/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:22:59,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:22:59,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:22:59,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:22:59,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:22:59,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:22:59,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:22:59,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:22:59,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:22:59,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:22:59,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:22:59,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:22:59,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:22:59,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:22:59,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:22:59,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:23:00,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:23:00,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:23:00,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:23:00,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:23:00,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:23:00,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:23:00,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:23:00,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:23:00,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:23:00,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:23:00,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:23:00,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:23:00,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:23:00,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:23:00,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:23:00,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:23:00,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:23:00,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:23:00,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:23:00,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:23:00,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:23:00,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:23:00,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:23:00,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:23:00,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:23:00,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:23:00,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:23:00,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:23:00,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:23:00,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:23:00,077 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:23:00,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:23:00,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:23:00,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:23:00,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:23:00,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:23:00,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:23:00,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:23:00,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:23:00,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:23:00,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:23:00,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:23:00,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:23:00,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:23:00,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:23:00,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:23:00,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:23:00,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:23:00,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:23:00,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:23:00,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:23:00,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:23:00,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:23:00,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:23:00,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:23:00,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:23:00,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:23:00,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:23:00,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:23:00,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:23:00,581 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:23:00,582 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-09-21 11:23:00,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c41bf294/96574ddd15f843eb97662c7a90671e61/FLAG5e536d5f8 [2020-09-21 11:23:01,169 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:23:01,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-09-21 11:23:01,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c41bf294/96574ddd15f843eb97662c7a90671e61/FLAG5e536d5f8 [2020-09-21 11:23:01,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c41bf294/96574ddd15f843eb97662c7a90671e61 [2020-09-21 11:23:01,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:23:01,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:23:01,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:01,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:23:01,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:23:01,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:01,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66948a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01, skipping insertion in model container [2020-09-21 11:23:01,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:01,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:23:01,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:23:01,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:01,881 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:23:01,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:01,921 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:23:01,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01 WrapperNode [2020-09-21 11:23:01,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:01,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:23:01,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:23:01,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:23:02,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:02,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:02,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:02,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:02,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:02,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:02,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (1/1) ... [2020-09-21 11:23:02,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:23:02,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:23:02,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:23:02,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:23:02,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:23:02,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:23:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:23:02,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:23:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:23:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:23:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:23:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:23:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:23:02,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:23:02,371 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:23:02,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:02 BoogieIcfgContainer [2020-09-21 11:23:02,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:23:02,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:23:02,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:23:02,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:23:02,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:23:01" (1/3) ... [2020-09-21 11:23:02,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce97f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:02, skipping insertion in model container [2020-09-21 11:23:02,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:01" (2/3) ... [2020-09-21 11:23:02,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce97f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:02, skipping insertion in model container [2020-09-21 11:23:02,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:02" (3/3) ... [2020-09-21 11:23:02,388 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-09-21 11:23:02,401 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:23:02,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:23:02,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:23:02,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:23:02,475 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:23:02,475 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:23:02,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:23:02,476 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:23:02,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:23:02,476 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:23:02,476 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:23:02,501 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-21 11:23:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 11:23:02,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,511 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-09-21 11:23:02,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936305521] [2020-09-21 11:23:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,666 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,667 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,667 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:23:02,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:23:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:02,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:02,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,736 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,736 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,736 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,736 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:02,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936305521] [2020-09-21 11:23:02,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76364720] [2020-09-21 11:23:02,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,776 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-09-21 11:23:02,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,842 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-09-21 11:23:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-21 11:23:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,859 INFO L225 Difference]: With dead ends: 57 [2020-09-21 11:23:02,860 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 11:23:02,864 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 [2020-09-21 11:23:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 11:23:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-09-21 11:23:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:23:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-09-21 11:23:02,909 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-09-21 11:23:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,910 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-09-21 11:23:02,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-09-21 11:23:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 11:23:02,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:23:02,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,912 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-09-21 11:23:02,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475515960] [2020-09-21 11:23:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,938 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,938 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,939 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:23:02,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:02,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:02,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,977 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,977 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,978 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,978 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:02,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:02,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475515960] [2020-09-21 11:23:02,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595879607] [2020-09-21 11:23:02,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,988 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-09-21 11:23:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,012 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-09-21 11:23:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-21 11:23:03,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,015 INFO L225 Difference]: With dead ends: 67 [2020-09-21 11:23:03,015 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 11:23:03,017 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 [2020-09-21 11:23:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 11:23:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-21 11:23:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 11:23:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-09-21 11:23:03,026 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-09-21 11:23:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,027 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-09-21 11:23:03,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-09-21 11:23:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:23:03,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:23:03,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-09-21 11:23:03,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829812836] [2020-09-21 11:23:03,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,068 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,068 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,069 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,069 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:23:03,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:23:03,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,121 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,121 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,121 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,122 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829812836] [2020-09-21 11:23:03,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796898005] [2020-09-21 11:23:03,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,130 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-09-21 11:23:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,151 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-09-21 11:23:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-21 11:23:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,153 INFO L225 Difference]: With dead ends: 63 [2020-09-21 11:23:03,153 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 11:23:03,154 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 [2020-09-21 11:23:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 11:23:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-09-21 11:23:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 11:23:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-09-21 11:23:03,163 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-09-21 11:23:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,163 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-09-21 11:23:03,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-09-21 11:23:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:23:03,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:23:03,165 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-09-21 11:23:03,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748231900] [2020-09-21 11:23:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,182 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,182 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:23:03,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,210 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,211 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,211 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,211 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748231900] [2020-09-21 11:23:03,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712244141] [2020-09-21 11:23:03,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,218 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-09-21 11:23:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,238 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-09-21 11:23:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-21 11:23:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,243 INFO L225 Difference]: With dead ends: 76 [2020-09-21 11:23:03,244 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 11:23:03,244 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 [2020-09-21 11:23:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 11:23:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-09-21 11:23:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 11:23:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-09-21 11:23:03,255 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-09-21 11:23:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,255 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-09-21 11:23:03,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-09-21 11:23:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:23:03,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:23:03,257 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-09-21 11:23:03,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030036882] [2020-09-21 11:23:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,273 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,274 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:23:03,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:03,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,295 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,296 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,296 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,296 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030036882] [2020-09-21 11:23:03,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943554093] [2020-09-21 11:23:03,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,304 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-09-21 11:23:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,328 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-09-21 11:23:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-21 11:23:03,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,330 INFO L225 Difference]: With dead ends: 124 [2020-09-21 11:23:03,330 INFO L226 Difference]: Without dead ends: 76 [2020-09-21 11:23:03,331 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 [2020-09-21 11:23:03,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-21 11:23:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-09-21 11:23:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-21 11:23:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-09-21 11:23:03,343 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-09-21 11:23:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,344 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-09-21 11:23:03,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-09-21 11:23:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:23:03,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:23:03,346 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-09-21 11:23:03,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383300780] [2020-09-21 11:23:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,362 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,362 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,362 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,363 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:23:03,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:03,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,391 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,391 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383300780] [2020-09-21 11:23:03,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240641256] [2020-09-21 11:23:03,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,399 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-09-21 11:23:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,433 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-09-21 11:23:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-21 11:23:03,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,435 INFO L225 Difference]: With dead ends: 111 [2020-09-21 11:23:03,435 INFO L226 Difference]: Without dead ends: 78 [2020-09-21 11:23:03,436 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 [2020-09-21 11:23:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-21 11:23:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-09-21 11:23:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 11:23:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-09-21 11:23:03,446 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-09-21 11:23:03,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,447 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-09-21 11:23:03,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,447 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-09-21 11:23:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:23:03,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:23:03,449 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,449 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-09-21 11:23:03,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978968270] [2020-09-21 11:23:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:23:03,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:03,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,513 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,513 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,513 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:03,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:23:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978968270] [2020-09-21 11:23:03,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730360109] [2020-09-21 11:23:03,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,525 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-09-21 11:23:03,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,548 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-09-21 11:23:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-21 11:23:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,550 INFO L225 Difference]: With dead ends: 132 [2020-09-21 11:23:03,550 INFO L226 Difference]: Without dead ends: 130 [2020-09-21 11:23:03,551 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 [2020-09-21 11:23:03,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-21 11:23:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-09-21 11:23:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-21 11:23:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-09-21 11:23:03,565 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-09-21 11:23:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,565 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-09-21 11:23:03,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-09-21 11:23:03,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:23:03,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:23:03,567 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-09-21 11:23:03,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469544442] [2020-09-21 11:23:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,579 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,580 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,580 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:23:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,597 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,597 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,597 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,597 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469544442] [2020-09-21 11:23:03,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944621771] [2020-09-21 11:23:03,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,603 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-09-21 11:23:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,624 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-09-21 11:23:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-21 11:23:03,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,626 INFO L225 Difference]: With dead ends: 232 [2020-09-21 11:23:03,626 INFO L226 Difference]: Without dead ends: 138 [2020-09-21 11:23:03,627 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 [2020-09-21 11:23:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-21 11:23:03,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-09-21 11:23:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-21 11:23:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-09-21 11:23:03,643 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-09-21 11:23:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,644 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-09-21 11:23:03,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-09-21 11:23:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:23:03,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:23:03,646 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-09-21 11:23:03,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629918516] [2020-09-21 11:23:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,658 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,658 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,658 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,659 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:23:03,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,675 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,676 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,676 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,676 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629918516] [2020-09-21 11:23:03,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867912797] [2020-09-21 11:23:03,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,682 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-09-21 11:23:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,713 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-09-21 11:23:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-21 11:23:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,715 INFO L225 Difference]: With dead ends: 204 [2020-09-21 11:23:03,715 INFO L226 Difference]: Without dead ends: 142 [2020-09-21 11:23:03,716 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 [2020-09-21 11:23:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-21 11:23:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-09-21 11:23:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-21 11:23:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-09-21 11:23:03,740 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-09-21 11:23:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,741 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-09-21 11:23:03,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,741 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-09-21 11:23:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:23:03,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:23:03,746 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-09-21 11:23:03,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703780966] [2020-09-21 11:23:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,758 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,758 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,758 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:23:03,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,804 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,804 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,805 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,806 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703780966] [2020-09-21 11:23:03,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416129270] [2020-09-21 11:23:03,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,812 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-09-21 11:23:03,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,841 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-09-21 11:23:03,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-21 11:23:03,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,845 INFO L225 Difference]: With dead ends: 236 [2020-09-21 11:23:03,845 INFO L226 Difference]: Without dead ends: 234 [2020-09-21 11:23:03,845 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 [2020-09-21 11:23:03,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-21 11:23:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-09-21 11:23:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-21 11:23:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-09-21 11:23:03,858 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-09-21 11:23:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,858 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-09-21 11:23:03,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-09-21 11:23:03,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:23:03,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:23:03,861 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,861 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-09-21 11:23:03,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979982127] [2020-09-21 11:23:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,875 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,876 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,876 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:23:03,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,894 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,894 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,894 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979982127] [2020-09-21 11:23:03,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053007663] [2020-09-21 11:23:03,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,900 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-09-21 11:23:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,922 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-09-21 11:23:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-21 11:23:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,924 INFO L225 Difference]: With dead ends: 444 [2020-09-21 11:23:03,924 INFO L226 Difference]: Without dead ends: 258 [2020-09-21 11:23:03,926 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 [2020-09-21 11:23:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-21 11:23:03,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-09-21 11:23:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-21 11:23:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-09-21 11:23:03,940 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-09-21 11:23:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,941 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-09-21 11:23:03,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-09-21 11:23:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:23:03,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:23:03,946 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,946 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-09-21 11:23:03,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275937408] [2020-09-21 11:23:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,957 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,957 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,957 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,957 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:23:03,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:03,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,973 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,974 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,974 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,974 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:03,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275937408] [2020-09-21 11:23:03,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318854739] [2020-09-21 11:23:03,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,980 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-09-21 11:23:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:04,000 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-09-21 11:23:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:04,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 11:23:04,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:04,002 INFO L225 Difference]: With dead ends: 384 [2020-09-21 11:23:04,002 INFO L226 Difference]: Without dead ends: 266 [2020-09-21 11:23:04,003 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 [2020-09-21 11:23:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-21 11:23:04,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-09-21 11:23:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-21 11:23:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-09-21 11:23:04,015 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-09-21 11:23:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:04,016 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-09-21 11:23:04,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-09-21 11:23:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:23:04,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:04,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:04,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:23:04,018 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:04,018 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-09-21 11:23:04,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:04,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287547533] [2020-09-21 11:23:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:23:04,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:04,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:04,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,048 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,048 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,048 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:04,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:04,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:04,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:04,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287547533] [2020-09-21 11:23:04,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:04,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:04,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569130031] [2020-09-21 11:23:04,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:04,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:04,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:04,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:04,054 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-09-21 11:23:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:04,075 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-09-21 11:23:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:04,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 11:23:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:04,078 INFO L225 Difference]: With dead ends: 426 [2020-09-21 11:23:04,078 INFO L226 Difference]: Without dead ends: 424 [2020-09-21 11:23:04,079 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 [2020-09-21 11:23:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-09-21 11:23:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-09-21 11:23:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-09-21 11:23:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-09-21 11:23:04,092 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-09-21 11:23:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:04,093 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-09-21 11:23:04,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-09-21 11:23:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:23:04,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:04,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:04,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:23:04,095 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:04,096 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-09-21 11:23:04,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:04,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127057454] [2020-09-21 11:23:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,106 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:23:04,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:23:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,122 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,123 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,123 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:04,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:04,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127057454] [2020-09-21 11:23:04,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:04,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:04,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838399438] [2020-09-21 11:23:04,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:04,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:04,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:04,130 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-09-21 11:23:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:04,157 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-09-21 11:23:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:04,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 11:23:04,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:04,158 INFO L225 Difference]: With dead ends: 856 [2020-09-21 11:23:04,158 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:23:04,160 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 [2020-09-21 11:23:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:23:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:23:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:23:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:23:04,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-21 11:23:04,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:04,162 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:23:04,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:23:04,162 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:23:04,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:23:04,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:23:04,190 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:23:04,191 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:23:04,191 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:23:04,191 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:23:04,191 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:23:04,191 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:23:04,192 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-21 11:23:04,192 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-09-21 11:23:04,192 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-09-21 11:23:04,192 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,192 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-09-21 11:23:04,193 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,193 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,193 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,193 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,193 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,193 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-21 11:23:04,194 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-21 11:23:04,194 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,194 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-09-21 11:23:04,194 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-21 11:23:04,194 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-09-21 11:23:04,194 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-09-21 11:23:04,195 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,195 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-09-21 11:23:04,195 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-09-21 11:23:04,195 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-21 11:23:04,195 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-09-21 11:23:04,196 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-09-21 11:23:04,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:23:04 BoogieIcfgContainer [2020-09-21 11:23:04,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:23:04,213 INFO L168 Benchmark]: Toolchain (without parser) took 2662.43 ms. Allocated memory was 146.8 MB in the beginning and 234.9 MB in the end (delta: 88.1 MB). Free memory was 101.3 MB in the beginning and 100.3 MB in the end (delta: 994.0 kB). Peak memory consumption was 89.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:04,214 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:23:04,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.43 ms. Allocated memory is still 146.8 MB. Free memory was 100.7 MB in the beginning and 90.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:04,216 INFO L168 Benchmark]: Boogie Preprocessor took 124.18 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 90.8 MB in the beginning and 180.9 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:04,216 INFO L168 Benchmark]: RCFGBuilder took 330.09 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 165.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:04,217 INFO L168 Benchmark]: TraceAbstraction took 1831.22 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 165.4 MB in the beginning and 100.3 MB in the end (delta: 65.1 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:04,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.43 ms. Allocated memory is still 146.8 MB. Free memory was 100.7 MB in the beginning and 90.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.18 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 90.8 MB in the beginning and 180.9 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.09 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 165.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1831.22 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 165.4 MB in the beginning and 100.3 MB in the end (delta: 65.1 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 24]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 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=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 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...