/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:10:15,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:10:15,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:10:15,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:10:15,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:10:15,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:10:15,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:10:15,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:10:15,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:10:15,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:10:15,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:10:15,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:10:15,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:10:15,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:10:15,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:10:15,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:10:15,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:10:15,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:10:15,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:10:15,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:10:15,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:10:15,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:10:15,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:10:15,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:10:15,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:10:15,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:10:15,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:10:15,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:10:15,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:10:15,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:10:15,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:10:15,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:10:15,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:10:15,970 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:10:15,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:10:15,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:10:15,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:10:15,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:10:15,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:10:15,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:10:15,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:10:15,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:10:15,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:10:15,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:10:15,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:10:15,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:10:15,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:10:15,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:10:15,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:10:15,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:10:15,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:10:15,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:10:15,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:10:15,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:10:15,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:10:16,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:10:16,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:10:16,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:10:16,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:10:16,441 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:10:16,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2020-12-22 10:10:16,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b2f92b3/86e6abb52eb247ca87d1fd704aab482e/FLAG4a3908d89 [2020-12-22 10:10:17,606 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:10:17,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2020-12-22 10:10:17,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b2f92b3/86e6abb52eb247ca87d1fd704aab482e/FLAG4a3908d89 [2020-12-22 10:10:18,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4b2f92b3/86e6abb52eb247ca87d1fd704aab482e [2020-12-22 10:10:18,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:10:18,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:10:18,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:10:18,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:10:18,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:10:18,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:10:18" (1/1) ... [2020-12-22 10:10:18,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eaa3684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:18, skipping insertion in model container [2020-12-22 10:10:18,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:10:18" (1/1) ... [2020-12-22 10:10:18,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:10:18,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:10:18,722 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[20581,20594] [2020-12-22 10:10:18,770 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[25893,25906] [2020-12-22 10:10:19,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:10:19,617 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:10:19,663 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[20581,20594] [2020-12-22 10:10:19,676 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[25893,25906] [2020-12-22 10:10:20,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:10:20,250 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:10:20,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20 WrapperNode [2020-12-22 10:10:20,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:10:20,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:10:20,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:10:20,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:10:20,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:20,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:20,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:10:20,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:10:20,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:10:20,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:10:20,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:20,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:20,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:20,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:21,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:21,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:21,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... [2020-12-22 10:10:21,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:10:21,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:10:21,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:10:21,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:10:21,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 10:10:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:10:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:10:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:10:21,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:10:26,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:10:26,398 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2020-12-22 10:10:26,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:10:26 BoogieIcfgContainer [2020-12-22 10:10:26,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:10:26,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:10:26,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:10:26,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:10:26,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:10:18" (1/3) ... [2020-12-22 10:10:26,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f5b442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:10:26, skipping insertion in model container [2020-12-22 10:10:26,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:10:20" (2/3) ... [2020-12-22 10:10:26,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f5b442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:10:26, skipping insertion in model container [2020-12-22 10:10:26,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:10:26" (3/3) ... [2020-12-22 10:10:26,410 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2020-12-22 10:10:26,417 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:10:26,423 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:10:26,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:10:26,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:10:26,475 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:10:26,475 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:10:26,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:10:26,476 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:10:26,476 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:10:26,476 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:10:26,476 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:10:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states. [2020-12-22 10:10:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 10:10:26,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:26,525 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] [2020-12-22 10:10:26,526 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:26,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:26,533 INFO L82 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2020-12-22 10:10:26,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:26,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518957319] [2020-12-22 10:10:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:26,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518957319] [2020-12-22 10:10:26,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:26,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:10:26,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642028594] [2020-12-22 10:10:26,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:10:26,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:10:26,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:10:26,826 INFO L87 Difference]: Start difference. First operand 944 states. Second operand 2 states. [2020-12-22 10:10:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:26,923 INFO L93 Difference]: Finished difference Result 1832 states and 3464 transitions. [2020-12-22 10:10:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:10:26,925 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-12-22 10:10:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:26,967 INFO L225 Difference]: With dead ends: 1832 [2020-12-22 10:10:26,967 INFO L226 Difference]: Without dead ends: 878 [2020-12-22 10:10:26,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:10:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-12-22 10:10:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-12-22 10:10:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-12-22 10:10:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1653 transitions. [2020-12-22 10:10:27,097 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1653 transitions. Word has length 42 [2020-12-22 10:10:27,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:27,098 INFO L481 AbstractCegarLoop]: Abstraction has 878 states and 1653 transitions. [2020-12-22 10:10:27,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:10:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1653 transitions. [2020-12-22 10:10:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 10:10:27,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:27,106 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] [2020-12-22 10:10:27,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:10:27,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:27,108 INFO L82 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2020-12-22 10:10:27,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:27,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153268110] [2020-12-22 10:10:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:27,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153268110] [2020-12-22 10:10:27,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:27,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:10:27,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882906287] [2020-12-22 10:10:27,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:10:27,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:27,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:10:27,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:10:27,261 INFO L87 Difference]: Start difference. First operand 878 states and 1653 transitions. Second operand 5 states. [2020-12-22 10:10:27,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:27,405 INFO L93 Difference]: Finished difference Result 950 states and 1765 transitions. [2020-12-22 10:10:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:10:27,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 10:10:27,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:27,411 INFO L225 Difference]: With dead ends: 950 [2020-12-22 10:10:27,411 INFO L226 Difference]: Without dead ends: 878 [2020-12-22 10:10:27,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:10:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-12-22 10:10:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-12-22 10:10:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-12-22 10:10:27,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1603 transitions. [2020-12-22 10:10:27,432 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1603 transitions. Word has length 42 [2020-12-22 10:10:27,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:27,433 INFO L481 AbstractCegarLoop]: Abstraction has 878 states and 1603 transitions. [2020-12-22 10:10:27,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:10:27,433 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1603 transitions. [2020-12-22 10:10:27,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 10:10:27,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:27,435 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] [2020-12-22 10:10:27,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:10:27,435 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:27,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:27,436 INFO L82 PathProgramCache]: Analyzing trace with hash -364915275, now seen corresponding path program 1 times [2020-12-22 10:10:27,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:27,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424495031] [2020-12-22 10:10:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:27,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424495031] [2020-12-22 10:10:27,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:27,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:27,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706229308] [2020-12-22 10:10:27,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:10:27,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:27,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:10:27,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:10:27,580 INFO L87 Difference]: Start difference. First operand 878 states and 1603 transitions. Second operand 4 states. [2020-12-22 10:10:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:37,077 INFO L93 Difference]: Finished difference Result 3133 states and 5912 transitions. [2020-12-22 10:10:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:10:37,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 10:10:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:37,095 INFO L225 Difference]: With dead ends: 3133 [2020-12-22 10:10:37,095 INFO L226 Difference]: Without dead ends: 2380 [2020-12-22 10:10:37,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:10:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2020-12-22 10:10:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2020-12-22 10:10:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2380 states. [2020-12-22 10:10:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3717 transitions. [2020-12-22 10:10:37,205 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3717 transitions. Word has length 48 [2020-12-22 10:10:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:37,206 INFO L481 AbstractCegarLoop]: Abstraction has 2380 states and 3717 transitions. [2020-12-22 10:10:37,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:10:37,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3717 transitions. [2020-12-22 10:10:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:10:37,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:37,209 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] [2020-12-22 10:10:37,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:10:37,210 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:37,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2020-12-22 10:10:37,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:37,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399349533] [2020-12-22 10:10:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:37,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399349533] [2020-12-22 10:10:37,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:37,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:37,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678421484] [2020-12-22 10:10:37,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:10:37,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:37,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:10:37,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:37,327 INFO L87 Difference]: Start difference. First operand 2380 states and 3717 transitions. Second operand 3 states. [2020-12-22 10:10:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:37,376 INFO L93 Difference]: Finished difference Result 2510 states and 3923 transitions. [2020-12-22 10:10:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:10:37,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:10:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:37,390 INFO L225 Difference]: With dead ends: 2510 [2020-12-22 10:10:37,391 INFO L226 Difference]: Without dead ends: 2442 [2020-12-22 10:10:37,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-12-22 10:10:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2440. [2020-12-22 10:10:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2440 states. [2020-12-22 10:10:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3813 transitions. [2020-12-22 10:10:37,455 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3813 transitions. Word has length 91 [2020-12-22 10:10:37,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:37,456 INFO L481 AbstractCegarLoop]: Abstraction has 2440 states and 3813 transitions. [2020-12-22 10:10:37,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:10:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3813 transitions. [2020-12-22 10:10:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:10:37,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:37,458 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] [2020-12-22 10:10:37,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:10:37,458 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:37,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2020-12-22 10:10:37,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:37,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4584596] [2020-12-22 10:10:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:37,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4584596] [2020-12-22 10:10:37,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:37,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:37,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775398037] [2020-12-22 10:10:37,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:10:37,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:37,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:10:37,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:37,594 INFO L87 Difference]: Start difference. First operand 2440 states and 3813 transitions. Second operand 3 states. [2020-12-22 10:10:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:37,652 INFO L93 Difference]: Finished difference Result 2684 states and 4201 transitions. [2020-12-22 10:10:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:10:37,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:10:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:37,665 INFO L225 Difference]: With dead ends: 2684 [2020-12-22 10:10:37,666 INFO L226 Difference]: Without dead ends: 2556 [2020-12-22 10:10:37,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:37,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2020-12-22 10:10:37,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2554. [2020-12-22 10:10:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2554 states. [2020-12-22 10:10:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3994 transitions. [2020-12-22 10:10:37,731 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3994 transitions. Word has length 91 [2020-12-22 10:10:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:37,733 INFO L481 AbstractCegarLoop]: Abstraction has 2554 states and 3994 transitions. [2020-12-22 10:10:37,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:10:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3994 transitions. [2020-12-22 10:10:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:10:37,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:37,736 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] [2020-12-22 10:10:37,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:10:37,736 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2020-12-22 10:10:37,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:37,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049534425] [2020-12-22 10:10:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:37,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049534425] [2020-12-22 10:10:37,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:37,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:37,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509023915] [2020-12-22 10:10:37,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:10:37,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:10:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:37,846 INFO L87 Difference]: Start difference. First operand 2554 states and 3994 transitions. Second operand 3 states. [2020-12-22 10:10:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:37,908 INFO L93 Difference]: Finished difference Result 3014 states and 4724 transitions. [2020-12-22 10:10:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:10:37,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:10:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:37,928 INFO L225 Difference]: With dead ends: 3014 [2020-12-22 10:10:37,928 INFO L226 Difference]: Without dead ends: 2772 [2020-12-22 10:10:37,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2020-12-22 10:10:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2770. [2020-12-22 10:10:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-12-22 10:10:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4334 transitions. [2020-12-22 10:10:38,019 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4334 transitions. Word has length 91 [2020-12-22 10:10:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:38,020 INFO L481 AbstractCegarLoop]: Abstraction has 2770 states and 4334 transitions. [2020-12-22 10:10:38,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:10:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4334 transitions. [2020-12-22 10:10:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:10:38,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:38,027 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] [2020-12-22 10:10:38,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:10:38,030 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:38,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:38,034 INFO L82 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2020-12-22 10:10:38,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:38,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969610565] [2020-12-22 10:10:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:38,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969610565] [2020-12-22 10:10:38,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:38,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:38,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649468266] [2020-12-22 10:10:38,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:10:38,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:38,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:10:38,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:38,157 INFO L87 Difference]: Start difference. First operand 2770 states and 4334 transitions. Second operand 3 states. [2020-12-22 10:10:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:38,230 INFO L93 Difference]: Finished difference Result 3638 states and 5704 transitions. [2020-12-22 10:10:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:10:38,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:10:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:38,246 INFO L225 Difference]: With dead ends: 3638 [2020-12-22 10:10:38,247 INFO L226 Difference]: Without dead ends: 3180 [2020-12-22 10:10:38,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2020-12-22 10:10:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3178. [2020-12-22 10:10:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-12-22 10:10:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4970 transitions. [2020-12-22 10:10:38,350 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4970 transitions. Word has length 91 [2020-12-22 10:10:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:38,351 INFO L481 AbstractCegarLoop]: Abstraction has 3178 states and 4970 transitions. [2020-12-22 10:10:38,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:10:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4970 transitions. [2020-12-22 10:10:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:10:38,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:38,353 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] [2020-12-22 10:10:38,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:10:38,354 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:38,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:38,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2020-12-22 10:10:38,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:38,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417852490] [2020-12-22 10:10:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:38,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417852490] [2020-12-22 10:10:38,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:38,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:38,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108929948] [2020-12-22 10:10:38,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:10:38,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:38,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:10:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:38,493 INFO L87 Difference]: Start difference. First operand 3178 states and 4970 transitions. Second operand 3 states. [2020-12-22 10:10:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:38,594 INFO L93 Difference]: Finished difference Result 4814 states and 7532 transitions. [2020-12-22 10:10:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:10:38,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:10:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:38,616 INFO L225 Difference]: With dead ends: 4814 [2020-12-22 10:10:38,616 INFO L226 Difference]: Without dead ends: 3948 [2020-12-22 10:10:38,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:38,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2020-12-22 10:10:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3946. [2020-12-22 10:10:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3946 states. [2020-12-22 10:10:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6154 transitions. [2020-12-22 10:10:38,880 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6154 transitions. Word has length 91 [2020-12-22 10:10:38,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:38,882 INFO L481 AbstractCegarLoop]: Abstraction has 3946 states and 6154 transitions. [2020-12-22 10:10:38,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:10:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6154 transitions. [2020-12-22 10:10:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:10:38,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:38,884 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] [2020-12-22 10:10:38,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:10:38,884 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:38,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2020-12-22 10:10:38,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:38,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014536853] [2020-12-22 10:10:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:39,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014536853] [2020-12-22 10:10:39,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:39,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:10:39,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532770698] [2020-12-22 10:10:39,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:10:39,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:39,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:10:39,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:10:39,060 INFO L87 Difference]: Start difference. First operand 3946 states and 6154 transitions. Second operand 9 states. [2020-12-22 10:10:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:40,475 INFO L93 Difference]: Finished difference Result 26822 states and 41784 transitions. [2020-12-22 10:10:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 10:10:40,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-12-22 10:10:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:40,572 INFO L225 Difference]: With dead ends: 26822 [2020-12-22 10:10:40,573 INFO L226 Difference]: Without dead ends: 25188 [2020-12-22 10:10:40,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-12-22 10:10:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25188 states. [2020-12-22 10:10:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25188 to 5578. [2020-12-22 10:10:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5578 states. [2020-12-22 10:10:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 8634 transitions. [2020-12-22 10:10:41,259 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 8634 transitions. Word has length 91 [2020-12-22 10:10:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:41,264 INFO L481 AbstractCegarLoop]: Abstraction has 5578 states and 8634 transitions. [2020-12-22 10:10:41,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:10:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 8634 transitions. [2020-12-22 10:10:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:10:41,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:41,266 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] [2020-12-22 10:10:41,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:10:41,266 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:41,267 INFO L82 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2020-12-22 10:10:41,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:41,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811986340] [2020-12-22 10:10:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:41,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811986340] [2020-12-22 10:10:41,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:41,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:41,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229102546] [2020-12-22 10:10:41,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:10:41,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:41,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:10:41,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:41,357 INFO L87 Difference]: Start difference. First operand 5578 states and 8634 transitions. Second operand 3 states. [2020-12-22 10:10:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:41,740 INFO L93 Difference]: Finished difference Result 10400 states and 16046 transitions. [2020-12-22 10:10:41,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:10:41,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:10:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:41,758 INFO L225 Difference]: With dead ends: 10400 [2020-12-22 10:10:41,759 INFO L226 Difference]: Without dead ends: 7134 [2020-12-22 10:10:41,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2020-12-22 10:10:42,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2020-12-22 10:10:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7132 states. [2020-12-22 10:10:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10972 transitions. [2020-12-22 10:10:42,168 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10972 transitions. Word has length 93 [2020-12-22 10:10:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:42,169 INFO L481 AbstractCegarLoop]: Abstraction has 7132 states and 10972 transitions. [2020-12-22 10:10:42,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:10:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10972 transitions. [2020-12-22 10:10:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:10:42,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:42,170 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] [2020-12-22 10:10:42,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:10:42,171 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:42,171 INFO L82 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2020-12-22 10:10:42,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:42,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024059056] [2020-12-22 10:10:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:42,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024059056] [2020-12-22 10:10:42,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:42,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:10:42,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27243440] [2020-12-22 10:10:42,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:10:42,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:42,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:10:42,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:10:42,469 INFO L87 Difference]: Start difference. First operand 7132 states and 10972 transitions. Second operand 9 states. [2020-12-22 10:10:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:43,321 INFO L93 Difference]: Finished difference Result 11952 states and 18334 transitions. [2020-12-22 10:10:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:10:43,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 10:10:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:43,337 INFO L225 Difference]: With dead ends: 11952 [2020-12-22 10:10:43,338 INFO L226 Difference]: Without dead ends: 7134 [2020-12-22 10:10:43,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-12-22 10:10:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2020-12-22 10:10:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7132. [2020-12-22 10:10:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7132 states. [2020-12-22 10:10:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10924 transitions. [2020-12-22 10:10:43,824 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10924 transitions. Word has length 93 [2020-12-22 10:10:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:43,825 INFO L481 AbstractCegarLoop]: Abstraction has 7132 states and 10924 transitions. [2020-12-22 10:10:43,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:10:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10924 transitions. [2020-12-22 10:10:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:10:43,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:43,827 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] [2020-12-22 10:10:43,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:10:43,827 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:43,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2020-12-22 10:10:43,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:43,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784947329] [2020-12-22 10:10:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:43,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784947329] [2020-12-22 10:10:43,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:43,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:43,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464736987] [2020-12-22 10:10:43,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:10:43,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:43,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:10:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:43,921 INFO L87 Difference]: Start difference. First operand 7132 states and 10924 transitions. Second operand 3 states. [2020-12-22 10:10:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:44,630 INFO L93 Difference]: Finished difference Result 16192 states and 24590 transitions. [2020-12-22 10:10:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:10:44,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:10:44,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:44,656 INFO L225 Difference]: With dead ends: 16192 [2020-12-22 10:10:44,656 INFO L226 Difference]: Without dead ends: 11374 [2020-12-22 10:10:44,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11374 states. [2020-12-22 10:10:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11374 to 11372. [2020-12-22 10:10:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11372 states. [2020-12-22 10:10:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 17180 transitions. [2020-12-22 10:10:45,367 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 17180 transitions. Word has length 93 [2020-12-22 10:10:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:45,367 INFO L481 AbstractCegarLoop]: Abstraction has 11372 states and 17180 transitions. [2020-12-22 10:10:45,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:10:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 17180 transitions. [2020-12-22 10:10:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:10:45,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:45,369 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] [2020-12-22 10:10:45,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:10:45,370 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:45,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2020-12-22 10:10:45,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:45,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669723728] [2020-12-22 10:10:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:45,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669723728] [2020-12-22 10:10:45,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:45,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:10:45,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839623613] [2020-12-22 10:10:45,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:10:45,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:45,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:10:45,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:45,454 INFO L87 Difference]: Start difference. First operand 11372 states and 17180 transitions. Second operand 3 states. [2020-12-22 10:10:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:46,614 INFO L93 Difference]: Finished difference Result 28336 states and 42398 transitions. [2020-12-22 10:10:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:10:46,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:10:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:46,657 INFO L225 Difference]: With dead ends: 28336 [2020-12-22 10:10:46,657 INFO L226 Difference]: Without dead ends: 19278 [2020-12-22 10:10:46,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:10:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2020-12-22 10:10:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 19276. [2020-12-22 10:10:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19276 states. [2020-12-22 10:10:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 28636 transitions. [2020-12-22 10:10:47,992 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 28636 transitions. Word has length 93 [2020-12-22 10:10:47,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:47,992 INFO L481 AbstractCegarLoop]: Abstraction has 19276 states and 28636 transitions. [2020-12-22 10:10:47,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:10:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 28636 transitions. [2020-12-22 10:10:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 10:10:47,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:47,995 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] [2020-12-22 10:10:47,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:10:47,996 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2020-12-22 10:10:47,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:47,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211156322] [2020-12-22 10:10:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:48,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211156322] [2020-12-22 10:10:48,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:48,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:10:48,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774057163] [2020-12-22 10:10:48,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:10:48,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:10:48,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:10:48,107 INFO L87 Difference]: Start difference. First operand 19276 states and 28636 transitions. Second operand 6 states. [2020-12-22 10:10:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:50,264 INFO L93 Difference]: Finished difference Result 51856 states and 76830 transitions. [2020-12-22 10:10:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:10:50,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-12-22 10:10:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:50,335 INFO L225 Difference]: With dead ends: 51856 [2020-12-22 10:10:50,335 INFO L226 Difference]: Without dead ends: 34894 [2020-12-22 10:10:50,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:10:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34894 states. [2020-12-22 10:10:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34894 to 30796. [2020-12-22 10:10:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30796 states. [2020-12-22 10:10:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30796 states to 30796 states and 45532 transitions. [2020-12-22 10:10:52,346 INFO L78 Accepts]: Start accepts. Automaton has 30796 states and 45532 transitions. Word has length 94 [2020-12-22 10:10:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:52,347 INFO L481 AbstractCegarLoop]: Abstraction has 30796 states and 45532 transitions. [2020-12-22 10:10:52,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:10:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 30796 states and 45532 transitions. [2020-12-22 10:10:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 10:10:52,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:52,348 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] [2020-12-22 10:10:52,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:10:52,349 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:52,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2020-12-22 10:10:52,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:52,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086751478] [2020-12-22 10:10:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:52,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086751478] [2020-12-22 10:10:52,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:52,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:10:52,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633811008] [2020-12-22 10:10:52,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:10:52,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:52,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:10:52,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:10:52,450 INFO L87 Difference]: Start difference. First operand 30796 states and 45532 transitions. Second operand 6 states. [2020-12-22 10:10:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:10:54,361 INFO L93 Difference]: Finished difference Result 59278 states and 87453 transitions. [2020-12-22 10:10:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:10:54,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-12-22 10:10:54,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:10:54,419 INFO L225 Difference]: With dead ends: 59278 [2020-12-22 10:10:54,419 INFO L226 Difference]: Without dead ends: 30796 [2020-12-22 10:10:54,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:10:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30796 states. [2020-12-22 10:10:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30796 to 30796. [2020-12-22 10:10:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30796 states. [2020-12-22 10:10:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30796 states to 30796 states and 45212 transitions. [2020-12-22 10:10:56,129 INFO L78 Accepts]: Start accepts. Automaton has 30796 states and 45212 transitions. Word has length 94 [2020-12-22 10:10:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:56,130 INFO L481 AbstractCegarLoop]: Abstraction has 30796 states and 45212 transitions. [2020-12-22 10:10:56,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:10:56,130 INFO L276 IsEmpty]: Start isEmpty. Operand 30796 states and 45212 transitions. [2020-12-22 10:10:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 10:10:56,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:56,131 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] [2020-12-22 10:10:56,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:10:56,132 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2020-12-22 10:10:56,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:56,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802304477] [2020-12-22 10:10:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:56,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802304477] [2020-12-22 10:10:56,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:10:56,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:10:56,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755978463] [2020-12-22 10:10:56,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:10:56,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:10:56,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:10:56,258 INFO L87 Difference]: Start difference. First operand 30796 states and 45212 transitions. Second operand 8 states. [2020-12-22 10:11:00,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:11:00,951 INFO L93 Difference]: Finished difference Result 57839 states and 83910 transitions. [2020-12-22 10:11:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:11:00,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-12-22 10:11:00,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:11:01,033 INFO L225 Difference]: With dead ends: 57839 [2020-12-22 10:11:01,033 INFO L226 Difference]: Without dead ends: 57837 [2020-12-22 10:11:01,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:11:01,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57837 states. [2020-12-22 10:11:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57837 to 32332. [2020-12-22 10:11:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32332 states. [2020-12-22 10:11:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32332 states to 32332 states and 46684 transitions. [2020-12-22 10:11:03,224 INFO L78 Accepts]: Start accepts. Automaton has 32332 states and 46684 transitions. Word has length 94 [2020-12-22 10:11:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:11:03,224 INFO L481 AbstractCegarLoop]: Abstraction has 32332 states and 46684 transitions. [2020-12-22 10:11:03,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:11:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 32332 states and 46684 transitions. [2020-12-22 10:11:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 10:11:03,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:11:03,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:11:03,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:11:03,230 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:11:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:11:03,230 INFO L82 PathProgramCache]: Analyzing trace with hash 778341306, now seen corresponding path program 1 times [2020-12-22 10:11:03,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:11:03,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305750325] [2020-12-22 10:11:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:11:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:11:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:11:03,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305750325] [2020-12-22 10:11:03,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:11:03,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:11:03,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911765802] [2020-12-22 10:11:03,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:11:03,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:11:03,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:11:03,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:11:03,401 INFO L87 Difference]: Start difference. First operand 32332 states and 46684 transitions. Second operand 4 states. [2020-12-22 10:11:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:11:11,897 INFO L93 Difference]: Finished difference Result 36128 states and 53048 transitions. [2020-12-22 10:11:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:11:11,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-12-22 10:11:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:11:11,943 INFO L225 Difference]: With dead ends: 36128 [2020-12-22 10:11:11,943 INFO L226 Difference]: Without dead ends: 33836 [2020-12-22 10:11:11,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:11:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33836 states. [2020-12-22 10:11:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33836 to 33834. [2020-12-22 10:11:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33834 states. [2020-12-22 10:11:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33834 states to 33834 states and 48272 transitions. [2020-12-22 10:11:14,047 INFO L78 Accepts]: Start accepts. Automaton has 33834 states and 48272 transitions. Word has length 119 [2020-12-22 10:11:14,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:11:14,048 INFO L481 AbstractCegarLoop]: Abstraction has 33834 states and 48272 transitions. [2020-12-22 10:11:14,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:11:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 33834 states and 48272 transitions. [2020-12-22 10:11:14,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 10:11:14,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:11:14,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:11:14,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:11:14,065 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:11:14,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:11:14,065 INFO L82 PathProgramCache]: Analyzing trace with hash 101873069, now seen corresponding path program 1 times [2020-12-22 10:11:14,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:11:14,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467276495] [2020-12-22 10:11:14,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:11:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:11:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:11:14,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467276495] [2020-12-22 10:11:14,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:11:14,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:11:14,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756607130] [2020-12-22 10:11:14,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:11:14,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:11:14,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:11:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:11:14,242 INFO L87 Difference]: Start difference. First operand 33834 states and 48272 transitions. Second operand 9 states. [2020-12-22 10:11:27,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:11:27,811 INFO L93 Difference]: Finished difference Result 253562 states and 363256 transitions. [2020-12-22 10:11:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:11:27,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-12-22 10:11:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:11:28,413 INFO L225 Difference]: With dead ends: 253562 [2020-12-22 10:11:28,414 INFO L226 Difference]: Without dead ends: 223544 [2020-12-22 10:11:28,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:11:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223544 states. [2020-12-22 10:11:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223544 to 63850. [2020-12-22 10:11:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63850 states. [2020-12-22 10:11:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63850 states to 63850 states and 91024 transitions. [2020-12-22 10:11:34,475 INFO L78 Accepts]: Start accepts. Automaton has 63850 states and 91024 transitions. Word has length 130 [2020-12-22 10:11:34,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:11:34,476 INFO L481 AbstractCegarLoop]: Abstraction has 63850 states and 91024 transitions. [2020-12-22 10:11:34,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:11:34,476 INFO L276 IsEmpty]: Start isEmpty. Operand 63850 states and 91024 transitions. [2020-12-22 10:11:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 10:11:34,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:11:34,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:11:34,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:11:34,502 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:11:34,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:11:34,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1349380685, now seen corresponding path program 1 times [2020-12-22 10:11:34,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:11:34,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93906383] [2020-12-22 10:11:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:11:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:11:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:11:34,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93906383] [2020-12-22 10:11:34,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:11:34,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:11:34,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478201362] [2020-12-22 10:11:34,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:11:34,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:11:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:11:34,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:11:34,674 INFO L87 Difference]: Start difference. First operand 63850 states and 91024 transitions. Second operand 9 states. [2020-12-22 10:11:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:11:52,118 INFO L93 Difference]: Finished difference Result 283578 states and 406008 transitions. [2020-12-22 10:11:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:11:52,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-12-22 10:11:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:11:52,521 INFO L225 Difference]: With dead ends: 283578 [2020-12-22 10:11:52,522 INFO L226 Difference]: Without dead ends: 253560 [2020-12-22 10:11:52,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:11:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253560 states. [2020-12-22 10:12:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253560 to 108906. [2020-12-22 10:12:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108906 states. [2020-12-22 10:12:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108906 states to 108906 states and 154864 transitions. [2020-12-22 10:12:02,397 INFO L78 Accepts]: Start accepts. Automaton has 108906 states and 154864 transitions. Word has length 130 [2020-12-22 10:12:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:12:02,397 INFO L481 AbstractCegarLoop]: Abstraction has 108906 states and 154864 transitions. [2020-12-22 10:12:02,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:12:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 108906 states and 154864 transitions. [2020-12-22 10:12:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 10:12:02,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:12:02,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:12:02,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:12:02,416 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:12:02,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:12:02,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1476153629, now seen corresponding path program 1 times [2020-12-22 10:12:02,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:12:02,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662665843] [2020-12-22 10:12:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:12:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:12:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:12:02,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662665843] [2020-12-22 10:12:02,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:12:02,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:12:02,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499934771] [2020-12-22 10:12:02,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:12:02,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:12:02,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:12:02,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:12:02,584 INFO L87 Difference]: Start difference. First operand 108906 states and 154864 transitions. Second operand 9 states. [2020-12-22 10:12:23,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:12:23,118 INFO L93 Difference]: Finished difference Result 313594 states and 448760 transitions. [2020-12-22 10:12:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:12:23,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-12-22 10:12:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:12:23,525 INFO L225 Difference]: With dead ends: 313594 [2020-12-22 10:12:23,526 INFO L226 Difference]: Without dead ends: 283576 [2020-12-22 10:12:23,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:12:23,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283576 states. [2020-12-22 10:12:35,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283576 to 138922. [2020-12-22 10:12:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138922 states. [2020-12-22 10:12:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138922 states to 138922 states and 197616 transitions. [2020-12-22 10:12:36,102 INFO L78 Accepts]: Start accepts. Automaton has 138922 states and 197616 transitions. Word has length 130 [2020-12-22 10:12:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:12:36,102 INFO L481 AbstractCegarLoop]: Abstraction has 138922 states and 197616 transitions. [2020-12-22 10:12:36,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:12:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 138922 states and 197616 transitions. [2020-12-22 10:12:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 10:12:36,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:12:36,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:12:36,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:12:36,120 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:12:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:12:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1583354627, now seen corresponding path program 1 times [2020-12-22 10:12:36,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:12:36,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78722514] [2020-12-22 10:12:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:12:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:12:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:12:36,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78722514] [2020-12-22 10:12:36,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:12:36,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:12:36,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465784024] [2020-12-22 10:12:36,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:12:36,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:12:36,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:12:36,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:12:36,534 INFO L87 Difference]: Start difference. First operand 138922 states and 197616 transitions. Second operand 9 states. [2020-12-22 10:13:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:13:01,174 INFO L93 Difference]: Finished difference Result 343610 states and 491512 transitions. [2020-12-22 10:13:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:13:01,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-12-22 10:13:01,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:13:01,638 INFO L225 Difference]: With dead ends: 343610 [2020-12-22 10:13:01,638 INFO L226 Difference]: Without dead ends: 313592 [2020-12-22 10:13:01,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:13:01,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313592 states. [2020-12-22 10:13:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313592 to 168938. [2020-12-22 10:13:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168938 states. [2020-12-22 10:13:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168938 states to 168938 states and 240368 transitions. [2020-12-22 10:13:17,942 INFO L78 Accepts]: Start accepts. Automaton has 168938 states and 240368 transitions. Word has length 130 [2020-12-22 10:13:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:13:17,943 INFO L481 AbstractCegarLoop]: Abstraction has 168938 states and 240368 transitions. [2020-12-22 10:13:17,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:13:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 168938 states and 240368 transitions. [2020-12-22 10:13:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 10:13:17,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:13:17,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:13:17,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:13:17,966 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:13:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:13:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash 162359075, now seen corresponding path program 1 times [2020-12-22 10:13:17,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:13:17,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204026615] [2020-12-22 10:13:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:13:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:13:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:13:18,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204026615] [2020-12-22 10:13:18,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:13:18,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:13:18,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605247625] [2020-12-22 10:13:18,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:13:18,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:13:18,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:13:18,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:13:18,133 INFO L87 Difference]: Start difference. First operand 168938 states and 240368 transitions. Second operand 9 states.