/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:21:57,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:21:57,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:21:57,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:21:57,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:21:57,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:21:57,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:21:57,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:21:57,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:21:57,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:21:57,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:21:57,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:21:57,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:21:57,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:21:57,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:21:57,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:21:57,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:21:57,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:21:57,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:21:57,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:21:57,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:21:57,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:21:57,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:21:57,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:21:57,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 05:21:57,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:21:57,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:21:57,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:21:57,093 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 [2020-08-19 05:21:57,115 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:21:57,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:21:57,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:21:57,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:21:57,116 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:21:57,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:21:57,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:21:57,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:21:57,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:21:57,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:21:57,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:21:57,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:21:57,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:21:57,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:21:57,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:21:57,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:21:57,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:21:57,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:21:57,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:21:57,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:21:57,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:21:57,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:21:57,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:21:57,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:21:57,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:21:57,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:21:57,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:21:57,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:21:57,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:21:57,121 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 -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:21:57,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:21:57,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:21:57,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:21:57,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:21:57,434 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:21:57,435 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-19 05:21:57,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a60a71119/c45f5d3636234a66ab3c933c8fe469c1/FLAG851b9131d [2020-08-19 05:21:58,046 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:21:58,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-19 05:21:58,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a60a71119/c45f5d3636234a66ab3c933c8fe469c1/FLAG851b9131d [2020-08-19 05:21:58,276 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a60a71119/c45f5d3636234a66ab3c933c8fe469c1 [2020-08-19 05:21:58,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:21:58,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:21:58,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:21:58,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:21:58,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:21:58,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:21:58" (1/1) ... [2020-08-19 05:21:58,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697fd79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:58, skipping insertion in model container [2020-08-19 05:21:58,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:21:58" (1/1) ... [2020-08-19 05:21:58,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:21:58,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:21:59,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:21:59,136 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:21:59,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:21:59,657 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:21:59,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59 WrapperNode [2020-08-19 05:21:59,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:21:59,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:21:59,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:21:59,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:21:59,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (1/1) ... [2020-08-19 05:21:59,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (1/1) ... [2020-08-19 05:21:59,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (1/1) ... [2020-08-19 05:21:59,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (1/1) ... [2020-08-19 05:21:59,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (1/1) ... [2020-08-19 05:21:59,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (1/1) ... [2020-08-19 05:21:59,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (1/1) ... [2020-08-19 05:21:59,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:21:59,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:21:59,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:21:59,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:21:59,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (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 [2020-08-19 05:21:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:21:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:21:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 05:21:59,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:21:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:21:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 05:21:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 05:21:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-19 05:21:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 05:21:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 05:21:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-19 05:21:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-19 05:21:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-19 05:21:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-19 05:21:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-19 05:21:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 05:21:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 05:21:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:21:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:21:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:22:01,483 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:22:01,484 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 05:22:01,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:22:01 BoogieIcfgContainer [2020-08-19 05:22:01,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:22:01,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:22:01,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:22:01,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:22:01,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:21:58" (1/3) ... [2020-08-19 05:22:01,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49abe012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:22:01, skipping insertion in model container [2020-08-19 05:22:01,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:21:59" (2/3) ... [2020-08-19 05:22:01,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49abe012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:22:01, skipping insertion in model container [2020-08-19 05:22:01,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:22:01" (3/3) ... [2020-08-19 05:22:01,502 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-19 05:22:01,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:22:01,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-19 05:22:01,540 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-19 05:22:01,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:22:01,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:22:01,572 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:22:01,572 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:22:01,572 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:22:01,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:22:01,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:22:01,573 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:22:01,605 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-19 05:22:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 05:22:01,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:01,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:01,626 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-19 05:22:01,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:01,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097496854] [2020-08-19 05:22:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:02,613 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:02,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097496854] [2020-08-19 05:22:02,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:02,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:22:02,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508430688] [2020-08-19 05:22:02,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:22:02,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:02,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:22:02,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:02,747 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-19 05:22:03,057 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-19 05:22:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:05,839 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-19 05:22:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:22:05,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-19 05:22:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:05,878 INFO L225 Difference]: With dead ends: 754 [2020-08-19 05:22:05,878 INFO L226 Difference]: Without dead ends: 593 [2020-08-19 05:22:05,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-19 05:22:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-19 05:22:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-19 05:22:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-19 05:22:05,980 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-19 05:22:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:05,981 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-19 05:22:05,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:22:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-19 05:22:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 05:22:05,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:05,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:05,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:22:05,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:05,992 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-19 05:22:05,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:05,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160997303] [2020-08-19 05:22:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:06,501 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:06,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160997303] [2020-08-19 05:22:06,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:06,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:22:06,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465425587] [2020-08-19 05:22:06,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:22:06,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:06,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:22:06,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:06,552 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-19 05:22:06,868 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-19 05:22:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:08,980 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-19 05:22:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:22:08,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-19 05:22:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:08,990 INFO L225 Difference]: With dead ends: 1190 [2020-08-19 05:22:08,990 INFO L226 Difference]: Without dead ends: 961 [2020-08-19 05:22:08,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:08,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-19 05:22:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-19 05:22:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-19 05:22:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-19 05:22:09,074 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-19 05:22:09,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:09,075 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-19 05:22:09,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:22:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-19 05:22:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 05:22:09,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:09,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:09,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:22:09,079 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:09,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-19 05:22:09,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:09,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80762523] [2020-08-19 05:22:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:09,518 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:09,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:09,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80762523] [2020-08-19 05:22:09,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:09,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:22:09,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686543019] [2020-08-19 05:22:09,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:22:09,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:09,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:22:09,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:09,592 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-19 05:22:09,973 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-19 05:22:12,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:12,346 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-19 05:22:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:22:12,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-19 05:22:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:12,359 INFO L225 Difference]: With dead ends: 2090 [2020-08-19 05:22:12,359 INFO L226 Difference]: Without dead ends: 1701 [2020-08-19 05:22:12,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-19 05:22:12,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-19 05:22:12,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-19 05:22:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-19 05:22:12,434 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-19 05:22:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:12,435 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-19 05:22:12,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:22:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-19 05:22:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 05:22:12,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:12,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:12,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:22:12,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:12,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-19 05:22:12,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:12,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995855097] [2020-08-19 05:22:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:12,940 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:12,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:13,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995855097] [2020-08-19 05:22:13,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:13,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:22:13,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142568826] [2020-08-19 05:22:13,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:22:13,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:13,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:22:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:13,038 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-19 05:22:16,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:16,813 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-19 05:22:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:22:16,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-19 05:22:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:16,834 INFO L225 Difference]: With dead ends: 4967 [2020-08-19 05:22:16,834 INFO L226 Difference]: Without dead ends: 3281 [2020-08-19 05:22:16,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:22:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-19 05:22:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-19 05:22:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-19 05:22:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-19 05:22:17,009 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-19 05:22:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:17,010 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-19 05:22:17,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:22:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-19 05:22:17,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 05:22:17,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:17,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:17,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:22:17,020 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:17,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-19 05:22:17,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:17,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645768331] [2020-08-19 05:22:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:17,359 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:17,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645768331] [2020-08-19 05:22:17,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:17,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:22:17,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320538412] [2020-08-19 05:22:17,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:22:17,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:17,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:22:17,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:17,396 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-19 05:22:19,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:19,754 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-19 05:22:19,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:22:19,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-19 05:22:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:19,789 INFO L225 Difference]: With dead ends: 9659 [2020-08-19 05:22:19,789 INFO L226 Difference]: Without dead ends: 6456 [2020-08-19 05:22:19,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-19 05:22:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-19 05:22:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-19 05:22:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-19 05:22:19,991 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-19 05:22:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:19,992 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-19 05:22:19,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:22:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-19 05:22:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-19 05:22:19,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:19,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:19,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:22:19,999 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:19,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:20,000 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-19 05:22:20,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:20,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841070895] [2020-08-19 05:22:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:20,477 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:20,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:20,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841070895] [2020-08-19 05:22:20,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:20,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:22:20,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517853908] [2020-08-19 05:22:20,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:22:20,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:20,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:22:20,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:20,588 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-19 05:22:23,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:23,693 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-19 05:22:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:22:23,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-19 05:22:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:23,727 INFO L225 Difference]: With dead ends: 9441 [2020-08-19 05:22:23,727 INFO L226 Difference]: Without dead ends: 6238 [2020-08-19 05:22:23,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:22:23,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-19 05:22:24,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-19 05:22:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-19 05:22:24,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-19 05:22:24,032 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-19 05:22:24,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:24,032 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-19 05:22:24,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:22:24,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-19 05:22:24,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 05:22:24,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:24,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:24,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:22:24,046 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:24,047 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-19 05:22:24,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:24,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174550924] [2020-08-19 05:22:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:24,372 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:24,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:24,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174550924] [2020-08-19 05:22:24,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:24,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:22:24,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832636835] [2020-08-19 05:22:24,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:22:24,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:22:24,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:24,435 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-19 05:22:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:27,911 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-19 05:22:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:22:27,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-19 05:22:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:27,955 INFO L225 Difference]: With dead ends: 18492 [2020-08-19 05:22:27,955 INFO L226 Difference]: Without dead ends: 12348 [2020-08-19 05:22:27,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-19 05:22:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-19 05:22:28,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-19 05:22:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-19 05:22:28,309 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-19 05:22:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:28,309 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-19 05:22:28,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:22:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-19 05:22:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 05:22:28,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:28,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:28,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:22:28,322 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:28,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-19 05:22:28,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:28,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757131452] [2020-08-19 05:22:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:28,639 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:28,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757131452] [2020-08-19 05:22:28,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:28,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:22:28,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285200876] [2020-08-19 05:22:28,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:22:28,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:28,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:22:28,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:28,696 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-19 05:22:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:31,923 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-19 05:22:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:22:31,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-19 05:22:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:31,953 INFO L225 Difference]: With dead ends: 16495 [2020-08-19 05:22:31,953 INFO L226 Difference]: Without dead ends: 10615 [2020-08-19 05:22:31,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:31,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-19 05:22:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-19 05:22:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-19 05:22:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-19 05:22:32,541 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-19 05:22:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:32,542 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-19 05:22:32,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:22:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-19 05:22:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 05:22:32,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:32,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:32,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:22:32,562 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:32,562 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-19 05:22:32,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:32,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951175172] [2020-08-19 05:22:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:32,921 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:32,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951175172] [2020-08-19 05:22:32,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:32,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:22:32,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104767312] [2020-08-19 05:22:32,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:22:32,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:32,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:22:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:32,960 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-19 05:22:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:35,308 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-19 05:22:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:22:35,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-19 05:22:35,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:35,336 INFO L225 Difference]: With dead ends: 21564 [2020-08-19 05:22:35,336 INFO L226 Difference]: Without dead ends: 10851 [2020-08-19 05:22:35,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:22:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-19 05:22:35,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-19 05:22:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-19 05:22:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-19 05:22:35,848 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-19 05:22:35,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:35,848 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-19 05:22:35,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:22:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-19 05:22:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 05:22:35,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:35,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:35,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:22:35,863 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:35,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-19 05:22:35,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:35,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256173922] [2020-08-19 05:22:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:36,777 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:36,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256173922] [2020-08-19 05:22:36,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:36,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:22:36,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16063684] [2020-08-19 05:22:36,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:22:36,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:36,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:22:36,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:36,828 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-19 05:22:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:40,043 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-19 05:22:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:22:40,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-19 05:22:40,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:40,062 INFO L225 Difference]: With dead ends: 15230 [2020-08-19 05:22:40,062 INFO L226 Difference]: Without dead ends: 10851 [2020-08-19 05:22:40,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:22:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-19 05:22:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-19 05:22:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-19 05:22:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-19 05:22:40,531 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-19 05:22:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:40,531 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-19 05:22:40,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:22:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-19 05:22:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 05:22:40,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:40,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:40,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:22:40,546 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:40,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:40,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-19 05:22:40,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:40,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27703109] [2020-08-19 05:22:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:40,865 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:40,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27703109] [2020-08-19 05:22:40,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:40,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:22:40,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813467757] [2020-08-19 05:22:40,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:22:40,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:40,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:22:40,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:40,925 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-19 05:22:44,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:44,884 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-19 05:22:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:22:44,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-19 05:22:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:44,910 INFO L225 Difference]: With dead ends: 25409 [2020-08-19 05:22:44,910 INFO L226 Difference]: Without dead ends: 21030 [2020-08-19 05:22:44,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:22:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-19 05:22:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-19 05:22:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-19 05:22:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-19 05:22:45,432 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-19 05:22:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:45,433 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-19 05:22:45,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:22:45,433 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-19 05:22:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 05:22:45,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:45,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:45,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:22:45,445 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-19 05:22:45,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:45,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778558246] [2020-08-19 05:22:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:45,821 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:45,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:45,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778558246] [2020-08-19 05:22:45,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:45,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:22:45,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893435318] [2020-08-19 05:22:45,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:22:45,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:45,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:22:45,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:45,872 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-19 05:22:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:22:49,325 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-19 05:22:49,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:22:49,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-19 05:22:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:22:49,349 INFO L225 Difference]: With dead ends: 30843 [2020-08-19 05:22:49,349 INFO L226 Difference]: Without dead ends: 20313 [2020-08-19 05:22:49,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:22:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-19 05:22:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-19 05:22:50,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-19 05:22:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-19 05:22:50,162 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-19 05:22:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:22:50,162 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-19 05:22:50,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:22:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-19 05:22:50,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 05:22:50,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:22:50,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:22:50,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:22:50,181 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:22:50,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:22:50,181 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-19 05:22:50,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:22:50,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871861256] [2020-08-19 05:22:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:22:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:50,621 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-19 05:22:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:22:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:22:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:22:50,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871861256] [2020-08-19 05:22:50,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:22:50,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:22:50,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739115756] [2020-08-19 05:22:50,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:22:50,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:22:50,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:22:50,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:22:50,679 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states.