/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options 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/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:31,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:31,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:31,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:31,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:31,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:31,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:31,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:31,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:31,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:31,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:31,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:31,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:31,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:31,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:31,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:31,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:31,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:31,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:31,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:31,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:31,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:31,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:31,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:31,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:31,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:31,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:31,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:31,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:31,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:31,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:31,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:31,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:31,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:31,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:31,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:31,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:31,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:31,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:31,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:31,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:31,906 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 [2020-09-24 16:00:31,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:31,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:31,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:31,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:31,936 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:31,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:31,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:31,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:31,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:31,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:31,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:31,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:31,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:31,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:31,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:31,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:31,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:31,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:31,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:31,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:31,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:31,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:31,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:31,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:31,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:31,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:31,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:31,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:31,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:31,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;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; [2020-09-24 16:00:32,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:32,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:32,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:32,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:32,489 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:32,490 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2020-09-24 16:00:32,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed9b78232/e607bde8c6d24debac0020ace2edea25/FLAGa5229cc6a [2020-09-24 16:00:33,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:33,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_7.c [2020-09-24 16:00:33,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed9b78232/e607bde8c6d24debac0020ace2edea25/FLAGa5229cc6a [2020-09-24 16:00:33,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed9b78232/e607bde8c6d24debac0020ace2edea25 [2020-09-24 16:00:33,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:33,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:33,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:33,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:33,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:33,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33, skipping insertion in model container [2020-09-24 16:00:33,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:33,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:33,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:33,789 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:33,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:33,836 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:33,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33 WrapperNode [2020-09-24 16:00:33,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:33,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:33,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:33,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:33,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (1/1) ... [2020-09-24 16:00:33,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:33,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:33,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:33,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:33,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (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 [2020-09-24 16:00:34,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:34,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:34,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:34,419 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:34,419 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:00:34,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:34 BoogieIcfgContainer [2020-09-24 16:00:34,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:34,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:34,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:34,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:34,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:33" (1/3) ... [2020-09-24 16:00:34,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748984bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:34, skipping insertion in model container [2020-09-24 16:00:34,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:33" (2/3) ... [2020-09-24 16:00:34,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748984bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:00:34, skipping insertion in model container [2020-09-24 16:00:34,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:34" (3/3) ... [2020-09-24 16:00:34,437 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-09-24 16:00:34,449 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:34,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:34,483 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:34,516 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:34,516 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:34,516 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:34,516 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:34,516 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:34,517 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:34,517 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:34,517 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-24 16:00:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 16:00:34,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:34,557 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] [2020-09-24 16:00:34,557 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:34,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1826051656, now seen corresponding path program 1 times [2020-09-24 16:00:34,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:34,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126428365] [2020-09-24 16:00:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:34,747 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:34,747 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:34,748 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:34,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:34,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 16:00:34,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:34,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 16:00:34,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 16:00:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:34,872 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:34,873 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:34,877 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:34,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:34,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:34,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:00:34,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:34,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126428365] [2020-09-24 16:00:34,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:34,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:34,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508916405] [2020-09-24 16:00:34,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:34,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:34,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:34,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:34,944 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-09-24 16:00:35,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:35,019 INFO L93 Difference]: Finished difference Result 191 states and 260 transitions. [2020-09-24 16:00:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:35,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-09-24 16:00:35,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:35,042 INFO L225 Difference]: With dead ends: 191 [2020-09-24 16:00:35,043 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 16:00:35,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 16:00:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-09-24 16:00:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 16:00:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2020-09-24 16:00:35,115 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 55 [2020-09-24 16:00:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:35,116 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2020-09-24 16:00:35,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2020-09-24 16:00:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 16:00:35,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:35,119 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] [2020-09-24 16:00:35,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:35,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:35,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:35,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1965492109, now seen corresponding path program 1 times [2020-09-24 16:00:35,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:35,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116062664] [2020-09-24 16:00:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,157 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,157 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,158 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 16:00:35,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:35,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 16:00:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:35,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,215 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,216 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:35,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116062664] [2020-09-24 16:00:35,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:35,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:35,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330622933] [2020-09-24 16:00:35,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:35,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:35,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:35,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,231 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand 3 states. [2020-09-24 16:00:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:35,256 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2020-09-24 16:00:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:35,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-09-24 16:00:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:35,259 INFO L225 Difference]: With dead ends: 154 [2020-09-24 16:00:35,259 INFO L226 Difference]: Without dead ends: 152 [2020-09-24 16:00:35,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-24 16:00:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 126. [2020-09-24 16:00:35,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 16:00:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2020-09-24 16:00:35,284 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 56 [2020-09-24 16:00:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:35,284 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2020-09-24 16:00:35,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2020-09-24 16:00:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 16:00:35,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:35,293 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] [2020-09-24 16:00:35,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:35,293 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:35,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:35,294 INFO L82 PathProgramCache]: Analyzing trace with hash 773271458, now seen corresponding path program 1 times [2020-09-24 16:00:35,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:35,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590858051] [2020-09-24 16:00:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,321 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,322 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 16:00:35,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:00:35,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 16:00:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,361 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,361 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,361 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:35,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:35,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:35,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590858051] [2020-09-24 16:00:35,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:35,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:35,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548196025] [2020-09-24 16:00:35,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:35,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:35,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:35,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,376 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand 3 states. [2020-09-24 16:00:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:35,404 INFO L93 Difference]: Finished difference Result 306 states and 415 transitions. [2020-09-24 16:00:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:35,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-09-24 16:00:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:35,408 INFO L225 Difference]: With dead ends: 306 [2020-09-24 16:00:35,408 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 16:00:35,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 16:00:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-09-24 16:00:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-24 16:00:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 280 transitions. [2020-09-24 16:00:35,428 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 280 transitions. Word has length 56 [2020-09-24 16:00:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:35,428 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 280 transitions. [2020-09-24 16:00:35,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 280 transitions. [2020-09-24 16:00:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 16:00:35,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:35,431 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] [2020-09-24 16:00:35,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:35,431 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:35,432 INFO L82 PathProgramCache]: Analyzing trace with hash -610540190, now seen corresponding path program 1 times [2020-09-24 16:00:35,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:35,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662393693] [2020-09-24 16:00:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 16:00:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:00:35,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 16:00:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:35,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,504 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,504 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,504 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:35,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:35,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:35,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662393693] [2020-09-24 16:00:35,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:35,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:35,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567552473] [2020-09-24 16:00:35,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:35,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:35,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:35,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,531 INFO L87 Difference]: Start difference. First operand 211 states and 280 transitions. Second operand 3 states. [2020-09-24 16:00:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:35,570 INFO L93 Difference]: Finished difference Result 259 states and 346 transitions. [2020-09-24 16:00:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:35,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-09-24 16:00:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:35,575 INFO L225 Difference]: With dead ends: 259 [2020-09-24 16:00:35,575 INFO L226 Difference]: Without dead ends: 257 [2020-09-24 16:00:35,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-24 16:00:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2020-09-24 16:00:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-24 16:00:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 278 transitions. [2020-09-24 16:00:35,593 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 278 transitions. Word has length 57 [2020-09-24 16:00:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:35,593 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 278 transitions. [2020-09-24 16:00:35,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 278 transitions. [2020-09-24 16:00:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 16:00:35,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:35,595 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] [2020-09-24 16:00:35,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:35,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:35,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1798143236, now seen corresponding path program 1 times [2020-09-24 16:00:35,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:35,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951288783] [2020-09-24 16:00:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,616 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,616 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 16:00:35,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:35,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 16:00:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,661 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,662 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,662 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,662 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:35,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:35,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:35,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:35,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:35,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:35,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951288783] [2020-09-24 16:00:35,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:35,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:35,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837757964] [2020-09-24 16:00:35,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:35,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:35,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:35,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,675 INFO L87 Difference]: Start difference. First operand 211 states and 278 transitions. Second operand 3 states. [2020-09-24 16:00:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:35,702 INFO L93 Difference]: Finished difference Result 555 states and 752 transitions. [2020-09-24 16:00:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:35,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-09-24 16:00:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:35,706 INFO L225 Difference]: With dead ends: 555 [2020-09-24 16:00:35,706 INFO L226 Difference]: Without dead ends: 377 [2020-09-24 16:00:35,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-24 16:00:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2020-09-24 16:00:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-09-24 16:00:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 498 transitions. [2020-09-24 16:00:35,740 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 498 transitions. Word has length 57 [2020-09-24 16:00:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:35,741 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 498 transitions. [2020-09-24 16:00:35,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:35,741 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 498 transitions. [2020-09-24 16:00:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 16:00:35,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:35,748 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] [2020-09-24 16:00:35,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:35,748 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1136837537, now seen corresponding path program 1 times [2020-09-24 16:00:35,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:35,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480138310] [2020-09-24 16:00:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,790 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,791 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 16:00:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:00:35,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 16:00:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:35,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,853 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,853 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,853 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,854 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:35,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 16:00:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:35,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480138310] [2020-09-24 16:00:35,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:35,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:35,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844440365] [2020-09-24 16:00:35,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:35,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:35,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:35,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,872 INFO L87 Difference]: Start difference. First operand 375 states and 498 transitions. Second operand 3 states. [2020-09-24 16:00:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:35,897 INFO L93 Difference]: Finished difference Result 459 states and 612 transitions. [2020-09-24 16:00:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:35,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-09-24 16:00:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:35,901 INFO L225 Difference]: With dead ends: 459 [2020-09-24 16:00:35,901 INFO L226 Difference]: Without dead ends: 457 [2020-09-24 16:00:35,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-09-24 16:00:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 375. [2020-09-24 16:00:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-09-24 16:00:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 494 transitions. [2020-09-24 16:00:35,916 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 494 transitions. Word has length 58 [2020-09-24 16:00:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:35,917 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 494 transitions. [2020-09-24 16:00:35,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:35,917 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 494 transitions. [2020-09-24 16:00:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 16:00:35,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:35,919 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] [2020-09-24 16:00:35,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:00:35,920 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:35,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:35,920 INFO L82 PathProgramCache]: Analyzing trace with hash 92380246, now seen corresponding path program 1 times [2020-09-24 16:00:35,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:35,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166266096] [2020-09-24 16:00:35,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,936 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,936 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 16:00:35,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:35,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 16:00:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:35,966 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:35,967 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:35,967 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:35,967 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:35,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:35,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:35,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:35,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:35,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166266096] [2020-09-24 16:00:35,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:35,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:35,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226325591] [2020-09-24 16:00:35,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:35,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:35,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:35,975 INFO L87 Difference]: Start difference. First operand 375 states and 494 transitions. Second operand 3 states. [2020-09-24 16:00:36,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,001 INFO L93 Difference]: Finished difference Result 1035 states and 1384 transitions. [2020-09-24 16:00:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-09-24 16:00:36,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,006 INFO L225 Difference]: With dead ends: 1035 [2020-09-24 16:00:36,006 INFO L226 Difference]: Without dead ends: 693 [2020-09-24 16:00:36,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-09-24 16:00:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2020-09-24 16:00:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-09-24 16:00:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 906 transitions. [2020-09-24 16:00:36,031 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 906 transitions. Word has length 58 [2020-09-24 16:00:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,031 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 906 transitions. [2020-09-24 16:00:36,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 906 transitions. [2020-09-24 16:00:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 16:00:36,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,033 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] [2020-09-24 16:00:36,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:00:36,034 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,034 INFO L82 PathProgramCache]: Analyzing trace with hash -529027402, now seen corresponding path program 1 times [2020-09-24 16:00:36,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015882081] [2020-09-24 16:00:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,048 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,049 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,049 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,049 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 16:00:36,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:36,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 16:00:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:36,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:36,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015882081] [2020-09-24 16:00:36,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:36,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:36,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518217249] [2020-09-24 16:00:36,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:36,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:36,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,084 INFO L87 Difference]: Start difference. First operand 691 states and 906 transitions. Second operand 3 states. [2020-09-24 16:00:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,106 INFO L93 Difference]: Finished difference Result 839 states and 1100 transitions. [2020-09-24 16:00:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-09-24 16:00:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,111 INFO L225 Difference]: With dead ends: 839 [2020-09-24 16:00:36,112 INFO L226 Difference]: Without dead ends: 837 [2020-09-24 16:00:36,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-24 16:00:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 691. [2020-09-24 16:00:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-09-24 16:00:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 898 transitions. [2020-09-24 16:00:36,133 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 898 transitions. Word has length 59 [2020-09-24 16:00:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,134 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 898 transitions. [2020-09-24 16:00:36,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 898 transitions. [2020-09-24 16:00:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 16:00:36,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,135 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] [2020-09-24 16:00:36,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:00:36,136 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1430933584, now seen corresponding path program 1 times [2020-09-24 16:00:36,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442171867] [2020-09-24 16:00:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,149 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,150 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,150 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 16:00:36,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:36,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 16:00:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,175 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,175 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,175 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,175 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:36,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:36,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442171867] [2020-09-24 16:00:36,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:36,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:36,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041687109] [2020-09-24 16:00:36,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:36,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,185 INFO L87 Difference]: Start difference. First operand 691 states and 898 transitions. Second operand 3 states. [2020-09-24 16:00:36,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,223 INFO L93 Difference]: Finished difference Result 1959 states and 2564 transitions. [2020-09-24 16:00:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-09-24 16:00:36,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,231 INFO L225 Difference]: With dead ends: 1959 [2020-09-24 16:00:36,231 INFO L226 Difference]: Without dead ends: 1301 [2020-09-24 16:00:36,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2020-09-24 16:00:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1299. [2020-09-24 16:00:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-09-24 16:00:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1666 transitions. [2020-09-24 16:00:36,272 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1666 transitions. Word has length 59 [2020-09-24 16:00:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,273 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1666 transitions. [2020-09-24 16:00:36,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1666 transitions. [2020-09-24 16:00:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 16:00:36,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,275 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] [2020-09-24 16:00:36,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:00:36,276 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash -631232587, now seen corresponding path program 1 times [2020-09-24 16:00:36,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370819557] [2020-09-24 16:00:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,289 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,290 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,290 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,290 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:00:36,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:00:36,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 16:00:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:36,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,330 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,330 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,331 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,331 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:36,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:36,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370819557] [2020-09-24 16:00:36,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:36,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:36,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646856804] [2020-09-24 16:00:36,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:36,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:36,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,338 INFO L87 Difference]: Start difference. First operand 1299 states and 1666 transitions. Second operand 3 states. [2020-09-24 16:00:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,370 INFO L93 Difference]: Finished difference Result 1559 states and 1988 transitions. [2020-09-24 16:00:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-09-24 16:00:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,378 INFO L225 Difference]: With dead ends: 1559 [2020-09-24 16:00:36,378 INFO L226 Difference]: Without dead ends: 1557 [2020-09-24 16:00:36,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2020-09-24 16:00:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1299. [2020-09-24 16:00:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-09-24 16:00:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1650 transitions. [2020-09-24 16:00:36,415 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1650 transitions. Word has length 60 [2020-09-24 16:00:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,415 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1650 transitions. [2020-09-24 16:00:36,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1650 transitions. [2020-09-24 16:00:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 16:00:36,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,417 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] [2020-09-24 16:00:36,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:00:36,417 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1409021686, now seen corresponding path program 1 times [2020-09-24 16:00:36,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608519008] [2020-09-24 16:00:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,430 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:00:36,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 16:00:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,449 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,449 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,449 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:36,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608519008] [2020-09-24 16:00:36,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:36,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:36,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769378995] [2020-09-24 16:00:36,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:36,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:36,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,456 INFO L87 Difference]: Start difference. First operand 1299 states and 1650 transitions. Second operand 3 states. [2020-09-24 16:00:36,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,495 INFO L93 Difference]: Finished difference Result 3735 states and 4756 transitions. [2020-09-24 16:00:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-09-24 16:00:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,506 INFO L225 Difference]: With dead ends: 3735 [2020-09-24 16:00:36,506 INFO L226 Difference]: Without dead ends: 2469 [2020-09-24 16:00:36,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-09-24 16:00:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2020-09-24 16:00:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-24 16:00:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3074 transitions. [2020-09-24 16:00:36,566 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3074 transitions. Word has length 60 [2020-09-24 16:00:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,567 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 3074 transitions. [2020-09-24 16:00:36,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3074 transitions. [2020-09-24 16:00:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 16:00:36,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,569 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] [2020-09-24 16:00:36,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 16:00:36,570 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,570 INFO L82 PathProgramCache]: Analyzing trace with hash -729752476, now seen corresponding path program 1 times [2020-09-24 16:00:36,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109387365] [2020-09-24 16:00:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,581 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,581 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,582 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,582 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 16:00:36,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 16:00:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:00:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,602 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,602 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,602 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,602 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:36,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:36,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109387365] [2020-09-24 16:00:36,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:36,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:36,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961187988] [2020-09-24 16:00:36,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:36,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:36,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,609 INFO L87 Difference]: Start difference. First operand 2467 states and 3074 transitions. Second operand 3 states. [2020-09-24 16:00:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,675 INFO L93 Difference]: Finished difference Result 7143 states and 8900 transitions. [2020-09-24 16:00:36,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-09-24 16:00:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,691 INFO L225 Difference]: With dead ends: 7143 [2020-09-24 16:00:36,691 INFO L226 Difference]: Without dead ends: 3637 [2020-09-24 16:00:36,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2020-09-24 16:00:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3635. [2020-09-24 16:00:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3635 states. [2020-09-24 16:00:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4370 transitions. [2020-09-24 16:00:36,796 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4370 transitions. Word has length 61 [2020-09-24 16:00:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,796 INFO L479 AbstractCegarLoop]: Abstraction has 3635 states and 4370 transitions. [2020-09-24 16:00:36,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4370 transitions. [2020-09-24 16:00:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 16:00:36,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,799 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] [2020-09-24 16:00:36,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 16:00:36,800 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash 495374346, now seen corresponding path program 1 times [2020-09-24 16:00:36,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357419503] [2020-09-24 16:00:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,811 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,811 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,811 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 16:00:36,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 16:00:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,833 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,833 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,834 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:36,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:00:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:36,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357419503] [2020-09-24 16:00:36,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:36,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:36,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214172417] [2020-09-24 16:00:36,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:36,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:36,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,845 INFO L87 Difference]: Start difference. First operand 3635 states and 4370 transitions. Second operand 3 states. [2020-09-24 16:00:36,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:36,917 INFO L93 Difference]: Finished difference Result 4087 states and 4852 transitions. [2020-09-24 16:00:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:36,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-09-24 16:00:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:36,930 INFO L225 Difference]: With dead ends: 4087 [2020-09-24 16:00:36,931 INFO L226 Difference]: Without dead ends: 2917 [2020-09-24 16:00:36,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-09-24 16:00:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2467. [2020-09-24 16:00:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-09-24 16:00:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 2914 transitions. [2020-09-24 16:00:36,994 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 2914 transitions. Word has length 61 [2020-09-24 16:00:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:36,995 INFO L479 AbstractCegarLoop]: Abstraction has 2467 states and 2914 transitions. [2020-09-24 16:00:36,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:36,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 2914 transitions. [2020-09-24 16:00:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 16:00:36,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:36,997 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] [2020-09-24 16:00:36,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 16:00:36,998 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:36,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:36,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1060451273, now seen corresponding path program 1 times [2020-09-24 16:00:36,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:36,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061611941] [2020-09-24 16:00:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:37,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:37,009 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:37,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:37,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:37,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 16:00:37,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:37,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:37,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:37,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:37,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-24 16:00:37,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:00:37,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:37,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:37,032 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:37,032 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:37,032 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:37,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:00:37,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:37,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:37,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061611941] [2020-09-24 16:00:37,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:37,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:37,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672907297] [2020-09-24 16:00:37,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:37,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:37,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:37,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:37,040 INFO L87 Difference]: Start difference. First operand 2467 states and 2914 transitions. Second operand 3 states. [2020-09-24 16:00:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:37,069 INFO L93 Difference]: Finished difference Result 2467 states and 2914 transitions. [2020-09-24 16:00:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:37,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-09-24 16:00:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:37,070 INFO L225 Difference]: With dead ends: 2467 [2020-09-24 16:00:37,070 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:00:37,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:00:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:00:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:00:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:00:37,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-09-24 16:00:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:37,076 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:00:37,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:00:37,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:00:37,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 16:00:37,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:00:37,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:00:37,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:00:37,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:00:37,107 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:00:37,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:00:37,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:00:37,108 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-24 16:00:37,108 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-24 16:00:37,108 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2020-09-24 16:00:37,108 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 16:00:37,108 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 16:00:37,108 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-09-24 16:00:37,108 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 16:00:37,109 INFO L268 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,109 INFO L271 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2020-09-24 16:00:37,109 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 16:00:37,109 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 16:00:37,109 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 16:00:37,109 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 16:00:37,109 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-24 16:00:37,110 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 16:00:37,110 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-24 16:00:37,110 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-24 16:00:37,110 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 16:00:37,110 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 16:00:37,110 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 16:00:37,110 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-24 16:00:37,111 INFO L264 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2020-09-24 16:00:37,111 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 16:00:37,111 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2020-09-24 16:00:37,111 INFO L268 CegarLoopResult]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,111 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2020-09-24 16:00:37,111 INFO L268 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,112 INFO L268 CegarLoopResult]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,112 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2020-09-24 16:00:37,112 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-24 16:00:37,112 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 16:00:37,112 INFO L268 CegarLoopResult]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,112 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-09-24 16:00:37,112 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 16:00:37,113 INFO L268 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-09-24 16:00:37,113 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 16:00:37,113 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 16:00:37,113 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 16:00:37,113 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-09-24 16:00:37,113 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-24 16:00:37,113 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 16:00:37,114 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 16:00:37,114 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 16:00:37,114 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-24 16:00:37,114 INFO L268 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,114 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 16:00:37,114 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 16:00:37,114 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 16:00:37,115 INFO L268 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,115 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 16:00:37,115 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-24 16:00:37,115 INFO L268 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-09-24 16:00:37,115 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 16:00:37,115 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 16:00:37,115 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 16:00:37,115 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-09-24 16:00:37,116 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:00:37,116 INFO L268 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-09-24 16:00:37,116 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 16:00:37,116 INFO L268 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,116 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 16:00:37,116 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-24 16:00:37,116 INFO L268 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-09-24 16:00:37,117 INFO L268 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,117 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 16:00:37,117 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 16:00:37,117 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 16:00:37,117 INFO L268 CegarLoopResult]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,117 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-24 16:00:37,117 INFO L268 CegarLoopResult]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,118 INFO L271 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2020-09-24 16:00:37,118 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-09-24 16:00:37,118 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:00:37,118 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 16:00:37,118 INFO L268 CegarLoopResult]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,118 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 16:00:37,118 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-09-24 16:00:37,119 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 16:00:37,119 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 16:00:37,119 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-24 16:00:37,119 INFO L268 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2020-09-24 16:00:37,119 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 16:00:37,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:37 BoogieIcfgContainer [2020-09-24 16:00:37,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:37,139 INFO L168 Benchmark]: Toolchain (without parser) took 3700.63 ms. Allocated memory was 136.3 MB in the beginning and 255.9 MB in the end (delta: 119.5 MB). Free memory was 99.5 MB in the beginning and 160.5 MB in the end (delta: -61.1 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,139 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.30 ms. Allocated memory is still 136.3 MB. Free memory was 98.8 MB in the beginning and 88.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,141 INFO L168 Benchmark]: Boogie Preprocessor took 131.53 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 88.6 MB in the beginning and 176.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,142 INFO L168 Benchmark]: RCFGBuilder took 456.54 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 155.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,143 INFO L168 Benchmark]: TraceAbstraction took 2707.03 ms. Allocated memory was 198.7 MB in the beginning and 255.9 MB in the end (delta: 57.1 MB). Free memory was 155.7 MB in the beginning and 160.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:37,146 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 395.30 ms. Allocated memory is still 136.3 MB. Free memory was 98.8 MB in the beginning and 88.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.53 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 88.6 MB in the beginning and 176.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.54 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 155.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2707.03 ms. Allocated memory was 198.7 MB in the beginning and 255.9 MB in the end (delta: 57.1 MB). Free memory was 155.7 MB in the beginning and 160.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1813 SDtfs, 648 SDslu, 1281 SDs, 0 SdLazy, 69 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3635occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 1022 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 137 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 805 ConstructedInterpolants, 0 QuantifiedInterpolants, 58429 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...