/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_10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:22:56,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:22:56,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:22:56,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:22:56,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:22:56,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:22:56,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:22:56,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:22:56,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:22:56,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:22:56,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:22:56,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:22:56,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:22:56,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:22:56,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:22:56,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:22:56,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:22:56,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:22:56,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:22:56,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:22:56,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:22:56,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:22:56,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:22:56,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:22:56,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:22:56,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:22:56,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:22:56,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:22:56,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:22:56,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:22:56,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:22:56,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:22:56,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:22:56,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:22:56,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:22:56,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:22:56,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:22:56,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:22:56,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:22:56,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:22:56,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:22:56,826 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 11:22:56,874 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:22:56,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:22:56,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:22:56,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:22:56,876 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:22:56,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:22:56,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:22:56,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:22:56,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:22:56,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:22:56,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:22:56,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:22:56,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:22:56,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:22:56,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:22:56,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:22:56,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:22:56,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:22:56,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:22:56,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:22:56,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:22:56,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:22:56,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:22:56,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:22:56,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:22:56,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:22:56,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:22:56,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:22:56,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:22:56,881 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 11:22:57,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:22:57,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:22:57,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:22:57,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:22:57,353 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:22:57,355 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-09-21 11:22:57,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7ed25068/1f1639074b8d47d3b257c714e502a04f/FLAGc814ddbd4 [2020-09-21 11:22:57,976 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:22:57,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_10.c [2020-09-21 11:22:57,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7ed25068/1f1639074b8d47d3b257c714e502a04f/FLAGc814ddbd4 [2020-09-21 11:22:58,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7ed25068/1f1639074b8d47d3b257c714e502a04f [2020-09-21 11:22:58,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:22:58,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:22:58,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:22:58,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:22:58,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:22:58,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c7438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58, skipping insertion in model container [2020-09-21 11:22:58,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:22:58,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:22:58,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:22:58,622 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:22:58,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:22:58,687 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:22:58,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58 WrapperNode [2020-09-21 11:22:58,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:22:58,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:22:58,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:22:58,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:22:58,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (1/1) ... [2020-09-21 11:22:58,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:22:58,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:22:58,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:22:58,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:22:58,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (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 11:22:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:22:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:22:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:22:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:22:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:22:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:22:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:22:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:22:59,216 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:22:59,217 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:22:59,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:22:59 BoogieIcfgContainer [2020-09-21 11:22:59,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:22:59,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:22:59,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:22:59,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:22:59,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:22:58" (1/3) ... [2020-09-21 11:22:59,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15720715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:22:59, skipping insertion in model container [2020-09-21 11:22:59,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:22:58" (2/3) ... [2020-09-21 11:22:59,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15720715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:22:59, skipping insertion in model container [2020-09-21 11:22:59,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:22:59" (3/3) ... [2020-09-21 11:22:59,234 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-09-21 11:22:59,250 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:22:59,261 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:22:59,286 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:22:59,330 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:22:59,330 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:22:59,330 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:22:59,331 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:22:59,331 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:22:59,331 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:22:59,331 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:22:59,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:22:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-21 11:22:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:22:59,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:59,367 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] [2020-09-21 11:22:59,368 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:59,374 INFO L82 PathProgramCache]: Analyzing trace with hash -917347053, now seen corresponding path program 1 times [2020-09-21 11:22:59,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:59,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360153390] [2020-09-21 11:22:59,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:59,551 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:59,551 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:59,551 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:59,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:22:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:22:59,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:22:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:22:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:22:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:59,644 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:59,644 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:59,644 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:59,645 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:59,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:59,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:59,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:22:59,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:59,656 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 11:22:59,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360153390] [2020-09-21 11:22:59,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:59,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:59,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803473103] [2020-09-21 11:22:59,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:59,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:59,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:59,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:59,691 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-21 11:22:59,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:22:59,783 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2020-09-21 11:22:59,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:22:59,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 11:22:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:22:59,799 INFO L225 Difference]: With dead ends: 87 [2020-09-21 11:22:59,799 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 11:22:59,804 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 11:22:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 11:22:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2020-09-21 11:22:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-21 11:22:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 89 transitions. [2020-09-21 11:22:59,862 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 89 transitions. Word has length 20 [2020-09-21 11:22:59,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:22:59,863 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 89 transitions. [2020-09-21 11:22:59,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:22:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 89 transitions. [2020-09-21 11:22:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:22:59,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:22:59,865 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] [2020-09-21 11:22:59,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:22:59,866 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:22:59,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:22:59,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1504153067, now seen corresponding path program 1 times [2020-09-21 11:22:59,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:22:59,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362750438] [2020-09-21 11:22:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:22:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:59,902 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:59,902 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:59,902 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:59,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:59,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:22:59,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:22:59,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:22:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:22:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:22:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:59,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:22:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:22:59,964 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:22:59,965 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:22:59,965 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:22:59,965 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:22:59,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:22:59,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:22:59,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:22:59,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:22:59,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:22:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:22:59,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:22:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:22:59,971 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 11:22:59,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362750438] [2020-09-21 11:22:59,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:22:59,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:22:59,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553476540] [2020-09-21 11:22:59,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:22:59,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:22:59,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:22:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:22:59,976 INFO L87 Difference]: Start difference. First operand 50 states and 89 transitions. Second operand 3 states. [2020-09-21 11:23:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:00,010 INFO L93 Difference]: Finished difference Result 117 states and 212 transitions. [2020-09-21 11:23:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:00,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 11:23:00,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:00,013 INFO L225 Difference]: With dead ends: 117 [2020-09-21 11:23:00,014 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 11:23:00,018 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 11:23:00,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 11:23:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-09-21 11:23:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-21 11:23:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 125 transitions. [2020-09-21 11:23:00,043 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 125 transitions. Word has length 20 [2020-09-21 11:23:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:00,043 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 125 transitions. [2020-09-21 11:23:00,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 125 transitions. [2020-09-21 11:23:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:23:00,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,047 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 11:23:00,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:23:00,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1627225809, now seen corresponding path program 1 times [2020-09-21 11:23:00,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549929490] [2020-09-21 11:23:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,109 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,109 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,111 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,111 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:23:00,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:23:00,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,168 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:00,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:00,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,176 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 11:23:00,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549929490] [2020-09-21 11:23:00,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:00,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:00,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757024939] [2020-09-21 11:23:00,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:00,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:00,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:00,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:00,188 INFO L87 Difference]: Start difference. First operand 70 states and 125 transitions. Second operand 3 states. [2020-09-21 11:23:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:00,217 INFO L93 Difference]: Finished difference Result 108 states and 189 transitions. [2020-09-21 11:23:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:00,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:23:00,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:00,219 INFO L225 Difference]: With dead ends: 108 [2020-09-21 11:23:00,219 INFO L226 Difference]: Without dead ends: 75 [2020-09-21 11:23:00,220 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 11:23:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-21 11:23:00,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-09-21 11:23:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-21 11:23:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 127 transitions. [2020-09-21 11:23:00,232 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 127 transitions. Word has length 21 [2020-09-21 11:23:00,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:00,233 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 127 transitions. [2020-09-21 11:23:00,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 127 transitions. [2020-09-21 11:23:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:23:00,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,234 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 11:23:00,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:23:00,235 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,235 INFO L82 PathProgramCache]: Analyzing trace with hash 616108559, now seen corresponding path program 1 times [2020-09-21 11:23:00,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764051528] [2020-09-21 11:23:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,260 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:23:00,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:00,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:00,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:00,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:00,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:00,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,291 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,291 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,292 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,292 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:00,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:00,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:00,297 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 11:23:00,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764051528] [2020-09-21 11:23:00,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:00,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:00,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276288862] [2020-09-21 11:23:00,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:00,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:00,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:00,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:00,300 INFO L87 Difference]: Start difference. First operand 73 states and 127 transitions. Second operand 3 states. [2020-09-21 11:23:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:00,322 INFO L93 Difference]: Finished difference Result 136 states and 240 transitions. [2020-09-21 11:23:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:00,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:23:00,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:00,325 INFO L225 Difference]: With dead ends: 136 [2020-09-21 11:23:00,325 INFO L226 Difference]: Without dead ends: 134 [2020-09-21 11:23:00,326 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 11:23:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-21 11:23:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 96. [2020-09-21 11:23:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-21 11:23:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 168 transitions. [2020-09-21 11:23:00,342 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 168 transitions. Word has length 21 [2020-09-21 11:23:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:00,344 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 168 transitions. [2020-09-21 11:23:00,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 168 transitions. [2020-09-21 11:23:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:23:00,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,345 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 11:23:00,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:23:00,345 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,346 INFO L82 PathProgramCache]: Analyzing trace with hash 29302545, now seen corresponding path program 1 times [2020-09-21 11:23:00,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33339537] [2020-09-21 11:23:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,395 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:23:00,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:00,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,454 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,454 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,455 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,455 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:00,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:00,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,459 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 11:23:00,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33339537] [2020-09-21 11:23:00,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:00,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:00,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861726913] [2020-09-21 11:23:00,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:00,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:00,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:00,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:00,463 INFO L87 Difference]: Start difference. First operand 96 states and 168 transitions. Second operand 3 states. [2020-09-21 11:23:00,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:00,503 INFO L93 Difference]: Finished difference Result 224 states and 398 transitions. [2020-09-21 11:23:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:00,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:23:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:00,507 INFO L225 Difference]: With dead ends: 224 [2020-09-21 11:23:00,508 INFO L226 Difference]: Without dead ends: 136 [2020-09-21 11:23:00,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-21 11:23:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-09-21 11:23:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-21 11:23:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 234 transitions. [2020-09-21 11:23:00,522 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 234 transitions. Word has length 21 [2020-09-21 11:23:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:00,524 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 234 transitions. [2020-09-21 11:23:00,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 234 transitions. [2020-09-21 11:23:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:23:00,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,526 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 11:23:00,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:23:00,527 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1919709866, now seen corresponding path program 1 times [2020-09-21 11:23:00,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553331447] [2020-09-21 11:23:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,560 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,560 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:23:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:23:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,607 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,607 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,607 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,608 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:00,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:00,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:00,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:00,612 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 11:23:00,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553331447] [2020-09-21 11:23:00,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:00,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:00,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955601738] [2020-09-21 11:23:00,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:00,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:00,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:00,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:00,617 INFO L87 Difference]: Start difference. First operand 134 states and 234 transitions. Second operand 3 states. [2020-09-21 11:23:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:00,646 INFO L93 Difference]: Finished difference Result 201 states and 349 transitions. [2020-09-21 11:23:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:00,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 11:23:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:00,649 INFO L225 Difference]: With dead ends: 201 [2020-09-21 11:23:00,649 INFO L226 Difference]: Without dead ends: 138 [2020-09-21 11:23:00,651 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 11:23:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-21 11:23:00,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-09-21 11:23:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-21 11:23:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 234 transitions. [2020-09-21 11:23:00,677 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 234 transitions. Word has length 22 [2020-09-21 11:23:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:00,677 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 234 transitions. [2020-09-21 11:23:00,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 234 transitions. [2020-09-21 11:23:00,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:23:00,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,681 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 11:23:00,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:23:00,681 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,682 INFO L82 PathProgramCache]: Analyzing trace with hash 908592616, now seen corresponding path program 1 times [2020-09-21 11:23:00,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788853909] [2020-09-21 11:23:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,711 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,711 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,711 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:23:00,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,751 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,751 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,751 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,751 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:00,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:00,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,755 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 11:23:00,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788853909] [2020-09-21 11:23:00,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:00,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:00,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575451386] [2020-09-21 11:23:00,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:00,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:00,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:00,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:00,758 INFO L87 Difference]: Start difference. First operand 136 states and 234 transitions. Second operand 3 states. [2020-09-21 11:23:00,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:00,776 INFO L93 Difference]: Finished difference Result 252 states and 440 transitions. [2020-09-21 11:23:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:00,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 11:23:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:00,778 INFO L225 Difference]: With dead ends: 252 [2020-09-21 11:23:00,779 INFO L226 Difference]: Without dead ends: 250 [2020-09-21 11:23:00,779 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 11:23:00,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-21 11:23:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 184. [2020-09-21 11:23:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-21 11:23:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 314 transitions. [2020-09-21 11:23:00,791 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 314 transitions. Word has length 22 [2020-09-21 11:23:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:00,792 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 314 transitions. [2020-09-21 11:23:00,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 314 transitions. [2020-09-21 11:23:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:23:00,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,794 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 11:23:00,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:23:00,794 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash 321786602, now seen corresponding path program 1 times [2020-09-21 11:23:00,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138324971] [2020-09-21 11:23:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,808 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,809 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:23:00,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:00,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,830 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,830 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,830 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,830 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:00,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:00,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:00,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,834 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 11:23:00,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138324971] [2020-09-21 11:23:00,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:00,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:00,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654310947] [2020-09-21 11:23:00,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:00,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:00,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:00,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:00,836 INFO L87 Difference]: Start difference. First operand 184 states and 314 transitions. Second operand 3 states. [2020-09-21 11:23:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:00,857 INFO L93 Difference]: Finished difference Result 432 states and 744 transitions. [2020-09-21 11:23:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:00,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 11:23:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:00,859 INFO L225 Difference]: With dead ends: 432 [2020-09-21 11:23:00,860 INFO L226 Difference]: Without dead ends: 258 [2020-09-21 11:23:00,861 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 11:23:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-21 11:23:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-09-21 11:23:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-21 11:23:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 434 transitions. [2020-09-21 11:23:00,872 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 434 transitions. Word has length 22 [2020-09-21 11:23:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:00,873 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 434 transitions. [2020-09-21 11:23:00,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 434 transitions. [2020-09-21 11:23:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:23:00,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,875 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 11:23:00,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:23:00,875 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1898185914, now seen corresponding path program 1 times [2020-09-21 11:23:00,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969636427] [2020-09-21 11:23:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,888 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,889 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,889 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:23:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:00,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:00,919 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:00,919 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:00,920 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:00,920 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:00,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:00,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:00,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:00,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:00,924 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 11:23:00,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969636427] [2020-09-21 11:23:00,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:00,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:00,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33223760] [2020-09-21 11:23:00,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:00,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:00,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:00,929 INFO L87 Difference]: Start difference. First operand 256 states and 434 transitions. Second operand 3 states. [2020-09-21 11:23:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:00,958 INFO L93 Difference]: Finished difference Result 384 states and 648 transitions. [2020-09-21 11:23:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:00,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 11:23:00,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:00,961 INFO L225 Difference]: With dead ends: 384 [2020-09-21 11:23:00,961 INFO L226 Difference]: Without dead ends: 262 [2020-09-21 11:23:00,962 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 11:23:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-21 11:23:00,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-09-21 11:23:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-09-21 11:23:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 434 transitions. [2020-09-21 11:23:00,977 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 434 transitions. Word has length 23 [2020-09-21 11:23:00,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:00,977 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 434 transitions. [2020-09-21 11:23:00,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 434 transitions. [2020-09-21 11:23:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:23:00,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:00,986 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 11:23:00,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:23:00,987 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:00,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1385664132, now seen corresponding path program 1 times [2020-09-21 11:23:00,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:00,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003842296] [2020-09-21 11:23:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,012 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,012 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,012 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:23:01,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:01,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,032 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,032 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,032 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,035 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 11:23:01,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003842296] [2020-09-21 11:23:01,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535476522] [2020-09-21 11:23:01,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,037 INFO L87 Difference]: Start difference. First operand 260 states and 434 transitions. Second operand 3 states. [2020-09-21 11:23:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,058 INFO L93 Difference]: Finished difference Result 476 states and 808 transitions. [2020-09-21 11:23:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 11:23:01,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,062 INFO L225 Difference]: With dead ends: 476 [2020-09-21 11:23:01,062 INFO L226 Difference]: Without dead ends: 474 [2020-09-21 11:23:01,063 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 11:23:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-09-21 11:23:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 360. [2020-09-21 11:23:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-09-21 11:23:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 590 transitions. [2020-09-21 11:23:01,076 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 590 transitions. Word has length 23 [2020-09-21 11:23:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,076 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 590 transitions. [2020-09-21 11:23:01,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 590 transitions. [2020-09-21 11:23:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:23:01,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,078 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 11:23:01,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:23:01,078 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,078 INFO L82 PathProgramCache]: Analyzing trace with hash 798858118, now seen corresponding path program 1 times [2020-09-21 11:23:01,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267326632] [2020-09-21 11:23:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,090 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:23:01,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,108 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,108 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,108 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,109 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,112 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 11:23:01,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267326632] [2020-09-21 11:23:01,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612556874] [2020-09-21 11:23:01,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,114 INFO L87 Difference]: Start difference. First operand 360 states and 590 transitions. Second operand 3 states. [2020-09-21 11:23:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,142 INFO L93 Difference]: Finished difference Result 844 states and 1392 transitions. [2020-09-21 11:23:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 11:23:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,146 INFO L225 Difference]: With dead ends: 844 [2020-09-21 11:23:01,147 INFO L226 Difference]: Without dead ends: 498 [2020-09-21 11:23:01,148 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 11:23:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-09-21 11:23:01,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2020-09-21 11:23:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-09-21 11:23:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 806 transitions. [2020-09-21 11:23:01,167 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 806 transitions. Word has length 23 [2020-09-21 11:23:01,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,167 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 806 transitions. [2020-09-21 11:23:01,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,167 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 806 transitions. [2020-09-21 11:23:01,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:23:01,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,169 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 11:23:01,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:23:01,169 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,170 INFO L82 PathProgramCache]: Analyzing trace with hash 6129535, now seen corresponding path program 1 times [2020-09-21 11:23:01,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529068951] [2020-09-21 11:23:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,182 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,183 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,183 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,183 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:23:01,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:01,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,208 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 11:23:01,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529068951] [2020-09-21 11:23:01,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027144070] [2020-09-21 11:23:01,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,211 INFO L87 Difference]: Start difference. First operand 496 states and 806 transitions. Second operand 3 states. [2020-09-21 11:23:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,233 INFO L93 Difference]: Finished difference Result 744 states and 1204 transitions. [2020-09-21 11:23:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 11:23:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,236 INFO L225 Difference]: With dead ends: 744 [2020-09-21 11:23:01,237 INFO L226 Difference]: Without dead ends: 506 [2020-09-21 11:23:01,238 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 11:23:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-21 11:23:01,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 504. [2020-09-21 11:23:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-09-21 11:23:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 806 transitions. [2020-09-21 11:23:01,256 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 806 transitions. Word has length 24 [2020-09-21 11:23:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,257 INFO L479 AbstractCegarLoop]: Abstraction has 504 states and 806 transitions. [2020-09-21 11:23:01,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 806 transitions. [2020-09-21 11:23:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:23:01,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,259 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 11:23:01,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:23:01,259 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1004987715, now seen corresponding path program 1 times [2020-09-21 11:23:01,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129036349] [2020-09-21 11:23:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,282 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,283 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,283 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:23:01,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,304 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,304 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,304 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,304 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,307 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 11:23:01,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129036349] [2020-09-21 11:23:01,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656398393] [2020-09-21 11:23:01,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,310 INFO L87 Difference]: Start difference. First operand 504 states and 806 transitions. Second operand 3 states. [2020-09-21 11:23:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,332 INFO L93 Difference]: Finished difference Result 908 states and 1480 transitions. [2020-09-21 11:23:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 11:23:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,337 INFO L225 Difference]: With dead ends: 908 [2020-09-21 11:23:01,337 INFO L226 Difference]: Without dead ends: 906 [2020-09-21 11:23:01,338 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 11:23:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-09-21 11:23:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 712. [2020-09-21 11:23:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-09-21 11:23:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1110 transitions. [2020-09-21 11:23:01,358 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1110 transitions. Word has length 24 [2020-09-21 11:23:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,358 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1110 transitions. [2020-09-21 11:23:01,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1110 transitions. [2020-09-21 11:23:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:23:01,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,360 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 11:23:01,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:23:01,361 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1591793729, now seen corresponding path program 1 times [2020-09-21 11:23:01,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838508307] [2020-09-21 11:23:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,376 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,376 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,376 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:01,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,394 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,395 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,395 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,395 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,398 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 11:23:01,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838508307] [2020-09-21 11:23:01,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151508029] [2020-09-21 11:23:01,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,400 INFO L87 Difference]: Start difference. First operand 712 states and 1110 transitions. Second operand 3 states. [2020-09-21 11:23:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,429 INFO L93 Difference]: Finished difference Result 1660 states and 2600 transitions. [2020-09-21 11:23:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 11:23:01,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,435 INFO L225 Difference]: With dead ends: 1660 [2020-09-21 11:23:01,435 INFO L226 Difference]: Without dead ends: 970 [2020-09-21 11:23:01,437 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 11:23:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-09-21 11:23:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 968. [2020-09-21 11:23:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-21 11:23:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1494 transitions. [2020-09-21 11:23:01,465 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1494 transitions. Word has length 24 [2020-09-21 11:23:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,466 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1494 transitions. [2020-09-21 11:23:01,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1494 transitions. [2020-09-21 11:23:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:23:01,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,468 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 11:23:01,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:23:01,469 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1089633349, now seen corresponding path program 1 times [2020-09-21 11:23:01,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196018458] [2020-09-21 11:23:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,483 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,483 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:23:01,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:01,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:01,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:01,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,504 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,504 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,505 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:01,509 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 11:23:01,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196018458] [2020-09-21 11:23:01,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033096886] [2020-09-21 11:23:01,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,511 INFO L87 Difference]: Start difference. First operand 968 states and 1494 transitions. Second operand 3 states. [2020-09-21 11:23:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,543 INFO L93 Difference]: Finished difference Result 1452 states and 2232 transitions. [2020-09-21 11:23:01,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 11:23:01,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,550 INFO L225 Difference]: With dead ends: 1452 [2020-09-21 11:23:01,550 INFO L226 Difference]: Without dead ends: 986 [2020-09-21 11:23:01,552 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 11:23:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-09-21 11:23:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2020-09-21 11:23:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2020-09-21 11:23:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1494 transitions. [2020-09-21 11:23:01,587 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1494 transitions. Word has length 25 [2020-09-21 11:23:01,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,589 INFO L479 AbstractCegarLoop]: Abstraction has 984 states and 1494 transitions. [2020-09-21 11:23:01,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1494 transitions. [2020-09-21 11:23:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:23:01,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,592 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 11:23:01,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:23:01,593 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2100750599, now seen corresponding path program 1 times [2020-09-21 11:23:01,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205795143] [2020-09-21 11:23:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:23:01,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:01,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:23:01,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,633 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,633 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,633 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,633 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,638 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 11:23:01,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205795143] [2020-09-21 11:23:01,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643025190] [2020-09-21 11:23:01,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,642 INFO L87 Difference]: Start difference. First operand 984 states and 1494 transitions. Second operand 3 states. [2020-09-21 11:23:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,677 INFO L93 Difference]: Finished difference Result 1740 states and 2696 transitions. [2020-09-21 11:23:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 11:23:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,685 INFO L225 Difference]: With dead ends: 1740 [2020-09-21 11:23:01,686 INFO L226 Difference]: Without dead ends: 1738 [2020-09-21 11:23:01,687 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 11:23:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2020-09-21 11:23:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1416. [2020-09-21 11:23:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1416 states. [2020-09-21 11:23:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2086 transitions. [2020-09-21 11:23:01,733 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2086 transitions. Word has length 25 [2020-09-21 11:23:01,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,734 INFO L479 AbstractCegarLoop]: Abstraction has 1416 states and 2086 transitions. [2020-09-21 11:23:01,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2086 transitions. [2020-09-21 11:23:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 11:23:01,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,737 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 11:23:01,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:23:01,737 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1607410683, now seen corresponding path program 1 times [2020-09-21 11:23:01,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237266837] [2020-09-21 11:23:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,749 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,749 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,750 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,750 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:23:01,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:23:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,770 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,770 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,770 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,771 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:01,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:01,773 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 11:23:01,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237266837] [2020-09-21 11:23:01,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561179355] [2020-09-21 11:23:01,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:01,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:01,775 INFO L87 Difference]: Start difference. First operand 1416 states and 2086 transitions. Second operand 3 states. [2020-09-21 11:23:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:01,825 INFO L93 Difference]: Finished difference Result 3276 states and 4840 transitions. [2020-09-21 11:23:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:01,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 11:23:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:01,835 INFO L225 Difference]: With dead ends: 3276 [2020-09-21 11:23:01,835 INFO L226 Difference]: Without dead ends: 1898 [2020-09-21 11:23:01,838 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 11:23:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2020-09-21 11:23:01,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1896. [2020-09-21 11:23:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-09-21 11:23:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2758 transitions. [2020-09-21 11:23:01,904 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2758 transitions. Word has length 25 [2020-09-21 11:23:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:01,904 INFO L479 AbstractCegarLoop]: Abstraction has 1896 states and 2758 transitions. [2020-09-21 11:23:01,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2758 transitions. [2020-09-21 11:23:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:23:01,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:01,907 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 11:23:01,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 11:23:01,908 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash -698544044, now seen corresponding path program 1 times [2020-09-21 11:23:01,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:01,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157081201] [2020-09-21 11:23:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:01,919 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:01,919 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:01,919 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:01,920 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:01,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:23:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:23:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:01,921 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 11:23:01,945 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: 1 [2020-09-21 11:23:01,948 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 [157081201] [2020-09-21 11:23:01,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:01,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:01,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322924461] [2020-09-21 11:23:01,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:01,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:01,950 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 1896 states and 2758 transitions. Second operand 3 states. [2020-09-21 11:23:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,008 INFO L93 Difference]: Finished difference Result 2844 states and 4120 transitions. [2020-09-21 11:23:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-21 11:23:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,021 INFO L225 Difference]: With dead ends: 2844 [2020-09-21 11:23:02,022 INFO L226 Difference]: Without dead ends: 1930 [2020-09-21 11:23:02,025 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 11:23:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2020-09-21 11:23:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1928. [2020-09-21 11:23:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2020-09-21 11:23:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2758 transitions. [2020-09-21 11:23:02,103 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2758 transitions. Word has length 26 [2020-09-21 11:23:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,103 INFO L479 AbstractCegarLoop]: Abstraction has 1928 states and 2758 transitions. [2020-09-21 11:23:02,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2758 transitions. [2020-09-21 11:23:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:23:02,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,107 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 11:23:02,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 11:23:02,108 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1709661294, now seen corresponding path program 1 times [2020-09-21 11:23:02,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741462654] [2020-09-21 11:23:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,121 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,122 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,122 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,122 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:23:02,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:02,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:23:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,148 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,149 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,149 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,149 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:02,154 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 11:23:02,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741462654] [2020-09-21 11:23:02,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650994914] [2020-09-21 11:23:02,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,156 INFO L87 Difference]: Start difference. First operand 1928 states and 2758 transitions. Second operand 3 states. [2020-09-21 11:23:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,235 INFO L93 Difference]: Finished difference Result 3340 states and 4872 transitions. [2020-09-21 11:23:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-21 11:23:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,257 INFO L225 Difference]: With dead ends: 3340 [2020-09-21 11:23:02,257 INFO L226 Difference]: Without dead ends: 3338 [2020-09-21 11:23:02,259 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 11:23:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-09-21 11:23:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 2824. [2020-09-21 11:23:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2824 states. [2020-09-21 11:23:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 3910 transitions. [2020-09-21 11:23:02,370 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 3910 transitions. Word has length 26 [2020-09-21 11:23:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,370 INFO L479 AbstractCegarLoop]: Abstraction has 2824 states and 3910 transitions. [2020-09-21 11:23:02,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 3910 transitions. [2020-09-21 11:23:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:23:02,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,378 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 11:23:02,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 11:23:02,378 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1998499988, now seen corresponding path program 1 times [2020-09-21 11:23:02,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890337693] [2020-09-21 11:23:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,392 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,392 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:23:02,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:23:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,415 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,415 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,416 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,416 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:02,421 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 11:23:02,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890337693] [2020-09-21 11:23:02,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973245158] [2020-09-21 11:23:02,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,424 INFO L87 Difference]: Start difference. First operand 2824 states and 3910 transitions. Second operand 3 states. [2020-09-21 11:23:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,546 INFO L93 Difference]: Finished difference Result 6476 states and 8968 transitions. [2020-09-21 11:23:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-21 11:23:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,570 INFO L225 Difference]: With dead ends: 6476 [2020-09-21 11:23:02,570 INFO L226 Difference]: Without dead ends: 3722 [2020-09-21 11:23:02,578 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 11:23:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2020-09-21 11:23:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3720. [2020-09-21 11:23:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3720 states. [2020-09-21 11:23:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 5062 transitions. [2020-09-21 11:23:02,737 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 5062 transitions. Word has length 26 [2020-09-21 11:23:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:02,738 INFO L479 AbstractCegarLoop]: Abstraction has 3720 states and 5062 transitions. [2020-09-21 11:23:02,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 5062 transitions. [2020-09-21 11:23:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:23:02,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:02,746 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 11:23:02,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-21 11:23:02,750 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1459677136, now seen corresponding path program 1 times [2020-09-21 11:23:02,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:02,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768278624] [2020-09-21 11:23:02,751 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 11:23:02,772 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,772 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:23:02,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:23:02,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 11:23:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:02,798 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:02,798 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:02,798 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:02,799 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:02,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:02,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:02,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:02,803 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 11:23:02,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768278624] [2020-09-21 11:23:02,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:02,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:02,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453218888] [2020-09-21 11:23:02,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:02,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:02,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:02,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:02,807 INFO L87 Difference]: Start difference. First operand 3720 states and 5062 transitions. Second operand 3 states. [2020-09-21 11:23:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:02,902 INFO L93 Difference]: Finished difference Result 5580 states and 7560 transitions. [2020-09-21 11:23:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:02,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-21 11:23:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:02,921 INFO L225 Difference]: With dead ends: 5580 [2020-09-21 11:23:02,921 INFO L226 Difference]: Without dead ends: 3786 [2020-09-21 11:23:02,928 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 11:23:02,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2020-09-21 11:23:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3784. [2020-09-21 11:23:03,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2020-09-21 11:23:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5062 transitions. [2020-09-21 11:23:03,045 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5062 transitions. Word has length 27 [2020-09-21 11:23:03,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,045 INFO L479 AbstractCegarLoop]: Abstraction has 3784 states and 5062 transitions. [2020-09-21 11:23:03,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5062 transitions. [2020-09-21 11:23:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:23:03,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,051 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 11:23:03,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-21 11:23:03,052 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1824172910, now seen corresponding path program 1 times [2020-09-21 11:23:03,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303107442] [2020-09-21 11:23:03,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,065 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,065 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,065 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:23:03,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:23:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,095 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,095 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,096 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,096 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,099 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 11:23:03,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303107442] [2020-09-21 11:23:03,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781324929] [2020-09-21 11:23:03,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,103 INFO L87 Difference]: Start difference. First operand 3784 states and 5062 transitions. Second operand 3 states. [2020-09-21 11:23:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,257 INFO L93 Difference]: Finished difference Result 10956 states and 14408 transitions. [2020-09-21 11:23:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-21 11:23:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,286 INFO L225 Difference]: With dead ends: 10956 [2020-09-21 11:23:03,287 INFO L226 Difference]: Without dead ends: 7306 [2020-09-21 11:23:03,294 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 11:23:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7306 states. [2020-09-21 11:23:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7306 to 7304. [2020-09-21 11:23:03,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7304 states. [2020-09-21 11:23:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 9350 transitions. [2020-09-21 11:23:03,539 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 9350 transitions. Word has length 27 [2020-09-21 11:23:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:03,540 INFO L479 AbstractCegarLoop]: Abstraction has 7304 states and 9350 transitions. [2020-09-21 11:23:03,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:03,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 9350 transitions. [2020-09-21 11:23:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:23:03,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:03,554 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 11:23:03,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-21 11:23:03,554 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1883988372, now seen corresponding path program 1 times [2020-09-21 11:23:03,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:03,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912046556] [2020-09-21 11:23:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,569 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,569 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,569 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:23:03,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:03,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:23:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:03,598 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:03,598 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:03,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:03,602 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 11:23:03,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912046556] [2020-09-21 11:23:03,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:03,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:03,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626109205] [2020-09-21 11:23:03,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:03,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:03,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:03,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:03,604 INFO L87 Difference]: Start difference. First operand 7304 states and 9350 transitions. Second operand 3 states. [2020-09-21 11:23:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:03,787 INFO L93 Difference]: Finished difference Result 8076 states and 10632 transitions. [2020-09-21 11:23:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:03,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-21 11:23:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:03,805 INFO L225 Difference]: With dead ends: 8076 [2020-09-21 11:23:03,805 INFO L226 Difference]: Without dead ends: 8074 [2020-09-21 11:23:03,809 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 11:23:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2020-09-21 11:23:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 7304. [2020-09-21 11:23:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7304 states. [2020-09-21 11:23:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 9222 transitions. [2020-09-21 11:23:04,092 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 9222 transitions. Word has length 27 [2020-09-21 11:23:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:04,092 INFO L479 AbstractCegarLoop]: Abstraction has 7304 states and 9222 transitions. [2020-09-21 11:23:04,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 9222 transitions. [2020-09-21 11:23:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:23:04,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:04,103 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 11:23:04,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-21 11:23:04,104 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash 715001129, now seen corresponding path program 1 times [2020-09-21 11:23:04,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:04,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108459103] [2020-09-21 11:23:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,115 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,115 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,116 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,116 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:23:04,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:23:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,150 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,150 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,150 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:04,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:04,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,154 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 11:23:04,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108459103] [2020-09-21 11:23:04,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:04,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:04,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608621542] [2020-09-21 11:23:04,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:04,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:04,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:04,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:04,156 INFO L87 Difference]: Start difference. First operand 7304 states and 9222 transitions. Second operand 3 states. [2020-09-21 11:23:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:04,327 INFO L93 Difference]: Finished difference Result 12172 states and 15496 transitions. [2020-09-21 11:23:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:04,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-21 11:23:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:04,351 INFO L225 Difference]: With dead ends: 12172 [2020-09-21 11:23:04,351 INFO L226 Difference]: Without dead ends: 12170 [2020-09-21 11:23:04,356 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 11:23:04,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2020-09-21 11:23:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 11144. [2020-09-21 11:23:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11144 states. [2020-09-21 11:23:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 13702 transitions. [2020-09-21 11:23:04,690 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 13702 transitions. Word has length 28 [2020-09-21 11:23:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:04,690 INFO L479 AbstractCegarLoop]: Abstraction has 11144 states and 13702 transitions. [2020-09-21 11:23:04,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 13702 transitions. [2020-09-21 11:23:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:23:04,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:04,714 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 11:23:04,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-21 11:23:04,714 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:04,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash 128195115, now seen corresponding path program 1 times [2020-09-21 11:23:04,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:04,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748405546] [2020-09-21 11:23:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,726 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,727 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,727 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,727 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:23:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:23:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:04,743 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:04,743 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:04,744 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:04,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:04,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:04,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:04,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:04,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:04,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:04,747 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 11:23:04,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748405546] [2020-09-21 11:23:04,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:04,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:04,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608927915] [2020-09-21 11:23:04,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:04,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:04,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:04,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:04,749 INFO L87 Difference]: Start difference. First operand 11144 states and 13702 transitions. Second operand 3 states. [2020-09-21 11:23:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:04,971 INFO L93 Difference]: Finished difference Result 25228 states and 30856 transitions. [2020-09-21 11:23:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:04,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-21 11:23:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,001 INFO L225 Difference]: With dead ends: 25228 [2020-09-21 11:23:05,002 INFO L226 Difference]: Without dead ends: 14218 [2020-09-21 11:23:05,024 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 11:23:05,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14218 states. [2020-09-21 11:23:05,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 14216. [2020-09-21 11:23:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14216 states. [2020-09-21 11:23:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14216 states to 14216 states and 16902 transitions. [2020-09-21 11:23:05,457 INFO L78 Accepts]: Start accepts. Automaton has 14216 states and 16902 transitions. Word has length 28 [2020-09-21 11:23:05,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,458 INFO L479 AbstractCegarLoop]: Abstraction has 14216 states and 16902 transitions. [2020-09-21 11:23:05,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 14216 states and 16902 transitions. [2020-09-21 11:23:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:23:05,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,476 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 11:23:05,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-21 11:23:05,476 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,477 INFO L82 PathProgramCache]: Analyzing trace with hash 690414627, now seen corresponding path program 1 times [2020-09-21 11:23:05,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808440988] [2020-09-21 11:23:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,487 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,488 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,488 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:23:05,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:23:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,508 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,508 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,508 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,511 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 11:23:05,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808440988] [2020-09-21 11:23:05,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820890584] [2020-09-21 11:23:05,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,513 INFO L87 Difference]: Start difference. First operand 14216 states and 16902 transitions. Second operand 3 states. [2020-09-21 11:23:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,681 INFO L93 Difference]: Finished difference Result 21516 states and 25608 transitions. [2020-09-21 11:23:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-21 11:23:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,708 INFO L225 Difference]: With dead ends: 21516 [2020-09-21 11:23:05,708 INFO L226 Difference]: Without dead ends: 14602 [2020-09-21 11:23:05,724 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 11:23:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14602 states. [2020-09-21 11:23:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14602 to 14600. [2020-09-21 11:23:06,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14600 states. [2020-09-21 11:23:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14600 states to 14600 states and 17158 transitions. [2020-09-21 11:23:06,488 INFO L78 Accepts]: Start accepts. Automaton has 14600 states and 17158 transitions. Word has length 29 [2020-09-21 11:23:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,488 INFO L479 AbstractCegarLoop]: Abstraction has 14600 states and 17158 transitions. [2020-09-21 11:23:06,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 14600 states and 17158 transitions. [2020-09-21 11:23:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:23:06,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,507 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, 1, 1] [2020-09-21 11:23:06,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-21 11:23:06,507 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,508 INFO L82 PathProgramCache]: Analyzing trace with hash -320702623, now seen corresponding path program 1 times [2020-09-21 11:23:06,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515082104] [2020-09-21 11:23:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,519 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,520 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,520 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,520 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:23:06,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:23:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,538 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,539 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,539 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,542 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 11:23:06,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515082104] [2020-09-21 11:23:06,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041160745] [2020-09-21 11:23:06,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,544 INFO L87 Difference]: Start difference. First operand 14600 states and 17158 transitions. Second operand 3 states. [2020-09-21 11:23:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,900 INFO L93 Difference]: Finished difference Result 23562 states and 27399 transitions. [2020-09-21 11:23:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-21 11:23:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,952 INFO L225 Difference]: With dead ends: 23562 [2020-09-21 11:23:06,952 INFO L226 Difference]: Without dead ends: 23560 [2020-09-21 11:23:06,962 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 11:23:06,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23560 states. [2020-09-21 11:23:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23560 to 22536. [2020-09-21 11:23:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22536 states. [2020-09-21 11:23:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22536 states to 22536 states and 25862 transitions. [2020-09-21 11:23:07,454 INFO L78 Accepts]: Start accepts. Automaton has 22536 states and 25862 transitions. Word has length 29 [2020-09-21 11:23:07,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:07,454 INFO L479 AbstractCegarLoop]: Abstraction has 22536 states and 25862 transitions. [2020-09-21 11:23:07,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand 22536 states and 25862 transitions. [2020-09-21 11:23:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:23:07,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:07,490 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 11:23:07,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-21 11:23:07,490 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:07,490 INFO L82 PathProgramCache]: Analyzing trace with hash -907508637, now seen corresponding path program 1 times [2020-09-21 11:23:07,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:07,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543887125] [2020-09-21 11:23:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:07,508 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:07,508 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:07,508 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:07,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:07,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 11:23:07,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:23:07,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 11:23:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:23:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:07,529 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:07,530 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:07,530 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:07,530 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:07,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:07,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:07,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:07,533 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 11:23:07,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543887125] [2020-09-21 11:23:07,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:07,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:07,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194276084] [2020-09-21 11:23:07,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:07,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:07,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:07,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:07,535 INFO L87 Difference]: Start difference. First operand 22536 states and 25862 transitions. Second operand 3 states. [2020-09-21 11:23:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:07,862 INFO L93 Difference]: Finished difference Result 50184 states and 56582 transitions. [2020-09-21 11:23:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:07,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-21 11:23:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:07,863 INFO L225 Difference]: With dead ends: 50184 [2020-09-21 11:23:07,863 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:23:07,942 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 11:23:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:23:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:23:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:23:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:23:07,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-21 11:23:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:07,944 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:23:07,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:23:07,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:23:07,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-21 11:23:07,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:23:08,102 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:23:08,102 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:23:08,102 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:23:08,102 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:23:08,102 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:23:08,102 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:23:08,103 INFO L271 CegarLoopResult]: At program point L159(lines 5 163) the Hoare annotation is: true [2020-09-21 11:23:08,103 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 163) no Hoare annotation was computed. [2020-09-21 11:23:08,103 INFO L268 CegarLoopResult]: For program point L118-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,103 INFO L268 CegarLoopResult]: For program point L143-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,103 INFO L268 CegarLoopResult]: For program point L102-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,105 INFO L268 CegarLoopResult]: For program point L94-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,105 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-09-21 11:23:08,106 INFO L268 CegarLoopResult]: For program point L86-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,106 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-21 11:23:08,106 INFO L268 CegarLoopResult]: For program point L78-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,106 INFO L268 CegarLoopResult]: For program point L70-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,106 INFO L268 CegarLoopResult]: For program point L128-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,106 INFO L271 CegarLoopResult]: At program point L153-1(lines 39 158) the Hoare annotation is: true [2020-09-21 11:23:08,107 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 163) no Hoare annotation was computed. [2020-09-21 11:23:08,107 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-09-21 11:23:08,107 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2020-09-21 11:23:08,107 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 163) the Hoare annotation is: true [2020-09-21 11:23:08,108 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-21 11:23:08,108 INFO L264 CegarLoopResult]: At program point L154-1(lines 5 163) the Hoare annotation is: false [2020-09-21 11:23:08,108 INFO L268 CegarLoopResult]: For program point L113-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,108 INFO L268 CegarLoopResult]: For program point L138-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,108 INFO L268 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-09-21 11:23:08,108 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-21 11:23:08,109 INFO L268 CegarLoopResult]: For program point L98-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,109 INFO L268 CegarLoopResult]: For program point L123-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,109 INFO L268 CegarLoopResult]: For program point L90-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,109 INFO L268 CegarLoopResult]: For program point L148-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,109 INFO L268 CegarLoopResult]: For program point L82-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,110 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-21 11:23:08,110 INFO L268 CegarLoopResult]: For program point L74-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,110 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-09-21 11:23:08,110 INFO L268 CegarLoopResult]: For program point L66-2(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,110 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-09-21 11:23:08,110 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-21 11:23:08,111 INFO L268 CegarLoopResult]: For program point L108-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,111 INFO L268 CegarLoopResult]: For program point L133-1(lines 39 158) no Hoare annotation was computed. [2020-09-21 11:23:08,111 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-09-21 11:23:08,111 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-21 11:23:08,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:23:08 BoogieIcfgContainer [2020-09-21 11:23:08,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:23:08,148 INFO L168 Benchmark]: Toolchain (without parser) took 9818.90 ms. Allocated memory was 141.0 MB in the beginning and 599.3 MB in the end (delta: 458.2 MB). Free memory was 103.2 MB in the beginning and 483.5 MB in the end (delta: -380.3 MB). Peak memory consumption was 440.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:08,151 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:23:08,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.34 ms. Allocated memory is still 141.0 MB. Free memory was 102.6 MB in the beginning and 92.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:08,159 INFO L168 Benchmark]: Boogie Preprocessor took 130.90 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 181.6 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:08,160 INFO L168 Benchmark]: RCFGBuilder took 404.18 ms. Allocated memory is still 203.9 MB. Free memory was 181.6 MB in the beginning and 161.8 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:08,161 INFO L168 Benchmark]: TraceAbstraction took 8916.65 ms. Allocated memory was 203.9 MB in the beginning and 599.3 MB in the end (delta: 395.3 MB). Free memory was 161.8 MB in the beginning and 483.5 MB in the end (delta: -321.7 MB). Peak memory consumption was 436.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:08,163 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 356.34 ms. Allocated memory is still 141.0 MB. Free memory was 102.6 MB in the beginning and 92.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.90 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 181.6 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.18 ms. Allocated memory is still 203.9 MB. Free memory was 181.6 MB in the beginning and 161.8 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8916.65 ms. Allocated memory was 203.9 MB in the beginning and 599.3 MB in the end (delta: 395.3 MB). Free memory was 161.8 MB in the beginning and 483.5 MB in the end (delta: -321.7 MB). Peak memory consumption was 436.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 161]: 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: 39]: 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, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.6s, OverallIterations: 28, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2384 SDtfs, 1153 SDslu, 1624 SDs, 0 SdLazy, 149 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22536occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 28 MinimizatonAttempts, 4124 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 1034 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 687 NumberOfCodeBlocks, 687 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 31265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 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...