/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.6.1.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:01:19,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:01:19,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:01:19,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:01:19,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:01:19,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:01:19,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:01:19,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:01:19,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:01:19,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:01:19,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:01:19,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:01:19,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:01:19,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:01:19,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:01:19,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:01:19,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:01:19,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:01:19,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:01:19,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:01:19,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:01:19,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:01:19,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:01:19,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:01:19,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:01:19,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:01:19,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:01:19,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:01:19,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:01:19,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:01:19,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:01:19,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:01:19,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:01:19,901 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:01:19,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:01:19,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:01:19,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:01:19,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:01:19,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:01:19,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:01:19,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:01:19,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:01:19,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:01:19,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:01:19,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:01:19,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:01:19,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:01:19,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:01:19,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:01:19,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:01:19,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:01:19,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:01:19,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:01:19,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:01:19,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:01:20,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:01:20,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:01:20,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:01:20,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:01:20,412 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:01:20,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2020-12-22 10:01:20,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7961b734c/428933f61ce143ba839a4fe0c3a899ce/FLAG0460c0ac2 [2020-12-22 10:01:21,498 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:01:21,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2020-12-22 10:01:21,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7961b734c/428933f61ce143ba839a4fe0c3a899ce/FLAG0460c0ac2 [2020-12-22 10:01:21,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7961b734c/428933f61ce143ba839a4fe0c3a899ce [2020-12-22 10:01:21,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:01:21,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:01:21,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:01:21,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:01:21,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:01:21,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:01:21" (1/1) ... [2020-12-22 10:01:21,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c432fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:21, skipping insertion in model container [2020-12-22 10:01:21,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:01:21" (1/1) ... [2020-12-22 10:01:21,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:01:22,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:01:22,566 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.6.1.ufo.UNBOUNDED.pals+Problem12_label01.c[15651,15664] [2020-12-22 10:01:22,621 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.6.1.ufo.UNBOUNDED.pals+Problem12_label01.c[20963,20976] [2020-12-22 10:01:23,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:01:23,577 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:01:23,661 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.6.1.ufo.UNBOUNDED.pals+Problem12_label01.c[15651,15664] [2020-12-22 10:01:23,753 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.6.1.ufo.UNBOUNDED.pals+Problem12_label01.c[20963,20976] [2020-12-22 10:01:24,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:01:24,399 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:01:24,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24 WrapperNode [2020-12-22 10:01:24,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:01:24,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:01:24,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:01:24,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:01:24,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:24,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:24,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:01:24,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:01:24,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:01:24,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:01:24,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:24,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:25,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:25,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:25,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:25,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:25,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (1/1) ... [2020-12-22 10:01:25,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:01:25,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:01:25,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:01:25,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:01:25,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (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 10:01:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:01:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:01:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:01:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:01:30,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:01:30,779 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:01:30,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:01:30 BoogieIcfgContainer [2020-12-22 10:01:30,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:01:30,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:01:30,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:01:30,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:01:30,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:01:21" (1/3) ... [2020-12-22 10:01:30,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9f124c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:01:30, skipping insertion in model container [2020-12-22 10:01:30,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:01:24" (2/3) ... [2020-12-22 10:01:30,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9f124c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:01:30, skipping insertion in model container [2020-12-22 10:01:30,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:01:30" (3/3) ... [2020-12-22 10:01:30,792 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2020-12-22 10:01:30,799 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:01:30,815 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:01:30,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:01:30,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:01:30,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:01:30,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:01:30,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:01:30,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:01:30,877 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:01:30,877 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:01:30,877 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:01:30,914 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:01:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:01:30,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:30,926 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] [2020-12-22 10:01:30,926 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:30,933 INFO L82 PathProgramCache]: Analyzing trace with hash -321533933, now seen corresponding path program 1 times [2020-12-22 10:01:30,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:30,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426437223] [2020-12-22 10:01:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:31,314 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 10:01:31,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426437223] [2020-12-22 10:01:31,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:31,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:01:31,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746109252] [2020-12-22 10:01:31,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:01:31,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:31,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:01:31,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:01:31,344 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 2 states. [2020-12-22 10:01:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:31,446 INFO L93 Difference]: Finished difference Result 1806 states and 3420 transitions. [2020-12-22 10:01:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:01:31,448 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2020-12-22 10:01:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:31,480 INFO L225 Difference]: With dead ends: 1806 [2020-12-22 10:01:31,480 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:01:31,490 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 10:01:31,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:01:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:01:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:01:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1622 transitions. [2020-12-22 10:01:31,656 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1622 transitions. Word has length 38 [2020-12-22 10:01:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:31,657 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1622 transitions. [2020-12-22 10:01:31,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:01:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1622 transitions. [2020-12-22 10:01:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:01:31,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:31,667 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] [2020-12-22 10:01:31,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:01:31,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:31,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:31,670 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:01:31,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:31,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795559161] [2020-12-22 10:01:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:31,992 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 10:01:31,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795559161] [2020-12-22 10:01:31,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:31,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:01:31,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298992731] [2020-12-22 10:01:31,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:01:31,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:31,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:01:31,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:01:31,999 INFO L87 Difference]: Start difference. First operand 861 states and 1622 transitions. Second operand 5 states. [2020-12-22 10:01:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:32,168 INFO L93 Difference]: Finished difference Result 926 states and 1723 transitions. [2020-12-22 10:01:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:01:32,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:01:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:32,178 INFO L225 Difference]: With dead ends: 926 [2020-12-22 10:01:32,178 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:01:32,180 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 10:01:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:01:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:01:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:01:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1582 transitions. [2020-12-22 10:01:32,227 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1582 transitions. Word has length 38 [2020-12-22 10:01:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:32,228 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1582 transitions. [2020-12-22 10:01:32,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:01:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1582 transitions. [2020-12-22 10:01:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 10:01:32,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:32,230 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 10:01:32,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:01:32,231 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:32,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2079798165, now seen corresponding path program 1 times [2020-12-22 10:01:32,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:32,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6448245] [2020-12-22 10:01:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:32,363 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 10:01:32,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6448245] [2020-12-22 10:01:32,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:32,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:01:32,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460907379] [2020-12-22 10:01:32,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:01:32,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:32,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:01:32,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:01:32,378 INFO L87 Difference]: Start difference. First operand 861 states and 1582 transitions. Second operand 3 states. [2020-12-22 10:01:37,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:37,956 INFO L93 Difference]: Finished difference Result 2365 states and 4455 transitions. [2020-12-22 10:01:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:01:37,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 10:01:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:37,967 INFO L225 Difference]: With dead ends: 2365 [2020-12-22 10:01:37,967 INFO L226 Difference]: Without dead ends: 1612 [2020-12-22 10:01:37,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:01:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-12-22 10:01:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2020-12-22 10:01:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-12-22 10:01:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2609 transitions. [2020-12-22 10:01:38,014 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2609 transitions. Word has length 48 [2020-12-22 10:01:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:38,015 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2609 transitions. [2020-12-22 10:01:38,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:01:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2609 transitions. [2020-12-22 10:01:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:01:38,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:38,017 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] [2020-12-22 10:01:38,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:01:38,018 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:01:38,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:38,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936120114] [2020-12-22 10:01:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:38,125 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 10:01:38,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936120114] [2020-12-22 10:01:38,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:38,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:01:38,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222578053] [2020-12-22 10:01:38,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:01:38,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:38,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:01:38,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:01:38,128 INFO L87 Difference]: Start difference. First operand 1612 states and 2609 transitions. Second operand 3 states. [2020-12-22 10:01:38,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:38,172 INFO L93 Difference]: Finished difference Result 1728 states and 2793 transitions. [2020-12-22 10:01:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:01:38,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:01:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:38,183 INFO L225 Difference]: With dead ends: 1728 [2020-12-22 10:01:38,183 INFO L226 Difference]: Without dead ends: 1667 [2020-12-22 10:01:38,184 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 10:01:38,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-12-22 10:01:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2020-12-22 10:01:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2020-12-22 10:01:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2694 transitions. [2020-12-22 10:01:38,228 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2694 transitions. Word has length 77 [2020-12-22 10:01:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:38,228 INFO L481 AbstractCegarLoop]: Abstraction has 1665 states and 2694 transitions. [2020-12-22 10:01:38,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:01:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2694 transitions. [2020-12-22 10:01:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:01:38,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:38,230 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] [2020-12-22 10:01:38,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:01:38,230 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:38,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:38,231 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:01:38,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:38,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213258477] [2020-12-22 10:01:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:38,315 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 10:01:38,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213258477] [2020-12-22 10:01:38,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:38,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:01:38,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958912506] [2020-12-22 10:01:38,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:01:38,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:01:38,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:01:38,318 INFO L87 Difference]: Start difference. First operand 1665 states and 2694 transitions. Second operand 3 states. [2020-12-22 10:01:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:38,370 INFO L93 Difference]: Finished difference Result 1881 states and 3038 transitions. [2020-12-22 10:01:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:01:38,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:01:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:38,381 INFO L225 Difference]: With dead ends: 1881 [2020-12-22 10:01:38,382 INFO L226 Difference]: Without dead ends: 1767 [2020-12-22 10:01:38,383 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 10:01:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-12-22 10:01:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2020-12-22 10:01:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-12-22 10:01:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2853 transitions. [2020-12-22 10:01:38,436 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2853 transitions. Word has length 77 [2020-12-22 10:01:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:38,437 INFO L481 AbstractCegarLoop]: Abstraction has 1765 states and 2853 transitions. [2020-12-22 10:01:38,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:01:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2853 transitions. [2020-12-22 10:01:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:01:38,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:38,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:01:38,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:01:38,439 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:38,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:38,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:01:38,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:38,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053404059] [2020-12-22 10:01:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:38,563 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 10:01:38,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053404059] [2020-12-22 10:01:38,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:38,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:01:38,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122177775] [2020-12-22 10:01:38,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:01:38,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:38,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:01:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:01:38,566 INFO L87 Difference]: Start difference. First operand 1765 states and 2853 transitions. Second operand 3 states. [2020-12-22 10:01:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:38,631 INFO L93 Difference]: Finished difference Result 2169 states and 3495 transitions. [2020-12-22 10:01:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:01:38,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:01:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:38,644 INFO L225 Difference]: With dead ends: 2169 [2020-12-22 10:01:38,644 INFO L226 Difference]: Without dead ends: 1955 [2020-12-22 10:01:38,646 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 10:01:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-12-22 10:01:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1953. [2020-12-22 10:01:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2020-12-22 10:01:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3149 transitions. [2020-12-22 10:01:38,766 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3149 transitions. Word has length 77 [2020-12-22 10:01:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:38,767 INFO L481 AbstractCegarLoop]: Abstraction has 1953 states and 3149 transitions. [2020-12-22 10:01:38,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:01:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3149 transitions. [2020-12-22 10:01:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:01:38,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:38,768 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] [2020-12-22 10:01:38,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:01:38,769 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:38,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:01:38,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:38,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150379324] [2020-12-22 10:01:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:38,907 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 10:01:38,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150379324] [2020-12-22 10:01:38,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:38,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:01:38,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33273452] [2020-12-22 10:01:38,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:01:38,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:01:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:01:38,922 INFO L87 Difference]: Start difference. First operand 1953 states and 3149 transitions. Second operand 3 states. [2020-12-22 10:01:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:38,982 INFO L93 Difference]: Finished difference Result 2709 states and 4343 transitions. [2020-12-22 10:01:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:01:38,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:01:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:38,998 INFO L225 Difference]: With dead ends: 2709 [2020-12-22 10:01:38,998 INFO L226 Difference]: Without dead ends: 2307 [2020-12-22 10:01:39,001 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 10:01:39,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2020-12-22 10:01:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2305. [2020-12-22 10:01:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-12-22 10:01:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3697 transitions. [2020-12-22 10:01:39,079 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3697 transitions. Word has length 77 [2020-12-22 10:01:39,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:39,080 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 3697 transitions. [2020-12-22 10:01:39,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:01:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3697 transitions. [2020-12-22 10:01:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:01:39,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:39,082 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] [2020-12-22 10:01:39,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:01:39,082 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:39,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:01:39,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:39,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377313298] [2020-12-22 10:01:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:39,179 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 10:01:39,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377313298] [2020-12-22 10:01:39,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:39,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:01:39,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478503864] [2020-12-22 10:01:39,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:01:39,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:39,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:01:39,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:01:39,182 INFO L87 Difference]: Start difference. First operand 2305 states and 3697 transitions. Second operand 3 states. [2020-12-22 10:01:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:39,261 INFO L93 Difference]: Finished difference Result 3717 states and 5907 transitions. [2020-12-22 10:01:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:01:39,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:01:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:39,277 INFO L225 Difference]: With dead ends: 3717 [2020-12-22 10:01:39,277 INFO L226 Difference]: Without dead ends: 2963 [2020-12-22 10:01:39,280 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 10:01:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-12-22 10:01:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2961. [2020-12-22 10:01:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-12-22 10:01:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4705 transitions. [2020-12-22 10:01:39,383 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4705 transitions. Word has length 77 [2020-12-22 10:01:39,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:39,383 INFO L481 AbstractCegarLoop]: Abstraction has 2961 states and 4705 transitions. [2020-12-22 10:01:39,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:01:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4705 transitions. [2020-12-22 10:01:39,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:01:39,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:39,391 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] [2020-12-22 10:01:39,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:01:39,391 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:39,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:39,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:01:39,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:39,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205717048] [2020-12-22 10:01:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:39,517 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 10:01:39,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205717048] [2020-12-22 10:01:39,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:39,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:01:39,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717777036] [2020-12-22 10:01:39,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:01:39,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:39,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:01:39,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:01:39,522 INFO L87 Difference]: Start difference. First operand 2961 states and 4705 transitions. Second operand 8 states. [2020-12-22 10:01:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:40,628 INFO L93 Difference]: Finished difference Result 19881 states and 31021 transitions. [2020-12-22 10:01:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:01:40,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:01:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:40,713 INFO L225 Difference]: With dead ends: 19881 [2020-12-22 10:01:40,713 INFO L226 Difference]: Without dead ends: 18471 [2020-12-22 10:01:40,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:01:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2020-12-22 10:01:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 4369. [2020-12-22 10:01:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-12-22 10:01:41,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6833 transitions. [2020-12-22 10:01:41,203 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6833 transitions. Word has length 77 [2020-12-22 10:01:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:41,204 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 6833 transitions. [2020-12-22 10:01:41,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:01:41,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6833 transitions. [2020-12-22 10:01:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:01:41,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:41,205 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] [2020-12-22 10:01:41,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:01:41,206 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:41,207 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:01:41,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:41,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794181226] [2020-12-22 10:01:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:41,288 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 10:01:41,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794181226] [2020-12-22 10:01:41,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:41,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:01:41,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484566284] [2020-12-22 10:01:41,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:01:41,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:41,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:01:41,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:01:41,291 INFO L87 Difference]: Start difference. First operand 4369 states and 6833 transitions. Second operand 3 states. [2020-12-22 10:01:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:41,672 INFO L93 Difference]: Finished difference Result 9653 states and 14867 transitions. [2020-12-22 10:01:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:01:41,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:01:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:41,692 INFO L225 Difference]: With dead ends: 9653 [2020-12-22 10:01:41,692 INFO L226 Difference]: Without dead ends: 6835 [2020-12-22 10:01:41,700 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 10:01:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2020-12-22 10:01:42,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6769. [2020-12-22 10:01:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:01:42,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10321 transitions. [2020-12-22 10:01:42,268 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10321 transitions. Word has length 79 [2020-12-22 10:01:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:42,268 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10321 transitions. [2020-12-22 10:01:42,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:01:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10321 transitions. [2020-12-22 10:01:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:01:42,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:42,269 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] [2020-12-22 10:01:42,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:01:42,270 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:42,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:42,270 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:01:42,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:42,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153796424] [2020-12-22 10:01:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:42,515 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 10:01:42,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153796424] [2020-12-22 10:01:42,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:42,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:01:42,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795427187] [2020-12-22 10:01:42,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:01:42,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:42,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:01:42,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:01:42,518 INFO L87 Difference]: Start difference. First operand 6769 states and 10321 transitions. Second operand 8 states. [2020-12-22 10:01:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:43,174 INFO L93 Difference]: Finished difference Result 11989 states and 18131 transitions. [2020-12-22 10:01:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:01:43,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:01:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:43,190 INFO L225 Difference]: With dead ends: 11989 [2020-12-22 10:01:43,190 INFO L226 Difference]: Without dead ends: 6771 [2020-12-22 10:01:43,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:01:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-12-22 10:01:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6769. [2020-12-22 10:01:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:01:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10257 transitions. [2020-12-22 10:01:43,541 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10257 transitions. Word has length 79 [2020-12-22 10:01:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:43,542 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10257 transitions. [2020-12-22 10:01:43,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:01:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10257 transitions. [2020-12-22 10:01:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:01:43,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:43,544 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] [2020-12-22 10:01:43,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:01:43,544 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:43,545 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:01:43,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:43,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782090661] [2020-12-22 10:01:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:43,762 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 10:01:43,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782090661] [2020-12-22 10:01:43,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:43,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:01:43,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090960626] [2020-12-22 10:01:43,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:01:43,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:43,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:01:43,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:01:43,764 INFO L87 Difference]: Start difference. First operand 6769 states and 10257 transitions. Second operand 6 states. [2020-12-22 10:01:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:44,201 INFO L93 Difference]: Finished difference Result 11987 states and 18002 transitions. [2020-12-22 10:01:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:01:44,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:01:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:44,217 INFO L225 Difference]: With dead ends: 11987 [2020-12-22 10:01:44,218 INFO L226 Difference]: Without dead ends: 6769 [2020-12-22 10:01:44,227 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 10:01:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2020-12-22 10:01:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6769. [2020-12-22 10:01:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:01:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10193 transitions. [2020-12-22 10:01:44,609 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10193 transitions. Word has length 80 [2020-12-22 10:01:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:44,609 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10193 transitions. [2020-12-22 10:01:44,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:01:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10193 transitions. [2020-12-22 10:01:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:01:44,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:44,611 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] [2020-12-22 10:01:44,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:01:44,611 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:44,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:01:44,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:44,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847844516] [2020-12-22 10:01:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:44,758 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 10:01:44,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847844516] [2020-12-22 10:01:44,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:44,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:01:44,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992806007] [2020-12-22 10:01:44,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:01:44,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:44,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:01:44,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:01:44,766 INFO L87 Difference]: Start difference. First operand 6769 states and 10193 transitions. Second operand 8 states. [2020-12-22 10:01:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:45,614 INFO L93 Difference]: Finished difference Result 10675 states and 15836 transitions. [2020-12-22 10:01:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:01:45,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:01:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:45,641 INFO L225 Difference]: With dead ends: 10675 [2020-12-22 10:01:45,641 INFO L226 Difference]: Without dead ends: 10673 [2020-12-22 10:01:45,647 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 10:01:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10673 states. [2020-12-22 10:01:46,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10673 to 6961. [2020-12-22 10:01:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6961 states. [2020-12-22 10:01:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 10353 transitions. [2020-12-22 10:01:46,145 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 10353 transitions. Word has length 80 [2020-12-22 10:01:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:46,146 INFO L481 AbstractCegarLoop]: Abstraction has 6961 states and 10353 transitions. [2020-12-22 10:01:46,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:01:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 10353 transitions. [2020-12-22 10:01:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:01:46,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:46,147 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] [2020-12-22 10:01:46,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:01:46,148 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:46,148 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:01:46,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:46,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662235972] [2020-12-22 10:01:46,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:46,200 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 10:01:46,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662235972] [2020-12-22 10:01:46,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:46,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:01:46,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152310132] [2020-12-22 10:01:46,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:01:46,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:46,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:01:46,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:01:46,203 INFO L87 Difference]: Start difference. First operand 6961 states and 10353 transitions. Second operand 3 states. [2020-12-22 10:01:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:46,855 INFO L93 Difference]: Finished difference Result 12472 states and 18423 transitions. [2020-12-22 10:01:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:01:46,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:01:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:46,877 INFO L225 Difference]: With dead ends: 12472 [2020-12-22 10:01:46,877 INFO L226 Difference]: Without dead ends: 9461 [2020-12-22 10:01:46,885 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 10:01:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2020-12-22 10:01:47,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9459. [2020-12-22 10:01:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9459 states. [2020-12-22 10:01:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13907 transitions. [2020-12-22 10:01:47,542 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13907 transitions. Word has length 81 [2020-12-22 10:01:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:47,542 INFO L481 AbstractCegarLoop]: Abstraction has 9459 states and 13907 transitions. [2020-12-22 10:01:47,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:01:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13907 transitions. [2020-12-22 10:01:47,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:01:47,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:47,549 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:01:47,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:01:47,549 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:47,550 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:01:47,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:47,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291783285] [2020-12-22 10:01:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:01:47,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291783285] [2020-12-22 10:01:47,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:47,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:01:47,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148306772] [2020-12-22 10:01:47,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:01:47,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:47,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:01:47,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:01:47,728 INFO L87 Difference]: Start difference. First operand 9459 states and 13907 transitions. Second operand 8 states. [2020-12-22 10:01:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:50,677 INFO L93 Difference]: Finished difference Result 58465 states and 84442 transitions. [2020-12-22 10:01:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:01:50,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:01:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:50,786 INFO L225 Difference]: With dead ends: 58465 [2020-12-22 10:01:50,787 INFO L226 Difference]: Without dead ends: 50559 [2020-12-22 10:01:50,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:01:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50559 states. [2020-12-22 10:01:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50559 to 17363. [2020-12-22 10:01:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17363 states. [2020-12-22 10:01:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17363 states to 17363 states and 25203 transitions. [2020-12-22 10:01:52,281 INFO L78 Accepts]: Start accepts. Automaton has 17363 states and 25203 transitions. Word has length 111 [2020-12-22 10:01:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:52,282 INFO L481 AbstractCegarLoop]: Abstraction has 17363 states and 25203 transitions. [2020-12-22 10:01:52,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:01:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 17363 states and 25203 transitions. [2020-12-22 10:01:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:01:52,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:52,289 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:01:52,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:01:52,290 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:52,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:01:52,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:52,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661574095] [2020-12-22 10:01:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:01:52,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661574095] [2020-12-22 10:01:52,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:52,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:01:52,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070351582] [2020-12-22 10:01:52,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:01:52,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:52,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:01:52,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:01:52,432 INFO L87 Difference]: Start difference. First operand 17363 states and 25203 transitions. Second operand 8 states. [2020-12-22 10:01:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:01:55,690 INFO L93 Difference]: Finished difference Result 66369 states and 95738 transitions. [2020-12-22 10:01:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:01:55,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:01:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:01:55,814 INFO L225 Difference]: With dead ends: 66369 [2020-12-22 10:01:55,814 INFO L226 Difference]: Without dead ends: 58463 [2020-12-22 10:01:55,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:01:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58463 states. [2020-12-22 10:01:58,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58463 to 29235. [2020-12-22 10:01:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29235 states. [2020-12-22 10:01:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29235 states to 29235 states and 42067 transitions. [2020-12-22 10:01:58,170 INFO L78 Accepts]: Start accepts. Automaton has 29235 states and 42067 transitions. Word has length 111 [2020-12-22 10:01:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:01:58,171 INFO L481 AbstractCegarLoop]: Abstraction has 29235 states and 42067 transitions. [2020-12-22 10:01:58,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:01:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 29235 states and 42067 transitions. [2020-12-22 10:01:58,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:01:58,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:01:58,178 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:01:58,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:01:58,179 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:01:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:01:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:01:58,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:01:58,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867846850] [2020-12-22 10:01:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:01:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:01:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:01:58,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867846850] [2020-12-22 10:01:58,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:01:58,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:01:58,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822534705] [2020-12-22 10:01:58,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:01:58,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:01:58,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:01:58,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:01:58,482 INFO L87 Difference]: Start difference. First operand 29235 states and 42067 transitions. Second operand 8 states. [2020-12-22 10:02:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:02,286 INFO L93 Difference]: Finished difference Result 74273 states and 107034 transitions. [2020-12-22 10:02:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:02:02,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:02:02,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:02,383 INFO L225 Difference]: With dead ends: 74273 [2020-12-22 10:02:02,383 INFO L226 Difference]: Without dead ends: 66367 [2020-12-22 10:02:02,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:02:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66367 states. [2020-12-22 10:02:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66367 to 37139. [2020-12-22 10:02:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37139 states. [2020-12-22 10:02:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37139 states to 37139 states and 53363 transitions. [2020-12-22 10:02:05,066 INFO L78 Accepts]: Start accepts. Automaton has 37139 states and 53363 transitions. Word has length 111 [2020-12-22 10:02:05,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:05,066 INFO L481 AbstractCegarLoop]: Abstraction has 37139 states and 53363 transitions. [2020-12-22 10:02:05,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:02:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 37139 states and 53363 transitions. [2020-12-22 10:02:05,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:02:05,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:05,075 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:02:05,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:02:05,075 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:05,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:05,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:02:05,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:05,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540491068] [2020-12-22 10:02:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:02:05,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540491068] [2020-12-22 10:02:05,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:05,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:02:05,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768759826] [2020-12-22 10:02:05,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:02:05,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:05,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:02:05,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:02:05,368 INFO L87 Difference]: Start difference. First operand 37139 states and 53363 transitions. Second operand 8 states. [2020-12-22 10:02:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:10,405 INFO L93 Difference]: Finished difference Result 82177 states and 118330 transitions. [2020-12-22 10:02:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:02:10,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:02:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:10,552 INFO L225 Difference]: With dead ends: 82177 [2020-12-22 10:02:10,552 INFO L226 Difference]: Without dead ends: 74271 [2020-12-22 10:02:10,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:02:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74271 states. [2020-12-22 10:02:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74271 to 45043. [2020-12-22 10:02:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45043 states. [2020-12-22 10:02:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45043 states to 45043 states and 64659 transitions. [2020-12-22 10:02:14,124 INFO L78 Accepts]: Start accepts. Automaton has 45043 states and 64659 transitions. Word has length 111 [2020-12-22 10:02:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:14,124 INFO L481 AbstractCegarLoop]: Abstraction has 45043 states and 64659 transitions. [2020-12-22 10:02:14,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:02:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 45043 states and 64659 transitions. [2020-12-22 10:02:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:02:14,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:14,135 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:02:14,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:02:14,135 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:14,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:14,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:02:14,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:14,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343405076] [2020-12-22 10:02:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:02:14,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343405076] [2020-12-22 10:02:14,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:14,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:02:14,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820794722] [2020-12-22 10:02:14,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:02:14,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:14,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:02:14,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:02:14,272 INFO L87 Difference]: Start difference. First operand 45043 states and 64659 transitions. Second operand 8 states. [2020-12-22 10:02:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:19,955 INFO L93 Difference]: Finished difference Result 90081 states and 129626 transitions. [2020-12-22 10:02:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:02:19,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:02:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:20,041 INFO L225 Difference]: With dead ends: 90081 [2020-12-22 10:02:20,042 INFO L226 Difference]: Without dead ends: 82175 [2020-12-22 10:02:20,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:02:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82175 states. [2020-12-22 10:02:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82175 to 52947. [2020-12-22 10:02:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52947 states. [2020-12-22 10:02:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52947 states to 52947 states and 75955 transitions. [2020-12-22 10:02:24,100 INFO L78 Accepts]: Start accepts. Automaton has 52947 states and 75955 transitions. Word has length 111 [2020-12-22 10:02:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:24,100 INFO L481 AbstractCegarLoop]: Abstraction has 52947 states and 75955 transitions. [2020-12-22 10:02:24,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:02:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 52947 states and 75955 transitions. [2020-12-22 10:02:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:02:24,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:24,115 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:02:24,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:02:24,115 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:24,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:02:24,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:24,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974311158] [2020-12-22 10:02:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:02:24,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974311158] [2020-12-22 10:02:24,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:24,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:02:24,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803890284] [2020-12-22 10:02:24,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:02:24,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:24,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:02:24,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:02:24,326 INFO L87 Difference]: Start difference. First operand 52947 states and 75955 transitions. Second operand 3 states. [2020-12-22 10:02:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:27,436 INFO L93 Difference]: Finished difference Result 88760 states and 127580 transitions. [2020-12-22 10:02:27,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:02:27,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:02:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:27,477 INFO L225 Difference]: With dead ends: 88760 [2020-12-22 10:02:27,477 INFO L226 Difference]: Without dead ends: 37366 [2020-12-22 10:02:27,501 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 10:02:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37366 states. [2020-12-22 10:02:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37366 to 37364. [2020-12-22 10:02:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37364 states. [2020-12-22 10:02:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37364 states to 37364 states and 53721 transitions. [2020-12-22 10:02:30,309 INFO L78 Accepts]: Start accepts. Automaton has 37364 states and 53721 transitions. Word has length 113 [2020-12-22 10:02:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:30,310 INFO L481 AbstractCegarLoop]: Abstraction has 37364 states and 53721 transitions. [2020-12-22 10:02:30,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:02:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 37364 states and 53721 transitions. [2020-12-22 10:02:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:02:30,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:30,318 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:02:30,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:02:30,319 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:30,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:30,319 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:02:30,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:30,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289530617] [2020-12-22 10:02:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:02:30,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289530617] [2020-12-22 10:02:30,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:02:30,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:02:30,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662573826] [2020-12-22 10:02:30,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:02:30,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:30,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:02:30,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:02:30,454 INFO L87 Difference]: Start difference. First operand 37364 states and 53721 transitions. Second operand 8 states. [2020-12-22 10:02:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:02:35,386 INFO L93 Difference]: Finished difference Result 70402 states and 101344 transitions. [2020-12-22 10:02:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:02:35,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:02:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:02:35,450 INFO L225 Difference]: With dead ends: 70402 [2020-12-22 10:02:35,450 INFO L226 Difference]: Without dead ends: 64896 [2020-12-22 10:02:35,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:02:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64896 states. [2020-12-22 10:02:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64896 to 42868. [2020-12-22 10:02:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42868 states. [2020-12-22 10:02:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42868 states to 42868 states and 61593 transitions. [2020-12-22 10:02:38,961 INFO L78 Accepts]: Start accepts. Automaton has 42868 states and 61593 transitions. Word has length 113 [2020-12-22 10:02:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:02:38,961 INFO L481 AbstractCegarLoop]: Abstraction has 42868 states and 61593 transitions. [2020-12-22 10:02:38,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:02:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 42868 states and 61593 transitions. [2020-12-22 10:02:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:02:38,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:02:38,968 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:02:38,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:02:38,968 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:02:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:02:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:02:38,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:02:38,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831114391] [2020-12-22 10:02:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:02:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:02:39,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831114391] [2020-12-22 10:02:39,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059136874] [2020-12-22 10:02:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:02:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:02:39,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:02:39,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:02:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:02:40,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:02:40,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:02:40,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556471964] [2020-12-22 10:02:40,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:02:40,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:02:40,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:02:40,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:02:40,093 INFO L87 Difference]: Start difference. First operand 42868 states and 61593 transitions. Second operand 16 states. [2020-12-22 10:02:41,719 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 10:02:45,798 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:02:46,031 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:03:08,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:08,682 INFO L93 Difference]: Finished difference Result 308809 states and 435828 transitions. [2020-12-22 10:03:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:03:08,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:03:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:09,410 INFO L225 Difference]: With dead ends: 308809 [2020-12-22 10:03:09,410 INFO L226 Difference]: Without dead ends: 267527 [2020-12-22 10:03:09,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:03:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267527 states. [2020-12-22 10:03:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267527 to 134561. [2020-12-22 10:03:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134561 states. [2020-12-22 10:03:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134561 states to 134561 states and 187831 transitions. [2020-12-22 10:03:24,141 INFO L78 Accepts]: Start accepts. Automaton has 134561 states and 187831 transitions. Word has length 114 [2020-12-22 10:03:24,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:24,141 INFO L481 AbstractCegarLoop]: Abstraction has 134561 states and 187831 transitions. [2020-12-22 10:03:24,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:03:24,141 INFO L276 IsEmpty]: Start isEmpty. Operand 134561 states and 187831 transitions. [2020-12-22 10:03:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:03:24,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:24,160 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:03:24,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 10:03:24,374 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:24,375 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:03:24,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:24,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807261066] [2020-12-22 10:03:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:24,943 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-12-22 10:03:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:03:25,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807261066] [2020-12-22 10:03:25,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337252983] [2020-12-22 10:03:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:03:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:25,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:03:25,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:03:25,600 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:03:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:03:25,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:03:25,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:03:25,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795056724] [2020-12-22 10:03:25,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:03:25,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:25,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:03:25,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:03:25,946 INFO L87 Difference]: Start difference. First operand 134561 states and 187831 transitions. Second operand 22 states. [2020-12-22 10:03:26,502 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:03:28,645 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:03:28,879 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:03:29,177 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:03:29,881 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:03:30,072 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:03:30,386 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:03:32,681 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:03:33,568 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:03:35,092 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:03:35,241 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:03:36,581 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:03:37,664 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:03:38,055 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:03:39,500 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:03:39,972 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:03:40,222 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:03:41,021 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:03:41,671 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:03:42,557 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:03:42,692 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:03:42,863 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:03:45,511 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:03:45,966 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:03:46,590 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:03:47,096 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:03:54,748 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:03:55,082 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:03:55,424 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:03:55,598 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:03:55,838 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:03:56,251 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:03:56,418 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:03:56,648 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:03:57,220 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:03:57,387 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:03:57,610 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:03:57,780 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:03:57,985 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:03:58,193 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:03:58,480 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:03:58,621 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:03:58,814 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:03:58,982 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:03:59,213 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:04:00,315 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:04:00,483 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:04:00,750 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:04:00,899 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:04:01,410 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 10:04:01,636 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 10:04:02,353 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:04:02,494 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:04:02,691 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:04:02,993 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:04:03,279 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:04:18,048 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 10:04:18,412 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:04:18,604 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:04:19,000 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:04:19,170 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:04:19,389 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:04:19,626 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:04:20,854 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:04:21,169 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:04:21,355 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:04:21,508 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:04:21,759 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:04:21,965 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:04:22,363 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:04:23,039 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:04:23,213 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:04:23,356 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 10:04:23,584 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:04:25,064 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 10:04:25,313 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:04:25,668 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:04:26,108 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:04:26,422 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:04:27,205 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:04:29,677 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:04:51,095 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:04:51,277 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:04:52,352 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:04:52,792 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:04:52,965 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:04:54,030 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:04:57,666 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-12-22 10:04:57,845 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:04:58,071 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:04:58,284 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 10:04:58,556 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-22 10:04:58,786 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:04:59,019 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-12-22 10:04:59,316 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-12-22 10:05:01,666 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-12-22 10:05:02,022 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:05:02,250 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:05:02,670 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:05:03,548 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:05:03,796 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-12-22 10:05:04,031 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-22 10:05:04,333 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-12-22 10:05:07,262 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:05:07,613 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2020-12-22 10:05:07,854 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49