/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_11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:22:58,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:22:58,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:22:58,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:22:58,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:22:58,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:22:58,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:22:58,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:22:58,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:22:58,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:22:58,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:22:58,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:22:58,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:22:58,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:22:58,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:22:58,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:22:58,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:22:58,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:22:58,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:22:58,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:22:58,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:22:58,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:22:58,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:22:58,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:22:58,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:22:58,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:22:58,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:22:58,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:22:58,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:22:58,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:22:58,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:22:58,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:22:58,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:22:58,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:22:58,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:22:58,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:22:58,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:22:58,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:22:58,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:22:58,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:22:58,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:22:58,197 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 11:22:58,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:22:58,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:22:58,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:22:58,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:22:58,232 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:22:58,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:22:58,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:22:58,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:22:58,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:22:58,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:22:58,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:22:58,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:22:58,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:22:58,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:22:58,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:22:58,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:22:58,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:22:58,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:22:58,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:22:58,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:22:58,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:22:58,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:22:58,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:22:58,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:22:58,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:22:58,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:22:58,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:22:58,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:22:58,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:22:58,237 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 11:22:58,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:22:58,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:22:58,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:22:58,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:22:58,741 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:22:58,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2020-09-21 11:22:58,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b89a4eac/e02b75e549f44e6597a1ca8b9efbb60c/FLAG631a50a24 [2020-09-21 11:22:59,372 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:22:59,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_11.c [2020-09-21 11:22:59,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b89a4eac/e02b75e549f44e6597a1ca8b9efbb60c/FLAG631a50a24 [2020-09-21 11:22:59,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b89a4eac/e02b75e549f44e6597a1ca8b9efbb60c [2020-09-21 11:22:59,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:22:59,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:22:59,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:22:59,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:22:59,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:22:59,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:22:59" (1/1) ... [2020-09-21 11:22:59,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:59, skipping insertion in model container [2020-09-21 11:22:59,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:22:59" (1/1) ... [2020-09-21 11:22:59,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:22:59,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:23:00,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:00,068 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:23:00,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:00,144 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:23:00,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00 WrapperNode [2020-09-21 11:23:00,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:00,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:23:00,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:23:00,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:23:00,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (1/1) ... [2020-09-21 11:23:00,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (1/1) ... [2020-09-21 11:23:00,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (1/1) ... [2020-09-21 11:23:00,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (1/1) ... [2020-09-21 11:23:00,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (1/1) ... [2020-09-21 11:23:00,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (1/1) ... [2020-09-21 11:23:00,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (1/1) ... [2020-09-21 11:23:00,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:23:00,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:23:00,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:23:00,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:23:00,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (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 11:23:00,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:23:00,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:23:00,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:23:00,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:23:00,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:23:00,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:23:00,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:23:00,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:23:00,718 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:23:00,719 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:23:00,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:00 BoogieIcfgContainer [2020-09-21 11:23:00,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:23:00,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:23:00,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:23:00,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:23:00,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:22:59" (1/3) ... [2020-09-21 11:23:00,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33878719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:00, skipping insertion in model container [2020-09-21 11:23:00,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:00" (2/3) ... [2020-09-21 11:23:00,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33878719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:00, skipping insertion in model container [2020-09-21 11:23:00,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:00" (3/3) ... [2020-09-21 11:23:00,734 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-09-21 11:23:00,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:23:00,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:23:00,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:23:00,813 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:23:00,813 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:23:00,813 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:23:00,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:23:00,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:23:00,814 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:23:00,814 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:23:00,814 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:23:00,838 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-21 11:23:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:23:00,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:00,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,855 INFO L82 PathProgramCache]: Analyzing trace with hash -316470182, now seen corresponding path program 1 times [2020-09-21 11:23:00,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109331426] [2020-09-21 11:23:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,045 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,045 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,045 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,046 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:23:01,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 11:23:01,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:01,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,147 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,148 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:01,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:01,160 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 11:23:01,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109331426] [2020-09-21 11:23:01,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135720179] [2020-09-21 11:23:01,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,198 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2020-09-21 11:23:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,260 INFO L93 Difference]: Finished difference Result 93 states and 162 transitions. [2020-09-21 11:23:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:23:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,277 INFO L225 Difference]: With dead ends: 93 [2020-09-21 11:23:01,278 INFO L226 Difference]: Without dead ends: 78 [2020-09-21 11:23:01,282 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 11:23:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-21 11:23:01,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2020-09-21 11:23:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 11:23:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-21 11:23:01,336 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 21 [2020-09-21 11:23:01,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,336 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-21 11:23:01,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-21 11:23:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:23:01,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:01,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:23:01,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1327587432, now seen corresponding path program 1 times [2020-09-21 11:23:01,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56774186] [2020-09-21 11:23:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,374 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,374 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,375 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:23:01,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:01,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:01,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,433 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,434 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,434 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,434 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:01,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:01,452 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 11:23:01,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56774186] [2020-09-21 11:23:01,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867779540] [2020-09-21 11:23:01,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,458 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 3 states. [2020-09-21 11:23:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,515 INFO L93 Difference]: Finished difference Result 127 states and 232 transitions. [2020-09-21 11:23:01,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:23:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,517 INFO L225 Difference]: With dead ends: 127 [2020-09-21 11:23:01,518 INFO L226 Difference]: Without dead ends: 78 [2020-09-21 11:23:01,519 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 11:23:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-21 11:23:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-09-21 11:23:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 11:23:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 137 transitions. [2020-09-21 11:23:01,531 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 137 transitions. Word has length 21 [2020-09-21 11:23:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,531 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 137 transitions. [2020-09-21 11:23:01,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 137 transitions. [2020-09-21 11:23:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:23:01,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:01,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:23:01,533 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1220427994, now seen corresponding path program 1 times [2020-09-21 11:23:01,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550148034] [2020-09-21 11:23:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,563 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,564 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,564 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:23:01,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:01,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:01,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:01,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,605 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,605 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,606 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,606 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,611 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 11:23:01,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550148034] [2020-09-21 11:23:01,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720582073] [2020-09-21 11:23:01,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,614 INFO L87 Difference]: Start difference. First operand 76 states and 137 transitions. Second operand 3 states. [2020-09-21 11:23:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,638 INFO L93 Difference]: Finished difference Result 117 states and 207 transitions. [2020-09-21 11:23:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 11:23:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,640 INFO L225 Difference]: With dead ends: 117 [2020-09-21 11:23:01,641 INFO L226 Difference]: Without dead ends: 81 [2020-09-21 11:23:01,642 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 11:23:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-21 11:23:01,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-09-21 11:23:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-21 11:23:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 139 transitions. [2020-09-21 11:23:01,653 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 139 transitions. Word has length 22 [2020-09-21 11:23:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,653 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 139 transitions. [2020-09-21 11:23:01,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 139 transitions. [2020-09-21 11:23:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:23:01,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:01,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:23:01,656 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1794675624, now seen corresponding path program 1 times [2020-09-21 11:23:01,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466989491] [2020-09-21 11:23:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,705 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,706 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,706 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:23:01,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:23:01,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:23:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,774 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,774 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,774 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:23:01,784 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 11:23:01,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466989491] [2020-09-21 11:23:01,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855821992] [2020-09-21 11:23:01,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,790 INFO L87 Difference]: Start difference. First operand 79 states and 139 transitions. Second operand 3 states. [2020-09-21 11:23:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,840 INFO L93 Difference]: Finished difference Result 148 states and 264 transitions. [2020-09-21 11:23:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 11:23:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,843 INFO L225 Difference]: With dead ends: 148 [2020-09-21 11:23:01,843 INFO L226 Difference]: Without dead ends: 146 [2020-09-21 11:23:01,846 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 11:23:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-21 11:23:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2020-09-21 11:23:01,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-21 11:23:01,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 184 transitions. [2020-09-21 11:23:01,865 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 184 transitions. Word has length 22 [2020-09-21 11:23:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,866 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 184 transitions. [2020-09-21 11:23:01,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 184 transitions. [2020-09-21 11:23:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:23:01,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:01,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:23:01,869 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,869 INFO L82 PathProgramCache]: Analyzing trace with hash 783558374, now seen corresponding path program 1 times [2020-09-21 11:23:01,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941788702] [2020-09-21 11:23:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,892 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,893 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,893 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,893 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:23:01,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:01,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,942 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,942 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,943 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,943 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,947 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 11:23:01,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941788702] [2020-09-21 11:23:01,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832079616] [2020-09-21 11:23:01,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,950 INFO L87 Difference]: Start difference. First operand 104 states and 184 transitions. Second operand 3 states. [2020-09-21 11:23:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,970 INFO L93 Difference]: Finished difference Result 244 states and 438 transitions. [2020-09-21 11:23:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 11:23:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,973 INFO L225 Difference]: With dead ends: 244 [2020-09-21 11:23:01,973 INFO L226 Difference]: Without dead ends: 148 [2020-09-21 11:23:01,974 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 11:23:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-21 11:23:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-09-21 11:23:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-21 11:23:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 258 transitions. [2020-09-21 11:23:01,987 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 258 transitions. Word has length 22 [2020-09-21 11:23:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,987 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 258 transitions. [2020-09-21 11:23:01,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 258 transitions. [2020-09-21 11:23:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:23:01,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:01,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:23:01,990 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,990 INFO L82 PathProgramCache]: Analyzing trace with hash -199417107, now seen corresponding path program 1 times [2020-09-21 11:23:01,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173666409] [2020-09-21 11:23:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,019 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,019 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,020 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:23:02,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,059 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,060 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,062 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:02,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,073 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 11:23:02,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173666409] [2020-09-21 11:23:02,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733183439] [2020-09-21 11:23:02,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,075 INFO L87 Difference]: Start difference. First operand 146 states and 258 transitions. Second operand 3 states. [2020-09-21 11:23:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,105 INFO L93 Difference]: Finished difference Result 219 states and 385 transitions. [2020-09-21 11:23:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 11:23:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,108 INFO L225 Difference]: With dead ends: 219 [2020-09-21 11:23:02,108 INFO L226 Difference]: Without dead ends: 150 [2020-09-21 11:23:02,109 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 11:23:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-21 11:23:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-09-21 11:23:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-21 11:23:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 258 transitions. [2020-09-21 11:23:02,119 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 258 transitions. Word has length 23 [2020-09-21 11:23:02,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,120 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 258 transitions. [2020-09-21 11:23:02,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,120 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 258 transitions. [2020-09-21 11:23:02,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:23:02,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:23:02,122 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1479280785, now seen corresponding path program 1 times [2020-09-21 11:23:02,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047734692] [2020-09-21 11:23:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,140 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,140 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,140 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,140 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:23:02,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:02,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,167 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,167 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,172 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 11:23:02,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047734692] [2020-09-21 11:23:02,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054834889] [2020-09-21 11:23:02,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,174 INFO L87 Difference]: Start difference. First operand 148 states and 258 transitions. Second operand 3 states. [2020-09-21 11:23:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,193 INFO L93 Difference]: Finished difference Result 276 states and 488 transitions. [2020-09-21 11:23:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 11:23:02,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,195 INFO L225 Difference]: With dead ends: 276 [2020-09-21 11:23:02,195 INFO L226 Difference]: Without dead ends: 274 [2020-09-21 11:23:02,196 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 11:23:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-21 11:23:02,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 200. [2020-09-21 11:23:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-21 11:23:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 346 transitions. [2020-09-21 11:23:02,215 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 346 transitions. Word has length 23 [2020-09-21 11:23:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,215 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 346 transitions. [2020-09-21 11:23:02,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 346 transitions. [2020-09-21 11:23:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:23:02,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:23:02,218 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1804569261, now seen corresponding path program 1 times [2020-09-21 11:23:02,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102821083] [2020-09-21 11:23:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,242 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,242 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,242 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,243 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:23:02,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:02,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,267 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,268 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,271 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 11:23:02,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102821083] [2020-09-21 11:23:02,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301690730] [2020-09-21 11:23:02,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,274 INFO L87 Difference]: Start difference. First operand 200 states and 346 transitions. Second operand 3 states. [2020-09-21 11:23:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,295 INFO L93 Difference]: Finished difference Result 472 states and 824 transitions. [2020-09-21 11:23:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 11:23:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,297 INFO L225 Difference]: With dead ends: 472 [2020-09-21 11:23:02,297 INFO L226 Difference]: Without dead ends: 282 [2020-09-21 11:23:02,299 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 11:23:02,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-21 11:23:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2020-09-21 11:23:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-21 11:23:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 482 transitions. [2020-09-21 11:23:02,310 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 482 transitions. Word has length 23 [2020-09-21 11:23:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,310 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 482 transitions. [2020-09-21 11:23:02,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,311 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 482 transitions. [2020-09-21 11:23:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:23:02,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:23:02,313 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1387149659, now seen corresponding path program 1 times [2020-09-21 11:23:02,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124171957] [2020-09-21 11:23:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,327 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,328 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,328 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:23:02,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:02,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:02,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,348 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,349 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,349 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,349 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,355 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 11:23:02,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124171957] [2020-09-21 11:23:02,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084994329] [2020-09-21 11:23:02,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,357 INFO L87 Difference]: Start difference. First operand 280 states and 482 transitions. Second operand 3 states. [2020-09-21 11:23:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,389 INFO L93 Difference]: Finished difference Result 420 states and 720 transitions. [2020-09-21 11:23:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 11:23:02,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,392 INFO L225 Difference]: With dead ends: 420 [2020-09-21 11:23:02,392 INFO L226 Difference]: Without dead ends: 286 [2020-09-21 11:23:02,393 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 11:23:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-21 11:23:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-09-21 11:23:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-21 11:23:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 482 transitions. [2020-09-21 11:23:02,407 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 482 transitions. Word has length 24 [2020-09-21 11:23:02,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,409 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 482 transitions. [2020-09-21 11:23:02,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 482 transitions. [2020-09-21 11:23:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:23:02,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:23:02,413 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,414 INFO L82 PathProgramCache]: Analyzing trace with hash 107285981, now seen corresponding path program 1 times [2020-09-21 11:23:02,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268708355] [2020-09-21 11:23:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,444 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,444 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,445 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,445 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:23:02,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:02,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,471 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,471 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,471 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,481 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 11:23:02,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268708355] [2020-09-21 11:23:02,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122201842] [2020-09-21 11:23:02,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,485 INFO L87 Difference]: Start difference. First operand 284 states and 482 transitions. Second operand 3 states. [2020-09-21 11:23:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,519 INFO L93 Difference]: Finished difference Result 524 states and 904 transitions. [2020-09-21 11:23:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 11:23:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,524 INFO L225 Difference]: With dead ends: 524 [2020-09-21 11:23:02,524 INFO L226 Difference]: Without dead ends: 522 [2020-09-21 11:23:02,525 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 11:23:02,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-09-21 11:23:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 392. [2020-09-21 11:23:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-09-21 11:23:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 654 transitions. [2020-09-21 11:23:02,544 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 654 transitions. Word has length 24 [2020-09-21 11:23:02,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,545 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 654 transitions. [2020-09-21 11:23:02,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,545 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 654 transitions. [2020-09-21 11:23:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:23:02,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:23:02,547 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,547 INFO L82 PathProgramCache]: Analyzing trace with hash -903831269, now seen corresponding path program 1 times [2020-09-21 11:23:02,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78644568] [2020-09-21 11:23:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,573 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,573 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,574 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:23:02,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:02,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,595 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,596 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,600 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 11:23:02,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78644568] [2020-09-21 11:23:02,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520371195] [2020-09-21 11:23:02,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,602 INFO L87 Difference]: Start difference. First operand 392 states and 654 transitions. Second operand 3 states. [2020-09-21 11:23:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,627 INFO L93 Difference]: Finished difference Result 924 states and 1552 transitions. [2020-09-21 11:23:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 11:23:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,632 INFO L225 Difference]: With dead ends: 924 [2020-09-21 11:23:02,632 INFO L226 Difference]: Without dead ends: 546 [2020-09-21 11:23:02,633 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 11:23:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-09-21 11:23:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544. [2020-09-21 11:23:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-21 11:23:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 902 transitions. [2020-09-21 11:23:02,653 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 902 transitions. Word has length 24 [2020-09-21 11:23:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,653 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 902 transitions. [2020-09-21 11:23:02,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 902 transitions. [2020-09-21 11:23:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:23:02,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:23:02,655 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,656 INFO L82 PathProgramCache]: Analyzing trace with hash -968887806, now seen corresponding path program 1 times [2020-09-21 11:23:02,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963221129] [2020-09-21 11:23:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,670 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,671 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,671 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,671 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:23:02,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:02,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:02,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,695 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,695 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,696 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,700 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 11:23:02,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963221129] [2020-09-21 11:23:02,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334328091] [2020-09-21 11:23:02,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,703 INFO L87 Difference]: Start difference. First operand 544 states and 902 transitions. Second operand 3 states. [2020-09-21 11:23:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,725 INFO L93 Difference]: Finished difference Result 816 states and 1348 transitions. [2020-09-21 11:23:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 11:23:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,729 INFO L225 Difference]: With dead ends: 816 [2020-09-21 11:23:02,729 INFO L226 Difference]: Without dead ends: 554 [2020-09-21 11:23:02,731 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 11:23:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-09-21 11:23:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 552. [2020-09-21 11:23:02,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-09-21 11:23:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 902 transitions. [2020-09-21 11:23:02,749 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 902 transitions. Word has length 25 [2020-09-21 11:23:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,750 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 902 transitions. [2020-09-21 11:23:02,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,750 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 902 transitions. [2020-09-21 11:23:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:23:02,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:23:02,752 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2046215812, now seen corresponding path program 1 times [2020-09-21 11:23:02,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078473582] [2020-09-21 11:23:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,766 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:23:02,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:02,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,808 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,808 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,811 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 11:23:02,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078473582] [2020-09-21 11:23:02,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761582704] [2020-09-21 11:23:02,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,813 INFO L87 Difference]: Start difference. First operand 552 states and 902 transitions. Second operand 3 states. [2020-09-21 11:23:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,850 INFO L93 Difference]: Finished difference Result 1004 states and 1672 transitions. [2020-09-21 11:23:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 11:23:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,858 INFO L225 Difference]: With dead ends: 1004 [2020-09-21 11:23:02,859 INFO L226 Difference]: Without dead ends: 1002 [2020-09-21 11:23:02,859 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 11:23:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-09-21 11:23:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 776. [2020-09-21 11:23:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-21 11:23:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1238 transitions. [2020-09-21 11:23:02,885 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1238 transitions. Word has length 25 [2020-09-21 11:23:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,886 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 1238 transitions. [2020-09-21 11:23:02,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1238 transitions. [2020-09-21 11:23:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:23:02,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:02,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:23:02,888 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1035098562, now seen corresponding path program 1 times [2020-09-21 11:23:02,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594629164] [2020-09-21 11:23:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,912 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,912 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,912 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:23:02,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:02,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,933 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,933 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,934 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,938 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 11:23:02,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594629164] [2020-09-21 11:23:02,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477015340] [2020-09-21 11:23:02,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,941 INFO L87 Difference]: Start difference. First operand 776 states and 1238 transitions. Second operand 3 states. [2020-09-21 11:23:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,982 INFO L93 Difference]: Finished difference Result 1820 states and 2920 transitions. [2020-09-21 11:23:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 11:23:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,989 INFO L225 Difference]: With dead ends: 1820 [2020-09-21 11:23:02,989 INFO L226 Difference]: Without dead ends: 1066 [2020-09-21 11:23:02,992 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 11:23:02,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-21 11:23:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2020-09-21 11:23:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-21 11:23:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1686 transitions. [2020-09-21 11:23:03,029 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1686 transitions. Word has length 25 [2020-09-21 11:23:03,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,030 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1686 transitions. [2020-09-21 11:23:03,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1686 transitions. [2020-09-21 11:23:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:23:03,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:23:03,032 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,033 INFO L82 PathProgramCache]: Analyzing trace with hash -991604848, now seen corresponding path program 1 times [2020-09-21 11:23:03,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91419386] [2020-09-21 11:23:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,047 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,047 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,047 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,047 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:23:03,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:03,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,067 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 11:23:03,069 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: 8 [2020-09-21 11:23:03,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,072 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 11:23:03,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91419386] [2020-09-21 11:23:03,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389716395] [2020-09-21 11:23:03,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,075 INFO L87 Difference]: Start difference. First operand 1064 states and 1686 transitions. Second operand 3 states. [2020-09-21 11:23:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,105 INFO L93 Difference]: Finished difference Result 1596 states and 2520 transitions. [2020-09-21 11:23:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-21 11:23:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,111 INFO L225 Difference]: With dead ends: 1596 [2020-09-21 11:23:03,111 INFO L226 Difference]: Without dead ends: 1082 [2020-09-21 11:23:03,114 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 11:23:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-09-21 11:23:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1080. [2020-09-21 11:23:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2020-09-21 11:23:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1686 transitions. [2020-09-21 11:23:03,148 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1686 transitions. Word has length 26 [2020-09-21 11:23:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,150 INFO L479 AbstractCegarLoop]: Abstraction has 1080 states and 1686 transitions. [2020-09-21 11:23:03,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1686 transitions. [2020-09-21 11:23:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:23:03,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:23:03,152 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2023498770, now seen corresponding path program 1 times [2020-09-21 11:23:03,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932759151] [2020-09-21 11:23:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,168 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:23:03,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:23:03,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:03,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,191 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,191 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,191 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,192 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,196 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 11:23:03,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932759151] [2020-09-21 11:23:03,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679568670] [2020-09-21 11:23:03,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,200 INFO L87 Difference]: Start difference. First operand 1080 states and 1686 transitions. Second operand 3 states. [2020-09-21 11:23:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,240 INFO L93 Difference]: Finished difference Result 1932 states and 3080 transitions. [2020-09-21 11:23:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-21 11:23:03,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,251 INFO L225 Difference]: With dead ends: 1932 [2020-09-21 11:23:03,251 INFO L226 Difference]: Without dead ends: 1930 [2020-09-21 11:23:03,253 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 11:23:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2020-09-21 11:23:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1544. [2020-09-21 11:23:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-21 11:23:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2342 transitions. [2020-09-21 11:23:03,303 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2342 transitions. Word has length 26 [2020-09-21 11:23:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,303 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 2342 transitions. [2020-09-21 11:23:03,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2342 transitions. [2020-09-21 11:23:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:23:03,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:23:03,308 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1012381520, now seen corresponding path program 1 times [2020-09-21 11:23:03,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778869321] [2020-09-21 11:23:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,324 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,324 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,324 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,324 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:23:03,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:23:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:03,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,347 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,348 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,348 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,352 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 11:23:03,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778869321] [2020-09-21 11:23:03,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313835904] [2020-09-21 11:23:03,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,356 INFO L87 Difference]: Start difference. First operand 1544 states and 2342 transitions. Second operand 3 states. [2020-09-21 11:23:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,407 INFO L93 Difference]: Finished difference Result 3596 states and 5480 transitions. [2020-09-21 11:23:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-21 11:23:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,418 INFO L225 Difference]: With dead ends: 3596 [2020-09-21 11:23:03,418 INFO L226 Difference]: Without dead ends: 2090 [2020-09-21 11:23:03,422 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 11:23:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-09-21 11:23:03,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2088. [2020-09-21 11:23:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2088 states. [2020-09-21 11:23:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3142 transitions. [2020-09-21 11:23:03,501 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3142 transitions. Word has length 26 [2020-09-21 11:23:03,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,502 INFO L479 AbstractCegarLoop]: Abstraction has 2088 states and 3142 transitions. [2020-09-21 11:23:03,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3142 transitions. [2020-09-21 11:23:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:23:03,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 11:23:03,507 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1695832809, now seen corresponding path program 1 times [2020-09-21 11:23:03,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033673230] [2020-09-21 11:23:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,522 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,522 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,523 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:23:03,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:23:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,547 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,547 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,547 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,548 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,553 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 11:23:03,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033673230] [2020-09-21 11:23:03,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46177795] [2020-09-21 11:23:03,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,556 INFO L87 Difference]: Start difference. First operand 2088 states and 3142 transitions. Second operand 3 states. [2020-09-21 11:23:03,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,611 INFO L93 Difference]: Finished difference Result 3132 states and 4696 transitions. [2020-09-21 11:23:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-21 11:23:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,626 INFO L225 Difference]: With dead ends: 3132 [2020-09-21 11:23:03,626 INFO L226 Difference]: Without dead ends: 2122 [2020-09-21 11:23:03,630 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 11:23:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-09-21 11:23:03,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2120. [2020-09-21 11:23:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2120 states. [2020-09-21 11:23:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3142 transitions. [2020-09-21 11:23:03,705 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3142 transitions. Word has length 27 [2020-09-21 11:23:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,705 INFO L479 AbstractCegarLoop]: Abstraction has 2120 states and 3142 transitions. [2020-09-21 11:23:03,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3142 transitions. [2020-09-21 11:23:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:23:03,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 11:23:03,711 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1319270809, now seen corresponding path program 1 times [2020-09-21 11:23:03,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514065779] [2020-09-21 11:23:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,724 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,725 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,725 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:23:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:23:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,749 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,750 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,750 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,750 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,755 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 11:23:03,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514065779] [2020-09-21 11:23:03,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368854447] [2020-09-21 11:23:03,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,758 INFO L87 Difference]: Start difference. First operand 2120 states and 3142 transitions. Second operand 3 states. [2020-09-21 11:23:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,831 INFO L93 Difference]: Finished difference Result 3724 states and 5640 transitions. [2020-09-21 11:23:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-21 11:23:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,855 INFO L225 Difference]: With dead ends: 3724 [2020-09-21 11:23:03,856 INFO L226 Difference]: Without dead ends: 3722 [2020-09-21 11:23:03,857 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 11:23:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2020-09-21 11:23:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3080. [2020-09-21 11:23:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3080 states. [2020-09-21 11:23:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 4422 transitions. [2020-09-21 11:23:03,976 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 4422 transitions. Word has length 27 [2020-09-21 11:23:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,977 INFO L479 AbstractCegarLoop]: Abstraction has 3080 states and 4422 transitions. [2020-09-21 11:23:03,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 4422 transitions. [2020-09-21 11:23:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:23:03,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:03,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 11:23:03,985 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,986 INFO L82 PathProgramCache]: Analyzing trace with hash 308153559, now seen corresponding path program 1 times [2020-09-21 11:23:03,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194740] [2020-09-21 11:23:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,002 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,002 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,003 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:23:04,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:23:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,027 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,027 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,027 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: 8 [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:04,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,030 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 11:23:04,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194740] [2020-09-21 11:23:04,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:04,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:04,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646952224] [2020-09-21 11:23:04,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:04,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:04,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:04,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:04,033 INFO L87 Difference]: Start difference. First operand 3080 states and 4422 transitions. Second operand 3 states. [2020-09-21 11:23:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:04,151 INFO L93 Difference]: Finished difference Result 7116 states and 10248 transitions. [2020-09-21 11:23:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:04,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-21 11:23:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:04,169 INFO L225 Difference]: With dead ends: 7116 [2020-09-21 11:23:04,170 INFO L226 Difference]: Without dead ends: 4106 [2020-09-21 11:23:04,175 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 11:23:04,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2020-09-21 11:23:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4104. [2020-09-21 11:23:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4104 states. [2020-09-21 11:23:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5830 transitions. [2020-09-21 11:23:04,291 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5830 transitions. Word has length 27 [2020-09-21 11:23:04,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:04,291 INFO L479 AbstractCegarLoop]: Abstraction has 4104 states and 5830 transitions. [2020-09-21 11:23:04,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5830 transitions. [2020-09-21 11:23:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:23:04,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:04,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:04,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-21 11:23:04,298 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:04,298 INFO L82 PathProgramCache]: Analyzing trace with hash -2052062779, now seen corresponding path program 1 times [2020-09-21 11:23:04,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:04,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450403296] [2020-09-21 11:23:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,310 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,310 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,310 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:23:04,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:23:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,328 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,329 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:04,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:04,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,333 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 11:23:04,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450403296] [2020-09-21 11:23:04,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:04,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:04,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695770646] [2020-09-21 11:23:04,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:04,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:04,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:04,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:04,335 INFO L87 Difference]: Start difference. First operand 4104 states and 5830 transitions. Second operand 3 states. [2020-09-21 11:23:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:04,403 INFO L93 Difference]: Finished difference Result 6156 states and 8712 transitions. [2020-09-21 11:23:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:04,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-21 11:23:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:04,424 INFO L225 Difference]: With dead ends: 6156 [2020-09-21 11:23:04,424 INFO L226 Difference]: Without dead ends: 4170 [2020-09-21 11:23:04,429 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 11:23:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2020-09-21 11:23:04,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 4168. [2020-09-21 11:23:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4168 states. [2020-09-21 11:23:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 5830 transitions. [2020-09-21 11:23:04,539 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 5830 transitions. Word has length 28 [2020-09-21 11:23:04,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:04,539 INFO L479 AbstractCegarLoop]: Abstraction has 4168 states and 5830 transitions. [2020-09-21 11:23:04,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:04,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 5830 transitions. [2020-09-21 11:23:04,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:23:04,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:04,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:04,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-21 11:23:04,545 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:04,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:04,546 INFO L82 PathProgramCache]: Analyzing trace with hash 963040839, now seen corresponding path program 1 times [2020-09-21 11:23:04,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:04,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502129088] [2020-09-21 11:23:04,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,556 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,557 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,557 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,557 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:23:04,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:23:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,574 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,574 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,574 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:04,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:23:04,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:04,578 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 11:23:04,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502129088] [2020-09-21 11:23:04,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:04,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:04,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397920308] [2020-09-21 11:23:04,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:04,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:04,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:04,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:04,580 INFO L87 Difference]: Start difference. First operand 4168 states and 5830 transitions. Second operand 3 states. [2020-09-21 11:23:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:04,706 INFO L93 Difference]: Finished difference Result 12108 states and 16712 transitions. [2020-09-21 11:23:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:04,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-21 11:23:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:04,726 INFO L225 Difference]: With dead ends: 12108 [2020-09-21 11:23:04,726 INFO L226 Difference]: Without dead ends: 8074 [2020-09-21 11:23:04,737 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 11:23:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2020-09-21 11:23:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 8072. [2020-09-21 11:23:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8072 states. [2020-09-21 11:23:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 10886 transitions. [2020-09-21 11:23:04,974 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 10886 transitions. Word has length 28 [2020-09-21 11:23:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:04,974 INFO L479 AbstractCegarLoop]: Abstraction has 8072 states and 10886 transitions. [2020-09-21 11:23:04,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 10886 transitions. [2020-09-21 11:23:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:23:04,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:04,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:04,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-21 11:23:04,985 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:04,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1974158089, now seen corresponding path program 1 times [2020-09-21 11:23:04,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:04,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679285504] [2020-09-21 11:23:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,998 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,998 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,998 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,998 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:23:04,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:04,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:23:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,017 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,017 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,017 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,018 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,021 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 11:23:05,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679285504] [2020-09-21 11:23:05,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174821338] [2020-09-21 11:23:05,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,023 INFO L87 Difference]: Start difference. First operand 8072 states and 10886 transitions. Second operand 3 states. [2020-09-21 11:23:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,141 INFO L93 Difference]: Finished difference Result 9100 states and 12680 transitions. [2020-09-21 11:23:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-21 11:23:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,162 INFO L225 Difference]: With dead ends: 9100 [2020-09-21 11:23:05,162 INFO L226 Difference]: Without dead ends: 9098 [2020-09-21 11:23:05,166 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 11:23:05,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9098 states. [2020-09-21 11:23:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9098 to 8072. [2020-09-21 11:23:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8072 states. [2020-09-21 11:23:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 10758 transitions. [2020-09-21 11:23:05,417 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 10758 transitions. Word has length 28 [2020-09-21 11:23:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,417 INFO L479 AbstractCegarLoop]: Abstraction has 8072 states and 10758 transitions. [2020-09-21 11:23:05,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 10758 transitions. [2020-09-21 11:23:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:23:05,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:05,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-21 11:23:05,428 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,429 INFO L82 PathProgramCache]: Analyzing trace with hash -210289620, now seen corresponding path program 1 times [2020-09-21 11:23:05,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219950912] [2020-09-21 11:23:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,440 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,440 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:23:05,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:23:05,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:05,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,462 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,462 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,462 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,465 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 11:23:05,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219950912] [2020-09-21 11:23:05,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764597321] [2020-09-21 11:23:05,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,467 INFO L87 Difference]: Start difference. First operand 8072 states and 10758 transitions. Second operand 3 states. [2020-09-21 11:23:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,604 INFO L93 Difference]: Finished difference Result 13708 states and 18568 transitions. [2020-09-21 11:23:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-21 11:23:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,630 INFO L225 Difference]: With dead ends: 13708 [2020-09-21 11:23:05,630 INFO L226 Difference]: Without dead ends: 13706 [2020-09-21 11:23:05,637 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 11:23:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13706 states. [2020-09-21 11:23:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13706 to 12168. [2020-09-21 11:23:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12168 states. [2020-09-21 11:23:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 15750 transitions. [2020-09-21 11:23:05,873 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 15750 transitions. Word has length 29 [2020-09-21 11:23:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,873 INFO L479 AbstractCegarLoop]: Abstraction has 12168 states and 15750 transitions. [2020-09-21 11:23:05,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 15750 transitions. [2020-09-21 11:23:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:23:05,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:05,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-21 11:23:05,894 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1221406870, now seen corresponding path program 1 times [2020-09-21 11:23:05,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640672602] [2020-09-21 11:23:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,907 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,907 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:23:05,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:23:05,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,925 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,926 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,926 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,931 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 11:23:05,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640672602] [2020-09-21 11:23:05,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362215905] [2020-09-21 11:23:05,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,933 INFO L87 Difference]: Start difference. First operand 12168 states and 15750 transitions. Second operand 3 states. [2020-09-21 11:23:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,156 INFO L93 Difference]: Finished difference Result 27788 states and 35976 transitions. [2020-09-21 11:23:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-21 11:23:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,183 INFO L225 Difference]: With dead ends: 27788 [2020-09-21 11:23:06,183 INFO L226 Difference]: Without dead ends: 15754 [2020-09-21 11:23:06,206 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 11:23:06,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2020-09-21 11:23:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 15752. [2020-09-21 11:23:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15752 states. [2020-09-21 11:23:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15752 states to 15752 states and 19974 transitions. [2020-09-21 11:23:06,625 INFO L78 Accepts]: Start accepts. Automaton has 15752 states and 19974 transitions. Word has length 29 [2020-09-21 11:23:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,625 INFO L479 AbstractCegarLoop]: Abstraction has 15752 states and 19974 transitions. [2020-09-21 11:23:06,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 15752 states and 19974 transitions. [2020-09-21 11:23:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:23:06,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:06,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-21 11:23:06,644 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2071172156, now seen corresponding path program 1 times [2020-09-21 11:23:06,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972747842] [2020-09-21 11:23:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,657 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,657 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,657 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,657 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 11:23:06,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:23:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:06,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,673 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,673 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,673 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,677 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 11:23:06,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972747842] [2020-09-21 11:23:06,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044569945] [2020-09-21 11:23:06,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,679 INFO L87 Difference]: Start difference. First operand 15752 states and 19974 transitions. Second operand 3 states. [2020-09-21 11:23:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,844 INFO L93 Difference]: Finished difference Result 23820 states and 30216 transitions. [2020-09-21 11:23:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-21 11:23:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,874 INFO L225 Difference]: With dead ends: 23820 [2020-09-21 11:23:06,874 INFO L226 Difference]: Without dead ends: 16138 [2020-09-21 11:23:06,891 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 11:23:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2020-09-21 11:23:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 16136. [2020-09-21 11:23:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16136 states. [2020-09-21 11:23:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 20230 transitions. [2020-09-21 11:23:07,166 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 20230 transitions. Word has length 30 [2020-09-21 11:23:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:07,166 INFO L479 AbstractCegarLoop]: Abstraction has 16136 states and 20230 transitions. [2020-09-21 11:23:07,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 20230 transitions. [2020-09-21 11:23:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:23:07,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:07,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:07,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-21 11:23:07,185 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:07,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:07,186 INFO L82 PathProgramCache]: Analyzing trace with hash 791308478, now seen corresponding path program 1 times [2020-09-21 11:23:07,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:07,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252481365] [2020-09-21 11:23:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:07,197 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:07,197 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:07,197 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:07,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:07,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 11:23:07,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:07,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:07,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:07,216 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:07,216 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:07,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:07,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:07,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:07,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:07,220 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 11:23:07,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252481365] [2020-09-21 11:23:07,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:07,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:07,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959989207] [2020-09-21 11:23:07,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:07,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:07,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:07,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:07,222 INFO L87 Difference]: Start difference. First operand 16136 states and 20230 transitions. Second operand 3 states. [2020-09-21 11:23:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:07,891 INFO L93 Difference]: Finished difference Result 26636 states and 33544 transitions. [2020-09-21 11:23:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:07,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-21 11:23:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:07,941 INFO L225 Difference]: With dead ends: 26636 [2020-09-21 11:23:07,942 INFO L226 Difference]: Without dead ends: 26634 [2020-09-21 11:23:07,947 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 11:23:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26634 states. [2020-09-21 11:23:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26634 to 24584. [2020-09-21 11:23:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24584 states. [2020-09-21 11:23:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24584 states to 24584 states and 29958 transitions. [2020-09-21 11:23:08,353 INFO L78 Accepts]: Start accepts. Automaton has 24584 states and 29958 transitions. Word has length 30 [2020-09-21 11:23:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:08,353 INFO L479 AbstractCegarLoop]: Abstraction has 24584 states and 29958 transitions. [2020-09-21 11:23:08,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 24584 states and 29958 transitions. [2020-09-21 11:23:08,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:23:08,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:08,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:08,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-21 11:23:08,481 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:08,482 INFO L82 PathProgramCache]: Analyzing trace with hash -219808772, now seen corresponding path program 1 times [2020-09-21 11:23:08,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:08,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740210981] [2020-09-21 11:23:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:08,494 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:08,495 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:08,495 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 11:23:08,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:08,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:08,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:08,516 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:08,517 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:08,517 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:08,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:08,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:08,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:08,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:08,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:08,521 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 11:23:08,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740210981] [2020-09-21 11:23:08,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:08,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:08,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776359549] [2020-09-21 11:23:08,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:08,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:08,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:08,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:08,523 INFO L87 Difference]: Start difference. First operand 24584 states and 29958 transitions. Second operand 3 states. [2020-09-21 11:23:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:08,844 INFO L93 Difference]: Finished difference Result 55308 states and 66824 transitions. [2020-09-21 11:23:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:08,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-21 11:23:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:08,898 INFO L225 Difference]: With dead ends: 55308 [2020-09-21 11:23:08,898 INFO L226 Difference]: Without dead ends: 31242 [2020-09-21 11:23:08,945 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 11:23:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31242 states. [2020-09-21 11:23:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31242 to 31240. [2020-09-21 11:23:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31240 states. [2020-09-21 11:23:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31240 states to 31240 states and 36870 transitions. [2020-09-21 11:23:09,714 INFO L78 Accepts]: Start accepts. Automaton has 31240 states and 36870 transitions. Word has length 30 [2020-09-21 11:23:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:09,714 INFO L479 AbstractCegarLoop]: Abstraction has 31240 states and 36870 transitions. [2020-09-21 11:23:09,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 31240 states and 36870 transitions. [2020-09-21 11:23:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:23:09,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:09,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:09,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-21 11:23:09,740 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:09,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:09,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1239024833, now seen corresponding path program 1 times [2020-09-21 11:23:09,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:09,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966487029] [2020-09-21 11:23:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:09,753 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:09,753 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:09,753 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:09,754 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:09,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:23:09,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:09,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:09,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:09,770 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:09,771 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:09,771 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:09,771 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:09,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:09,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:09,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:09,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:09,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:09,775 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 11:23:09,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966487029] [2020-09-21 11:23:09,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:09,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:09,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484596427] [2020-09-21 11:23:09,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:09,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:09,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:09,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:09,777 INFO L87 Difference]: Start difference. First operand 31240 states and 36870 transitions. Second operand 3 states. [2020-09-21 11:23:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:10,065 INFO L93 Difference]: Finished difference Result 46860 states and 55048 transitions. [2020-09-21 11:23:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:10,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-21 11:23:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:10,103 INFO L225 Difference]: With dead ends: 46860 [2020-09-21 11:23:10,103 INFO L226 Difference]: Without dead ends: 31754 [2020-09-21 11:23:10,129 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 11:23:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31754 states. [2020-09-21 11:23:11,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31754 to 31752. [2020-09-21 11:23:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31752 states. [2020-09-21 11:23:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31752 states to 31752 states and 36870 transitions. [2020-09-21 11:23:11,493 INFO L78 Accepts]: Start accepts. Automaton has 31752 states and 36870 transitions. Word has length 31 [2020-09-21 11:23:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:11,493 INFO L479 AbstractCegarLoop]: Abstraction has 31752 states and 36870 transitions. [2020-09-21 11:23:11,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 31752 states and 36870 transitions. [2020-09-21 11:23:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:23:11,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:11,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:11,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-21 11:23:11,530 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1776078785, now seen corresponding path program 1 times [2020-09-21 11:23:11,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:11,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121017199] [2020-09-21 11:23:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:11,549 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:11,549 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:11,550 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:11,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:11,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:23:11,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:11,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 11:23:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:23:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:11,589 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:11,590 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:11,590 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:11,590 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:11,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:11,593 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 11:23:11,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121017199] [2020-09-21 11:23:11,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:11,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:11,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723869422] [2020-09-21 11:23:11,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:11,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:11,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:11,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:11,595 INFO L87 Difference]: Start difference. First operand 31752 states and 36870 transitions. Second operand 3 states. [2020-09-21 11:23:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:12,084 INFO L93 Difference]: Finished difference Result 51210 states and 58887 transitions. [2020-09-21 11:23:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:12,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-21 11:23:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:12,127 INFO L225 Difference]: With dead ends: 51210 [2020-09-21 11:23:12,128 INFO L226 Difference]: Without dead ends: 51208 [2020-09-21 11:23:12,138 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 11:23:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51208 states. [2020-09-21 11:23:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51208 to 49160. [2020-09-21 11:23:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49160 states. [2020-09-21 11:23:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49160 states to 49160 states and 55814 transitions. [2020-09-21 11:23:12,980 INFO L78 Accepts]: Start accepts. Automaton has 49160 states and 55814 transitions. Word has length 31 [2020-09-21 11:23:12,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:12,980 INFO L479 AbstractCegarLoop]: Abstraction has 49160 states and 55814 transitions. [2020-09-21 11:23:12,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 49160 states and 55814 transitions. [2020-09-21 11:23:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:23:13,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:13,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:13,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-21 11:23:13,013 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:13,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:13,013 INFO L82 PathProgramCache]: Analyzing trace with hash 764961535, now seen corresponding path program 1 times [2020-09-21 11:23:13,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:13,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311198408] [2020-09-21 11:23:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:13,024 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:13,025 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:13,025 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:13,025 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:13,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:23:13,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:13,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 11:23:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:13,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:13,046 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:13,046 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:13,046 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:13,046 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:13,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:13,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:13,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:13,050 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 11:23:13,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311198408] [2020-09-21 11:23:13,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:13,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:13,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267860403] [2020-09-21 11:23:13,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:13,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:13,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:13,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:13,052 INFO L87 Difference]: Start difference. First operand 49160 states and 55814 transitions. Second operand 3 states. [2020-09-21 11:23:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:13,541 INFO L93 Difference]: Finished difference Result 109576 states and 122374 transitions. [2020-09-21 11:23:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:13,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-21 11:23:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:13,542 INFO L225 Difference]: With dead ends: 109576 [2020-09-21 11:23:13,542 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:23:13,632 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 11:23:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:23:13,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:23:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:23:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:23:13,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-09-21 11:23:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:13,633 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:23:13,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:23:13,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:23:13,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-21 11:23:13,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:23:13,664 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:23:13,664 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:23:13,664 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:23:13,664 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:23:13,665 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:23:13,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:23:13,665 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 177) no Hoare annotation was computed. [2020-09-21 11:23:13,665 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-09-21 11:23:13,665 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-09-21 11:23:13,665 INFO L268 CegarLoopResult]: For program point L44(lines 44 46) no Hoare annotation was computed. [2020-09-21 11:23:13,665 INFO L268 CegarLoopResult]: For program point L168(line 168) no Hoare annotation was computed. [2020-09-21 11:23:13,666 INFO L264 CegarLoopResult]: At program point L168-1(lines 5 177) the Hoare annotation is: false [2020-09-21 11:23:13,666 INFO L268 CegarLoopResult]: For program point L127-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,666 INFO L268 CegarLoopResult]: For program point L152-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,666 INFO L268 CegarLoopResult]: For program point L111-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,666 INFO L268 CegarLoopResult]: For program point L103-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,666 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-09-21 11:23:13,666 INFO L268 CegarLoopResult]: For program point L95-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,666 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-09-21 11:23:13,667 INFO L268 CegarLoopResult]: For program point L87-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,667 INFO L268 CegarLoopResult]: For program point L79-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,667 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 177) no Hoare annotation was computed. [2020-09-21 11:23:13,667 INFO L268 CegarLoopResult]: For program point L137-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,667 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-09-21 11:23:13,667 INFO L268 CegarLoopResult]: For program point L71-2(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,667 INFO L268 CegarLoopResult]: For program point L162-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,668 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-09-21 11:23:13,668 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 177) the Hoare annotation is: true [2020-09-21 11:23:13,668 INFO L268 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-09-21 11:23:13,668 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-09-21 11:23:13,668 INFO L268 CegarLoopResult]: For program point L122-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,668 INFO L268 CegarLoopResult]: For program point L147-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,668 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-09-21 11:23:13,668 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-21 11:23:13,669 INFO L271 CegarLoopResult]: At program point L173(lines 5 177) the Hoare annotation is: true [2020-09-21 11:23:13,669 INFO L268 CegarLoopResult]: For program point L107-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,669 INFO L268 CegarLoopResult]: For program point L132-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,669 INFO L268 CegarLoopResult]: For program point L99-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,669 INFO L268 CegarLoopResult]: For program point L157-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,669 INFO L268 CegarLoopResult]: For program point L91-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,669 INFO L268 CegarLoopResult]: For program point L83-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,670 INFO L268 CegarLoopResult]: For program point L75-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,670 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-09-21 11:23:13,670 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-09-21 11:23:13,670 INFO L268 CegarLoopResult]: For program point L117-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,670 INFO L268 CegarLoopResult]: For program point L142-1(lines 42 172) no Hoare annotation was computed. [2020-09-21 11:23:13,670 INFO L271 CegarLoopResult]: At program point L167-1(lines 42 172) the Hoare annotation is: true [2020-09-21 11:23:13,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:23:13 BoogieIcfgContainer [2020-09-21 11:23:13,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:23:13,687 INFO L168 Benchmark]: Toolchain (without parser) took 13975.11 ms. Allocated memory was 138.9 MB in the beginning and 1.0 GB in the end (delta: 887.1 MB). Free memory was 102.5 MB in the beginning and 246.8 MB in the end (delta: -144.3 MB). Peak memory consumption was 742.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:13,687 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:23:13,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.57 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:13,688 INFO L168 Benchmark]: Boogie Preprocessor took 132.32 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 179.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:13,689 INFO L168 Benchmark]: RCFGBuilder took 446.27 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 158.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:13,689 INFO L168 Benchmark]: TraceAbstraction took 12958.15 ms. Allocated memory was 201.9 MB in the beginning and 1.0 GB in the end (delta: 824.2 MB). Free memory was 158.3 MB in the beginning and 246.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 735.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:13,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 428.57 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.32 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 179.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.27 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 158.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12958.15 ms. Allocated memory was 201.9 MB in the beginning and 1.0 GB in the end (delta: 824.2 MB). Free memory was 158.3 MB in the beginning and 246.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 735.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: 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: 42]: 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, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.8s, OverallIterations: 31, TraceHistogramMax: 1, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2877 SDtfs, 1405 SDslu, 1967 SDs, 0 SdLazy, 165 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49160occurred in iteration=30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 31 MinimizatonAttempts, 8224 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 2058 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 808 NumberOfCodeBlocks, 808 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 777 ConstructedInterpolants, 0 QuantifiedInterpolants, 39912 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 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...