-21 11:25:15,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:25:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1848 transitions. [2020-09-21 11:25:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-21 11:25:15,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:15,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:15,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:25:15,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:15,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:15,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1307592906, now seen corresponding path program 1 times [2020-09-21 11:25:15,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:15,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707853799] [2020-09-21 11:25:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:15,882 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:15,882 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:15,882 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:15,882 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:15,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-21 11:25:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:25:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:25:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-21 11:25:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:15,960 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:15,960 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:15,960 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:15,960 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:15,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:15,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:15,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:15,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:15,988 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:15,989 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:15,989 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:15,989 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:15,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:25:15,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:25:15,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:25:15,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:25:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:16,015 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:16,016 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:16,016 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:16,016 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:16,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:25:16,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:16,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:25:16,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:16,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:16,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:25:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:25:16,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707853799] [2020-09-21 11:25:16,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:16,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:25:16,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669330633] [2020-09-21 11:25:16,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:25:16,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:16,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:25:16,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:25:16,109 INFO L87 Difference]: Start difference. First operand 1398 states and 1848 transitions. Second operand 7 states. [2020-09-21 11:25:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:18,373 INFO L93 Difference]: Finished difference Result 3148 states and 4474 transitions. [2020-09-21 11:25:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:25:18,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-21 11:25:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:18,392 INFO L225 Difference]: With dead ends: 3148 [2020-09-21 11:25:18,392 INFO L226 Difference]: Without dead ends: 1756 [2020-09-21 11:25:18,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:25:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2020-09-21 11:25:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1704. [2020-09-21 11:25:18,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-09-21 11:25:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2212 transitions. [2020-09-21 11:25:18,467 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2212 transitions. Word has length 128 [2020-09-21 11:25:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:18,469 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2212 transitions. [2020-09-21 11:25:18,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:25:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2212 transitions. [2020-09-21 11:25:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-21 11:25:18,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:18,476 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2020-09-21 11:25:18,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:25:18,477 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1735292846, now seen corresponding path program 1 times [2020-09-21 11:25:18,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:18,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148727116] [2020-09-21 11:25:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:18,555 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:18,555 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:18,555 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:18,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-21 11:25:18,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:25:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-21 11:25:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-21 11:25:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:18,686 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:18,686 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:18,687 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:18,687 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:18,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:18,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:18,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:18,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:18,711 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:18,711 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:18,711 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:18,712 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:18,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 11:25:18,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:18,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:25:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:18,729 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:18,729 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:18,729 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:18,730 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:18,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:25:18,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:18,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:25:18,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:25:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 11:25:18,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148727116] [2020-09-21 11:25:18,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:18,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:25:18,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550873662] [2020-09-21 11:25:18,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:25:18,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:18,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:25:18,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:25:18,807 INFO L87 Difference]: Start difference. First operand 1704 states and 2212 transitions. Second operand 5 states. [2020-09-21 11:25:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:19,971 INFO L93 Difference]: Finished difference Result 3801 states and 4935 transitions. [2020-09-21 11:25:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:25:19,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-21 11:25:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:19,987 INFO L225 Difference]: With dead ends: 3801 [2020-09-21 11:25:19,988 INFO L226 Difference]: Without dead ends: 2248 [2020-09-21 11:25:19,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 11:25:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2020-09-21 11:25:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1976. [2020-09-21 11:25:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-21 11:25:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2437 transitions. [2020-09-21 11:25:20,061 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2437 transitions. Word has length 132 [2020-09-21 11:25:20,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:20,062 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 2437 transitions. [2020-09-21 11:25:20,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:25:20,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2437 transitions. [2020-09-21 11:25:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-21 11:25:20,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:20,068 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-21 11:25:20,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:25:20,069 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:20,069 INFO L82 PathProgramCache]: Analyzing trace with hash -273287469, now seen corresponding path program 1 times [2020-09-21 11:25:20,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:20,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911466731] [2020-09-21 11:25:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:20,150 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:20,150 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:20,150 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:20,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:20,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-21 11:25:20,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:20,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:25:20,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:20,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:25:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:25:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-21 11:25:20,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:20,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:20,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:20,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:20,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:20,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:20,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:25:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:25:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:20,320 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:20,321 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:20,321 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:20,321 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:20,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 11:25:20,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:20,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:25:20,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 11:25:20,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:25:20,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911466731] [2020-09-21 11:25:20,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:25:20,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:25:20,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289400686] [2020-09-21 11:25:20,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:25:20,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:20,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:25:20,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:25:20,475 INFO L87 Difference]: Start difference. First operand 1976 states and 2437 transitions. Second operand 7 states. [2020-09-21 11:25:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:21,808 INFO L93 Difference]: Finished difference Result 3960 states and 4893 transitions. [2020-09-21 11:25:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:25:21,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-09-21 11:25:21,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:21,821 INFO L225 Difference]: With dead ends: 3960 [2020-09-21 11:25:21,821 INFO L226 Difference]: Without dead ends: 2129 [2020-09-21 11:25:21,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:25:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2020-09-21 11:25:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2115. [2020-09-21 11:25:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2115 states. [2020-09-21 11:25:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2547 transitions. [2020-09-21 11:25:21,889 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2547 transitions. Word has length 141 [2020-09-21 11:25:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:21,890 INFO L479 AbstractCegarLoop]: Abstraction has 2115 states and 2547 transitions. [2020-09-21 11:25:21,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:25:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2547 transitions. [2020-09-21 11:25:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-21 11:25:21,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:21,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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, 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] [2020-09-21 11:25:21,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:25:21,897 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:21,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:21,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1009304303, now seen corresponding path program 1 times [2020-09-21 11:25:21,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:21,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844366394] [2020-09-21 11:25:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:21,946 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:21,946 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:21,946 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:21,946 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:21,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-21 11:25:21,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:21,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:25:21,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:21,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:25:21,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:25:21,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:22,043 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:22,043 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:22,043 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:22,043 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:22,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:22,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:22,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:22,072 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:22,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:22,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:25:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:25:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:25:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:22,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:25:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:22,093 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:22,094 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:22,094 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:22,094 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:22,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:25:22,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:25:22,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:22,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:25:22,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:22,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:25:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:22,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:22,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:22,137 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:22,137 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:22,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 11:25:22,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:22,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 11:25:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 74 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 11:25:22,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844366394] [2020-09-21 11:25:22,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:22,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:25:22,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370688658] [2020-09-21 11:25:22,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:25:22,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:22,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:25:22,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:25:22,231 INFO L87 Difference]: Start difference. First operand 2115 states and 2547 transitions. Second operand 7 states. [2020-09-21 11:25:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:23,506 INFO L93 Difference]: Finished difference Result 4127 states and 5073 transitions. [2020-09-21 11:25:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:25:23,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-09-21 11:25:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:23,523 INFO L225 Difference]: With dead ends: 4127 [2020-09-21 11:25:23,523 INFO L226 Difference]: Without dead ends: 2008 [2020-09-21 11:25:23,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:25:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2020-09-21 11:25:23,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1706. [2020-09-21 11:25:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-09-21 11:25:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 1945 transitions. [2020-09-21 11:25:23,582 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 1945 transitions. Word has length 161 [2020-09-21 11:25:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:23,582 INFO L479 AbstractCegarLoop]: Abstraction has 1706 states and 1945 transitions. [2020-09-21 11:25:23,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:25:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 1945 transitions. [2020-09-21 11:25:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-21 11:25:23,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:23,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-21 11:25:23,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:25:23,589 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:23,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:23,589 INFO L82 PathProgramCache]: Analyzing trace with hash -496146518, now seen corresponding path program 1 times [2020-09-21 11:25:23,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:23,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089090140] [2020-09-21 11:25:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:23,660 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:25:23,661 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -24 [2020-09-21 11:25:23,661 FATAL L256 erpolLogProxyWrapper]: Difference in width: 24 [2020-09-21 11:25:23,661 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:23,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-21 11:25:23,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:25:23,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:23,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 11:25:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 11:25:23,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:23,757 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:23,757 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:23,757 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:23,757 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:23,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:23,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:23,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:23,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:23,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:23,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:23,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:23,798 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:23,799 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:23,799 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:23,799 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:23,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:25:23,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:23,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:25:23,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:23,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:25:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 11:25:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:23,842 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:23,842 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:23,842 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:23,842 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:23,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 11:25:23,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:25:23,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 11:25:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:25:23,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089090140] [2020-09-21 11:25:23,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:23,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:25:23,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527454193] [2020-09-21 11:25:23,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:25:23,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:25:23,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:25:23,989 INFO L87 Difference]: Start difference. First operand 1706 states and 1945 transitions. Second operand 7 states. [2020-09-21 11:25:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:26,086 INFO L93 Difference]: Finished difference Result 3873 states and 4582 transitions. [2020-09-21 11:25:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:25:26,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-09-21 11:25:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:26,097 INFO L225 Difference]: With dead ends: 3873 [2020-09-21 11:25:26,097 INFO L226 Difference]: Without dead ends: 2314 [2020-09-21 11:25:26,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:25:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2020-09-21 11:25:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2258. [2020-09-21 11:25:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2258 states. [2020-09-21 11:25:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 2542 transitions. [2020-09-21 11:25:26,166 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 2542 transitions. Word has length 160 [2020-09-21 11:25:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:26,167 INFO L479 AbstractCegarLoop]: Abstraction has 2258 states and 2542 transitions. [2020-09-21 11:25:26,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:25:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 2542 transitions. [2020-09-21 11:25:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-21 11:25:26,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:26,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:26,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:25:26,174 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash -82886138, now seen corresponding path program 1 times [2020-09-21 11:25:26,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:26,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216391702] [2020-09-21 11:25:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:26,255 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:26,256 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:26,256 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:26,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:26,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-21 11:25:26,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:25:26,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:26,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 11:25:26,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 11:25:26,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:26,447 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-09-21 11:25:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:26,456 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:26,457 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:26,457 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:26,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:26,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:26,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:26,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:25:26,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:26,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:26,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:26,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:26,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:26,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:26,494 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:26,494 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:26,494 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:26,494 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:26,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:25:26,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:25:26,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-21 11:25:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:26,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 11:25:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:26,551 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:26,552 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:26,552 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:26,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:26,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 11:25:26,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:25:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 11:25:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:25:26,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216391702] [2020-09-21 11:25:26,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:26,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:25:26,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616659489] [2020-09-21 11:25:26,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:25:26,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:26,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:25:26,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:25:26,710 INFO L87 Difference]: Start difference. First operand 2258 states and 2542 transitions. Second operand 7 states. [2020-09-21 11:25:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:28,963 INFO L93 Difference]: Finished difference Result 4161 states and 4845 transitions. [2020-09-21 11:25:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:25:28,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-21 11:25:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:28,973 INFO L225 Difference]: With dead ends: 4161 [2020-09-21 11:25:28,973 INFO L226 Difference]: Without dead ends: 2334 [2020-09-21 11:25:28,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:25:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2020-09-21 11:25:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2258. [2020-09-21 11:25:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2258 states. [2020-09-21 11:25:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 2530 transitions. [2020-09-21 11:25:29,048 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 2530 transitions. Word has length 174 [2020-09-21 11:25:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:29,048 INFO L479 AbstractCegarLoop]: Abstraction has 2258 states and 2530 transitions. [2020-09-21 11:25:29,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:25:29,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 2530 transitions. [2020-09-21 11:25:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-21 11:25:29,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:29,055 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 11:25:29,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:25:29,056 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:29,056 INFO L82 PathProgramCache]: Analyzing trace with hash -2108017008, now seen corresponding path program 1 times [2020-09-21 11:25:29,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:29,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088988979] [2020-09-21 11:25:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:29,122 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:25:29,122 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -41 [2020-09-21 11:25:29,122 FATAL L256 erpolLogProxyWrapper]: Difference in width: 41 [2020-09-21 11:25:29,122 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:29,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-21 11:25:29,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:25:29,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:29,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 11:25:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 11:25:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:29,217 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:29,217 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:29,217 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:29,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:29,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:29,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:29,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:29,254 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:29,254 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:29,254 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:29,255 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:29,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:25:29,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:29,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:25:29,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 11:25:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:25:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:29,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:29,317 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:29,317 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:29,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:29,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 11:25:29,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:25:29,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 11:25:29,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:25:29,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088988979] [2020-09-21 11:25:29,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:29,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:25:29,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440327368] [2020-09-21 11:25:29,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:25:29,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:29,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:25:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:25:29,469 INFO L87 Difference]: Start difference. First operand 2258 states and 2530 transitions. Second operand 7 states. [2020-09-21 11:25:31,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:31,004 INFO L93 Difference]: Finished difference Result 4236 states and 4755 transitions. [2020-09-21 11:25:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:25:31,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-09-21 11:25:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:31,015 INFO L225 Difference]: With dead ends: 4236 [2020-09-21 11:25:31,015 INFO L226 Difference]: Without dead ends: 2272 [2020-09-21 11:25:31,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:25:31,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-09-21 11:25:31,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2260. [2020-09-21 11:25:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2260 states. [2020-09-21 11:25:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 2505 transitions. [2020-09-21 11:25:31,077 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 2505 transitions. Word has length 177 [2020-09-21 11:25:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:31,078 INFO L479 AbstractCegarLoop]: Abstraction has 2260 states and 2505 transitions. [2020-09-21 11:25:31,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:25:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 2505 transitions. [2020-09-21 11:25:31,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-21 11:25:31,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:31,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:31,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:25:31,084 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:31,085 INFO L82 PathProgramCache]: Analyzing trace with hash -239275224, now seen corresponding path program 1 times [2020-09-21 11:25:31,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:31,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158138949] [2020-09-21 11:25:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:31,151 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:31,151 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:31,152 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-21 11:25:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:25:31,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 11:25:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 11:25:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:31,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:31,245 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:31,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:31,246 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:31,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:31,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:31,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:31,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:31,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:31,280 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:31,281 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:31,281 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:31,281 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:31,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:25:31,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:25:31,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 11:25:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:25:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:31,333 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:31,334 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:31,334 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:31,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:31,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 11:25:31,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:25:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:25:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 11:25:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-21 11:25:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 66 [2020-09-21 11:25:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:25:31,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158138949] [2020-09-21 11:25:31,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:31,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:25:31,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178830498] [2020-09-21 11:25:31,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:25:31,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:31,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:25:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:25:31,517 INFO L87 Difference]: Start difference. First operand 2260 states and 2505 transitions. Second operand 7 states. [2020-09-21 11:25:32,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:32,804 INFO L93 Difference]: Finished difference Result 4933 states and 5495 transitions. [2020-09-21 11:25:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:25:32,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-21 11:25:32,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:32,815 INFO L225 Difference]: With dead ends: 4933 [2020-09-21 11:25:32,816 INFO L226 Difference]: Without dead ends: 2683 [2020-09-21 11:25:32,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:25:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2020-09-21 11:25:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2667. [2020-09-21 11:25:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2667 states. [2020-09-21 11:25:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 2932 transitions. [2020-09-21 11:25:32,886 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 2932 transitions. Word has length 182 [2020-09-21 11:25:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:32,886 INFO L479 AbstractCegarLoop]: Abstraction has 2667 states and 2932 transitions. [2020-09-21 11:25:32,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:25:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 2932 transitions. [2020-09-21 11:25:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-21 11:25:32,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:32,894 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 11:25:32,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:25:32,894 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:32,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2033686183, now seen corresponding path program 1 times [2020-09-21 11:25:32,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:32,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395668932] [2020-09-21 11:25:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:32,984 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:32,985 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:32,985 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:32,985 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:32,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-21 11:25:32,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:32,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:25:32,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:25:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-21 11:25:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-21 11:25:32,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:25:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:33,145 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:33,146 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:33,146 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:33,146 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:33,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:25:33,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:33,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:33,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:25:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 11:25:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:33,172 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:33,172 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:33,172 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:33,173 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:33,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:25:33,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:33,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:25:33,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:25:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:33,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:25:33,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:25:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:33,196 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:33,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:33,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:33,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:33,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 11:25:33,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:25:33,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 11:25:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:33,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 11:25:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:25:33,245 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:25:33,245 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:25:33,245 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:25:33,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:25:33,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 11:25:33,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:25:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:25:33,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:25:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:25:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:25:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:25:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:25:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-21 11:25:33,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395668932] [2020-09-21 11:25:33,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:25:33,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 11:25:33,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048309771] [2020-09-21 11:25:33,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:25:33,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:25:33,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:25:33,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:25:33,321 INFO L87 Difference]: Start difference. First operand 2667 states and 2932 transitions. Second operand 5 states. [2020-09-21 11:25:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:25:34,365 INFO L93 Difference]: Finished difference Result 5197 states and 5713 transitions. [2020-09-21 11:25:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:25:34,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-09-21 11:25:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:25:34,381 INFO L225 Difference]: With dead ends: 5197 [2020-09-21 11:25:34,382 INFO L226 Difference]: Without dead ends: 2671 [2020-09-21 11:25:34,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 11:25:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2020-09-21 11:25:34,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2532. [2020-09-21 11:25:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2532 states. [2020-09-21 11:25:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 2754 transitions. [2020-09-21 11:25:34,446 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 2754 transitions. Word has length 204 [2020-09-21 11:25:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:25:34,447 INFO L479 AbstractCegarLoop]: Abstraction has 2532 states and 2754 transitions. [2020-09-21 11:25:34,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:25:34,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 2754 transitions. [2020-09-21 11:25:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-21 11:25:34,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:25:34,455 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:25:34,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:25:34,455 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:25:34,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:25:34,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1986135978, now seen corresponding path program 1 times [2020-09-21 11:25:34,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:25:34,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912899349] [2020-09-21 11:25:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:25:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:25:34,551 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:25:34,552 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:25:34,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:25:34,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:25:34 BoogieIcfgContainer [2020-09-21 11:25:34,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:25:34,607 INFO L168 Benchmark]: Toolchain (without parser) took 31158.09 ms. Allocated memory was 141.0 MB in the beginning and 607.1 MB in the end (delta: 466.1 MB). Free memory was 102.7 MB in the beginning and 367.8 MB in the end (delta: -265.0 MB). Peak memory consumption was 201.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:25:34,608 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:25:34,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.26 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 102.1 MB in the beginning and 172.7 MB in the end (delta: -70.6 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:25:34,610 INFO L168 Benchmark]: Boogie Preprocessor took 124.16 ms. Allocated memory is still 207.1 MB. Free memory was 172.7 MB in the beginning and 167.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:25:34,611 INFO L168 Benchmark]: RCFGBuilder took 1403.56 ms. Allocated memory was 207.1 MB in the beginning and 235.9 MB in the end (delta: 28.8 MB). Free memory was 167.9 MB in the beginning and 175.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:25:34,611 INFO L168 Benchmark]: TraceAbstraction took 28804.82 ms. Allocated memory was 235.9 MB in the beginning and 607.1 MB in the end (delta: 371.2 MB). Free memory was 175.6 MB in the beginning and 367.8 MB in the end (delta: -192.2 MB). Peak memory consumption was 179.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:25:34,615 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.26 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 102.1 MB in the beginning and 172.7 MB in the end (delta: -70.6 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.16 ms. Allocated memory is still 207.1 MB. Free memory was 172.7 MB in the beginning and 167.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1403.56 ms. Allocated memory was 207.1 MB in the beginning and 235.9 MB in the end (delta: 28.8 MB). Free memory was 167.9 MB in the beginning and 175.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28804.82 ms. Allocated memory was 235.9 MB in the beginning and 607.1 MB in the end (delta: 371.2 MB). Free memory was 175.6 MB in the beginning and 367.8 MB in the end (delta: -192.2 MB). Peak memory consumption was 179.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 422]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int a= 1; [L8] int d= 4; [L9] int e= 5; [L10] int f= 6; [L11] int c= 3; [L12] int b= 2; [L15] int u = 21; [L16] int v = 22; [L17] int w = 23; [L18] int x = 24; [L19] int y = 25; [L20] int z = 26; [L22] int a17 = 1; [L23] int a7 = 0; [L24] int a20 = 1; [L25] int a8 = 15; [L26] int a12 = 8; [L27] int a16 = 5; [L28] int a21 = 1; [L580] int output = -1; [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L286] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L292] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L299] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L306] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L312] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L316] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L318] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L324] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L329] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L333] COND TRUE ((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15))) [L334] a17 = 0 [L335] a16 = 4 [L336] return 21; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND TRUE (((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4)) [L269] a20 = 0 [L270] a17 = 1 [L271] a16 = 6 [L272] return 21; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND TRUE (((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6)) [L63] a17 = 0 [L64] return 26; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL, EXPR calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND TRUE (((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8)) [L279] a20 = 1 [L280] a8 = 13 [L281] a16 = 4 [L282] a7 = 0 [L283] a21 = 1 [L284] a17 = 0 [L285] return -1; [L591] RET, EXPR calculate_output(input) [L591] output = calculate_output(input) [L583] COND TRUE 1 [L586] int input; [L587] input = __VERIFIER_nondet_int() [L588] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L591] CALL calculate_output(input) [L31] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L35] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L43] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L49] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L54] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L62] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L65] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L72] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L80] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L84] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L92] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L97] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L102] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L108] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L114] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L119] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L124] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L129] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L136] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L140] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L144] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L148] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L152] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L160] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L165] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L173] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L178] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L186] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L189] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L194] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L197] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L203] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L208] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L214] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L218] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L223] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L231] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L238] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L245] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L250] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L256] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L261] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L265] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L268] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L273] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L278] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L286] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L292] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L299] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L306] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L312] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L316] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L318] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L324] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L329] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L333] COND FALSE !(((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15)))) [L337] COND FALSE !((!(a21==1)&&((a20==1)&&(((a12==8)&&((a8==13)&&((((a16==5)&&!(a17==1))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==2))))&&(a7==1))))) [L345] COND FALSE !(((a7==1)&&((a12==8)&&((((a20==1)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||((a16==4)&&!(a17==1))))&&(input==4)))&&(a8==13))&&!(a21==1))))) [L353] COND FALSE !(((a21==1)&&((((!(a7==1)&&((a8==15)&&(!(a20==1)&&(input==4))))&&(a17==1))&&(a16==5))&&(a12==8)))) [L355] COND FALSE !((((!(a7==1)&&((!(a20==1)&&((a21==1)&&((input==3)&&(a17==1))))&&(a8==15)))&&(a12==8))&&(a16==5))) [L361] COND FALSE !(((((!(a17==1)&&(!(a20==1)&&((a8==15)&&((input==1)&&(a16==5)))))&&(a12==8))&&(a21==1))&&!(a7==1))) [L363] COND FALSE !(((((a21==1)&&((a8==15)&&(((a16==5)&&((a12==8)&&(input==1)))&&(a17==1))))&&!(a7==1))&&!(a20==1))) [L365] COND FALSE !(((!(a21==1)&&((a20==1)&&((((a8==13)&&((a7==1)&&(input==5)))&&(a17==1))&&(a12==8))))&&(a16==5))) [L372] COND FALSE !((((!(a7==1)&&((a21==1)&&((((input==6)&&(a20==1))&&(a8==15))&&!(a17==1))))&&(a12==8))&&(a16==4))) [L377] COND FALSE !(((((a20==1)&&(((!(a21==1)&&((a7==1)&&(input==1)))&&(a8==13))&&(a17==1)))&&(a12==8))&&(a16==5))) [L382] COND FALSE !(((a12==8)&&((input==5)&&((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==15))&&(a16==6))&&(a21==1))||(!(a21==1)&&((a16==4)&&(((a20==1)&&((a7==1)&&(a17==1)))&&(a8==13)))))))) [L391] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L394] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L397] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==4))&&(a21==1))) [L400] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==6))&&(a21==1))) [L403] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L406] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==5))&&(a21==1))) [L409] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1))) [L412] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L415] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==4))&&(a21==1))) [L418] COND FALSE !(((((((!(a17==1)&&(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1))) [L421] COND TRUE ((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==4))&&(a21==1)) [L422] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.6s, OverallIterations: 15, TraceHistogramMax: 5, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 5642 SDslu, 535 SDs, 0 SdLazy, 11229 SolverSat, 1485 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2667occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 1142 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 2230 NumberOfCodeBlocks, 2230 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1948 ConstructedInterpolants, 0 QuantifiedInterpolants, 859756 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 881/906 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...