/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.3.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:38:20,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:38:20,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:38:20,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:38:20,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:38:20,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:38:20,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:38:20,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:38:20,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:38:20,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:38:20,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:38:20,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:38:20,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:38:20,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:38:20,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:38:20,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:38:20,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:38:20,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:38:20,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:38:20,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:38:20,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:38:21,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:38:21,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:38:21,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:38:21,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:38:21,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:38:21,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:38:21,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:38:21,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:38:21,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:38:21,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:38:21,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:38:21,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:38:21,103 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:38:21,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:38:21,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:38:21,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:38:21,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:38:21,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:38:21,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:38:21,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:38:21,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:38:21,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:38:21,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:38:21,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:38:21,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:38:21,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:38:21,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:38:21,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:38:21,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:38:21,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:38:21,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:38:21,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:38:21,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:38:21,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:38:21,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:38:21,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:38:21,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:38:21,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:38:21,549 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:38:21,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 09:38:21,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2267596cb/9385833ac041419fa4a6a05633082f2b/FLAG1aff4e11f [2020-12-22 09:38:22,564 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:38:22,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 09:38:22,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2267596cb/9385833ac041419fa4a6a05633082f2b/FLAG1aff4e11f [2020-12-22 09:38:23,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2267596cb/9385833ac041419fa4a6a05633082f2b [2020-12-22 09:38:23,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:38:23,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:38:23,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:38:23,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:38:23,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:38:23,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:38:23" (1/1) ... [2020-12-22 09:38:23,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238cf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:23, skipping insertion in model container [2020-12-22 09:38:23,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:38:23" (1/1) ... [2020-12-22 09:38:23,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:38:23,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:38:23,592 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c[6508,6521] [2020-12-22 09:38:23,697 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c[13326,13339] [2020-12-22 09:38:24,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:38:24,829 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:38:24,892 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c[6508,6521] [2020-12-22 09:38:24,966 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.3.ufo.UNBOUNDED.pals+Problem12_label04.c[13326,13339] [2020-12-22 09:38:25,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:38:25,703 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:38:25,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25 WrapperNode [2020-12-22 09:38:25,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:38:25,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:38:25,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:38:25,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:38:25,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:25,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:26,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:38:26,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:38:26,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:38:26,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:38:26,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:26,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:26,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:26,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:26,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:26,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:26,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (1/1) ... [2020-12-22 09:38:26,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:38:26,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:38:26,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:38:26,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:38:26,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (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 09:38:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:38:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:38:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:38:27,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:38:32,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:38:32,729 INFO L299 CfgBuilder]: Removed 32 assume(true) statements. [2020-12-22 09:38:32,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:38:32 BoogieIcfgContainer [2020-12-22 09:38:32,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:38:32,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:38:32,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:38:32,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:38:32,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:38:23" (1/3) ... [2020-12-22 09:38:32,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d488e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:38:32, skipping insertion in model container [2020-12-22 09:38:32,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:38:25" (2/3) ... [2020-12-22 09:38:32,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d488e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:38:32, skipping insertion in model container [2020-12-22 09:38:32,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:38:32" (3/3) ... [2020-12-22 09:38:32,742 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 09:38:32,749 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:38:32,756 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:38:32,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:38:32,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:38:32,813 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:38:32,813 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:38:32,813 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:38:32,813 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:38:32,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:38:32,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:38:32,814 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:38:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states. [2020-12-22 09:38:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 09:38:32,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:32,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:38:32,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:32,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:32,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1601385972, now seen corresponding path program 1 times [2020-12-22 09:38:32,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:32,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328624507] [2020-12-22 09:38:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:33,135 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 09:38:33,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328624507] [2020-12-22 09:38:33,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:33,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:38:33,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819471217] [2020-12-22 09:38:33,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 09:38:33,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:33,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 09:38:33,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:38:33,169 INFO L87 Difference]: Start difference. First operand 879 states. Second operand 2 states. [2020-12-22 09:38:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:33,273 INFO L93 Difference]: Finished difference Result 1734 states and 3294 transitions. [2020-12-22 09:38:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 09:38:33,275 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-12-22 09:38:33,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:33,330 INFO L225 Difference]: With dead ends: 1734 [2020-12-22 09:38:33,330 INFO L226 Difference]: Without dead ends: 813 [2020-12-22 09:38:33,350 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 09:38:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-12-22 09:38:33,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2020-12-22 09:38:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-12-22 09:38:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1535 transitions. [2020-12-22 09:38:33,499 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1535 transitions. Word has length 26 [2020-12-22 09:38:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:33,499 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1535 transitions. [2020-12-22 09:38:33,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 09:38:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1535 transitions. [2020-12-22 09:38:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 09:38:33,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:33,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:38:33,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:38:33,502 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:33,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:33,503 INFO L82 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2020-12-22 09:38:33,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:33,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680480245] [2020-12-22 09:38:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:33,624 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 09:38:33,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680480245] [2020-12-22 09:38:33,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:33,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:38:33,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671072579] [2020-12-22 09:38:33,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:38:33,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:33,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:38:33,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:38:33,631 INFO L87 Difference]: Start difference. First operand 813 states and 1535 transitions. Second operand 5 states. [2020-12-22 09:38:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:33,834 INFO L93 Difference]: Finished difference Result 854 states and 1597 transitions. [2020-12-22 09:38:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:38:33,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 09:38:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:33,842 INFO L225 Difference]: With dead ends: 854 [2020-12-22 09:38:33,842 INFO L226 Difference]: Without dead ends: 813 [2020-12-22 09:38:33,845 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 09:38:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-12-22 09:38:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2020-12-22 09:38:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-12-22 09:38:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1519 transitions. [2020-12-22 09:38:33,894 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1519 transitions. Word has length 26 [2020-12-22 09:38:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:33,895 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1519 transitions. [2020-12-22 09:38:33,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:38:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1519 transitions. [2020-12-22 09:38:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:38:33,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:33,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:38:33,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:38:33,908 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:33,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:33,911 INFO L82 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2020-12-22 09:38:33,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:33,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320595995] [2020-12-22 09:38:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:34,053 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 09:38:34,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320595995] [2020-12-22 09:38:34,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:34,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:38:34,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014986199] [2020-12-22 09:38:34,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:38:34,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:34,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:38:34,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:38:34,059 INFO L87 Difference]: Start difference. First operand 813 states and 1519 transitions. Second operand 3 states. [2020-12-22 09:38:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:34,099 INFO L93 Difference]: Finished difference Result 881 states and 1625 transitions. [2020-12-22 09:38:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:38:34,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 09:38:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:34,105 INFO L225 Difference]: With dead ends: 881 [2020-12-22 09:38:34,106 INFO L226 Difference]: Without dead ends: 844 [2020-12-22 09:38:34,107 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 09:38:34,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-12-22 09:38:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 842. [2020-12-22 09:38:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-12-22 09:38:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1565 transitions. [2020-12-22 09:38:34,133 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1565 transitions. Word has length 41 [2020-12-22 09:38:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:34,134 INFO L481 AbstractCegarLoop]: Abstraction has 842 states and 1565 transitions. [2020-12-22 09:38:34,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:38:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1565 transitions. [2020-12-22 09:38:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:38:34,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:34,135 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] [2020-12-22 09:38:34,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:38:34,136 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:34,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:34,136 INFO L82 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2020-12-22 09:38:34,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:34,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298136841] [2020-12-22 09:38:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:34,300 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 09:38:34,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298136841] [2020-12-22 09:38:34,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:34,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:38:34,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854497162] [2020-12-22 09:38:34,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:38:34,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:34,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:38:34,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:38:34,307 INFO L87 Difference]: Start difference. First operand 842 states and 1565 transitions. Second operand 3 states. [2020-12-22 09:38:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:34,350 INFO L93 Difference]: Finished difference Result 962 states and 1753 transitions. [2020-12-22 09:38:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:38:34,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 09:38:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:34,356 INFO L225 Difference]: With dead ends: 962 [2020-12-22 09:38:34,357 INFO L226 Difference]: Without dead ends: 896 [2020-12-22 09:38:34,358 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 09:38:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-12-22 09:38:34,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 894. [2020-12-22 09:38:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-12-22 09:38:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1646 transitions. [2020-12-22 09:38:34,389 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1646 transitions. Word has length 41 [2020-12-22 09:38:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:34,389 INFO L481 AbstractCegarLoop]: Abstraction has 894 states and 1646 transitions. [2020-12-22 09:38:34,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:38:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1646 transitions. [2020-12-22 09:38:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:38:34,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:34,391 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] [2020-12-22 09:38:34,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:38:34,391 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:34,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:34,392 INFO L82 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2020-12-22 09:38:34,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:34,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236183423] [2020-12-22 09:38:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:34,505 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 09:38:34,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236183423] [2020-12-22 09:38:34,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:34,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:38:34,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699321663] [2020-12-22 09:38:34,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:38:34,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:34,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:38:34,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:38:34,509 INFO L87 Difference]: Start difference. First operand 894 states and 1646 transitions. Second operand 5 states. [2020-12-22 09:38:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:34,733 INFO L93 Difference]: Finished difference Result 1602 states and 2756 transitions. [2020-12-22 09:38:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:38:34,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 09:38:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:34,746 INFO L225 Difference]: With dead ends: 1602 [2020-12-22 09:38:34,746 INFO L226 Difference]: Without dead ends: 1484 [2020-12-22 09:38:34,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:38:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-12-22 09:38:34,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1010. [2020-12-22 09:38:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-12-22 09:38:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1822 transitions. [2020-12-22 09:38:34,800 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1822 transitions. Word has length 41 [2020-12-22 09:38:34,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:34,802 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1822 transitions. [2020-12-22 09:38:34,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:38:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1822 transitions. [2020-12-22 09:38:34,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:38:34,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:34,804 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] [2020-12-22 09:38:34,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:38:34,804 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2020-12-22 09:38:34,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:34,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324871810] [2020-12-22 09:38:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:34,896 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 09:38:34,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324871810] [2020-12-22 09:38:34,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:34,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:38:34,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121420151] [2020-12-22 09:38:34,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:38:34,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:38:34,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:38:34,899 INFO L87 Difference]: Start difference. First operand 1010 states and 1822 transitions. Second operand 3 states. [2020-12-22 09:38:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:34,960 INFO L93 Difference]: Finished difference Result 1434 states and 2468 transitions. [2020-12-22 09:38:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:38:34,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 09:38:34,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:34,968 INFO L225 Difference]: With dead ends: 1434 [2020-12-22 09:38:34,968 INFO L226 Difference]: Without dead ends: 1200 [2020-12-22 09:38:34,970 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 09:38:34,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-12-22 09:38:35,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1190. [2020-12-22 09:38:35,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-12-22 09:38:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 2078 transitions. [2020-12-22 09:38:35,013 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 2078 transitions. Word has length 43 [2020-12-22 09:38:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:35,013 INFO L481 AbstractCegarLoop]: Abstraction has 1190 states and 2078 transitions. [2020-12-22 09:38:35,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:38:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 2078 transitions. [2020-12-22 09:38:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:38:35,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:35,014 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] [2020-12-22 09:38:35,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:38:35,015 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:35,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2020-12-22 09:38:35,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:35,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829202374] [2020-12-22 09:38:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:35,131 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 09:38:35,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829202374] [2020-12-22 09:38:35,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:35,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:38:35,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30123093] [2020-12-22 09:38:35,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:38:35,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:35,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:38:35,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:38:35,134 INFO L87 Difference]: Start difference. First operand 1190 states and 2078 transitions. Second operand 5 states. [2020-12-22 09:38:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:35,250 INFO L93 Difference]: Finished difference Result 1606 states and 2696 transitions. [2020-12-22 09:38:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:38:35,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 09:38:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:35,258 INFO L225 Difference]: With dead ends: 1606 [2020-12-22 09:38:35,258 INFO L226 Difference]: Without dead ends: 1192 [2020-12-22 09:38:35,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:38:35,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-12-22 09:38:35,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1190. [2020-12-22 09:38:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-12-22 09:38:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 2070 transitions. [2020-12-22 09:38:35,308 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 2070 transitions. Word has length 43 [2020-12-22 09:38:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:35,309 INFO L481 AbstractCegarLoop]: Abstraction has 1190 states and 2070 transitions. [2020-12-22 09:38:35,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:38:35,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 2070 transitions. [2020-12-22 09:38:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 09:38:35,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:35,310 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] [2020-12-22 09:38:35,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:38:35,310 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:35,311 INFO L82 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2020-12-22 09:38:35,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:35,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524858227] [2020-12-22 09:38:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:35,420 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 09:38:35,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524858227] [2020-12-22 09:38:35,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:35,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:38:35,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112019309] [2020-12-22 09:38:35,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:38:35,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:38:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:38:35,423 INFO L87 Difference]: Start difference. First operand 1190 states and 2070 transitions. Second operand 8 states. [2020-12-22 09:38:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:35,738 INFO L93 Difference]: Finished difference Result 1516 states and 2534 transitions. [2020-12-22 09:38:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:38:35,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-12-22 09:38:35,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:35,748 INFO L225 Difference]: With dead ends: 1516 [2020-12-22 09:38:35,748 INFO L226 Difference]: Without dead ends: 1514 [2020-12-22 09:38:35,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 09:38:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-12-22 09:38:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1214. [2020-12-22 09:38:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2020-12-22 09:38:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 2090 transitions. [2020-12-22 09:38:35,817 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 2090 transitions. Word has length 44 [2020-12-22 09:38:35,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:35,818 INFO L481 AbstractCegarLoop]: Abstraction has 1214 states and 2090 transitions. [2020-12-22 09:38:35,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:38:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 2090 transitions. [2020-12-22 09:38:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 09:38:35,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:35,819 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] [2020-12-22 09:38:35,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:38:35,820 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1900121563, now seen corresponding path program 1 times [2020-12-22 09:38:35,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:35,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708515385] [2020-12-22 09:38:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:35,892 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 09:38:35,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708515385] [2020-12-22 09:38:35,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:35,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:38:35,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814004307] [2020-12-22 09:38:35,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:38:35,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:35,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:38:35,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:38:35,897 INFO L87 Difference]: Start difference. First operand 1214 states and 2090 transitions. Second operand 3 states. [2020-12-22 09:38:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:35,976 INFO L93 Difference]: Finished difference Result 1669 states and 2752 transitions. [2020-12-22 09:38:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:38:35,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-12-22 09:38:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:35,986 INFO L225 Difference]: With dead ends: 1669 [2020-12-22 09:38:35,987 INFO L226 Difference]: Without dead ends: 1410 [2020-12-22 09:38:35,988 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 09:38:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2020-12-22 09:38:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1408. [2020-12-22 09:38:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2020-12-22 09:38:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2360 transitions. [2020-12-22 09:38:36,068 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2360 transitions. Word has length 45 [2020-12-22 09:38:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:36,073 INFO L481 AbstractCegarLoop]: Abstraction has 1408 states and 2360 transitions. [2020-12-22 09:38:36,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:38:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2360 transitions. [2020-12-22 09:38:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 09:38:36,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:36,075 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] [2020-12-22 09:38:36,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:38:36,075 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:36,076 INFO L82 PathProgramCache]: Analyzing trace with hash -584608113, now seen corresponding path program 1 times [2020-12-22 09:38:36,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:36,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482066927] [2020-12-22 09:38:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:36,250 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 09:38:36,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482066927] [2020-12-22 09:38:36,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:36,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:38:36,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927324916] [2020-12-22 09:38:36,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:38:36,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:36,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:38:36,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:38:36,254 INFO L87 Difference]: Start difference. First operand 1408 states and 2360 transitions. Second operand 4 states. [2020-12-22 09:38:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:47,263 INFO L93 Difference]: Finished difference Result 3663 states and 6669 transitions. [2020-12-22 09:38:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:38:47,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 09:38:47,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:47,283 INFO L225 Difference]: With dead ends: 3663 [2020-12-22 09:38:47,283 INFO L226 Difference]: Without dead ends: 2910 [2020-12-22 09:38:47,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:38:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-12-22 09:38:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2020-12-22 09:38:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2910 states. [2020-12-22 09:38:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4336 transitions. [2020-12-22 09:38:47,394 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4336 transitions. Word has length 61 [2020-12-22 09:38:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:47,395 INFO L481 AbstractCegarLoop]: Abstraction has 2910 states and 4336 transitions. [2020-12-22 09:38:47,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:38:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4336 transitions. [2020-12-22 09:38:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 09:38:47,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:47,396 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] [2020-12-22 09:38:47,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:38:47,397 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:47,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:47,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1836022441, now seen corresponding path program 1 times [2020-12-22 09:38:47,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:47,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932422227] [2020-12-22 09:38:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 09:38:47,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932422227] [2020-12-22 09:38:47,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:47,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:38:47,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837756954] [2020-12-22 09:38:47,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:38:47,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:47,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:38:47,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:38:47,470 INFO L87 Difference]: Start difference. First operand 2910 states and 4336 transitions. Second operand 5 states. [2020-12-22 09:38:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:47,724 INFO L93 Difference]: Finished difference Result 4938 states and 7212 transitions. [2020-12-22 09:38:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:38:47,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 09:38:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:47,748 INFO L225 Difference]: With dead ends: 4938 [2020-12-22 09:38:47,748 INFO L226 Difference]: Without dead ends: 4308 [2020-12-22 09:38:47,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:38:47,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2020-12-22 09:38:47,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3538. [2020-12-22 09:38:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3538 states. [2020-12-22 09:38:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5220 transitions. [2020-12-22 09:38:47,928 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5220 transitions. Word has length 63 [2020-12-22 09:38:47,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:47,928 INFO L481 AbstractCegarLoop]: Abstraction has 3538 states and 5220 transitions. [2020-12-22 09:38:47,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:38:47,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5220 transitions. [2020-12-22 09:38:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 09:38:47,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:47,930 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] [2020-12-22 09:38:47,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:38:47,930 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:47,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:47,931 INFO L82 PathProgramCache]: Analyzing trace with hash 67239625, now seen corresponding path program 1 times [2020-12-22 09:38:47,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:47,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389036816] [2020-12-22 09:38:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 09:38:48,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389036816] [2020-12-22 09:38:48,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:48,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:38:48,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377847342] [2020-12-22 09:38:48,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:38:48,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:48,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:38:48,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:38:48,031 INFO L87 Difference]: Start difference. First operand 3538 states and 5220 transitions. Second operand 5 states. [2020-12-22 09:38:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:48,332 INFO L93 Difference]: Finished difference Result 5566 states and 8096 transitions. [2020-12-22 09:38:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:38:48,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 09:38:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:48,360 INFO L225 Difference]: With dead ends: 5566 [2020-12-22 09:38:48,360 INFO L226 Difference]: Without dead ends: 4936 [2020-12-22 09:38:48,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:38:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2020-12-22 09:38:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4482. [2020-12-22 09:38:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4482 states. [2020-12-22 09:38:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6536 transitions. [2020-12-22 09:38:48,628 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6536 transitions. Word has length 63 [2020-12-22 09:38:48,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:48,628 INFO L481 AbstractCegarLoop]: Abstraction has 4482 states and 6536 transitions. [2020-12-22 09:38:48,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:38:48,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6536 transitions. [2020-12-22 09:38:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:38:48,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:48,631 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] [2020-12-22 09:38:48,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:38:48,631 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:48,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2131767521, now seen corresponding path program 1 times [2020-12-22 09:38:48,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:48,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19701776] [2020-12-22 09:38:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:48,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19701776] [2020-12-22 09:38:48,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:48,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:38:48,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203400706] [2020-12-22 09:38:48,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:38:48,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:48,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:38:48,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:38:48,708 INFO L87 Difference]: Start difference. First operand 4482 states and 6536 transitions. Second operand 3 states. [2020-12-22 09:38:48,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:48,877 INFO L93 Difference]: Finished difference Result 6075 states and 8803 transitions. [2020-12-22 09:38:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:38:48,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 09:38:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:48,914 INFO L225 Difference]: With dead ends: 6075 [2020-12-22 09:38:48,914 INFO L226 Difference]: Without dead ends: 3873 [2020-12-22 09:38:48,919 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 09:38:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2020-12-22 09:38:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3871. [2020-12-22 09:38:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3871 states. [2020-12-22 09:38:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 5676 transitions. [2020-12-22 09:38:49,109 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 5676 transitions. Word has length 65 [2020-12-22 09:38:49,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:49,109 INFO L481 AbstractCegarLoop]: Abstraction has 3871 states and 5676 transitions. [2020-12-22 09:38:49,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:38:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 5676 transitions. [2020-12-22 09:38:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:38:49,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:49,118 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:38:49,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:38:49,118 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:49,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1187468114, now seen corresponding path program 1 times [2020-12-22 09:38:49,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:49,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49472218] [2020-12-22 09:38:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:38:49,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49472218] [2020-12-22 09:38:49,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:38:49,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:38:49,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275894151] [2020-12-22 09:38:49,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:38:49,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:49,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:38:49,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:38:49,207 INFO L87 Difference]: Start difference. First operand 3871 states and 5676 transitions. Second operand 5 states. [2020-12-22 09:38:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:49,561 INFO L93 Difference]: Finished difference Result 5223 states and 7600 transitions. [2020-12-22 09:38:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:38:49,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-12-22 09:38:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:49,576 INFO L225 Difference]: With dead ends: 5223 [2020-12-22 09:38:49,577 INFO L226 Difference]: Without dead ends: 4773 [2020-12-22 09:38:49,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:38:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2020-12-22 09:38:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4319. [2020-12-22 09:38:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4319 states. [2020-12-22 09:38:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4319 states to 4319 states and 6308 transitions. [2020-12-22 09:38:49,846 INFO L78 Accepts]: Start accepts. Automaton has 4319 states and 6308 transitions. Word has length 65 [2020-12-22 09:38:49,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:49,847 INFO L481 AbstractCegarLoop]: Abstraction has 4319 states and 6308 transitions. [2020-12-22 09:38:49,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:38:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4319 states and 6308 transitions. [2020-12-22 09:38:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:38:49,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:49,849 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:38:49,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:38:49,850 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:49,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1662229482, now seen corresponding path program 1 times [2020-12-22 09:38:49,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:49,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883797277] [2020-12-22 09:38:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:50,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883797277] [2020-12-22 09:38:50,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858642714] [2020-12-22 09:38:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 09:38:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:50,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:38:50,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:38:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:38:50,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:38:50,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 09:38:50,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474678132] [2020-12-22 09:38:50,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 09:38:50,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:50,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 09:38:50,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-22 09:38:50,525 INFO L87 Difference]: Start difference. First operand 4319 states and 6308 transitions. Second operand 12 states. [2020-12-22 09:38:52,774 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-12-22 09:38:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:53,688 INFO L93 Difference]: Finished difference Result 13613 states and 19064 transitions. [2020-12-22 09:38:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-22 09:38:53,689 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-22 09:38:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:53,715 INFO L225 Difference]: With dead ends: 13613 [2020-12-22 09:38:53,716 INFO L226 Difference]: Without dead ends: 11595 [2020-12-22 09:38:53,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 09:38:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2020-12-22 09:38:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 8331. [2020-12-22 09:38:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8331 states. [2020-12-22 09:38:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 11585 transitions. [2020-12-22 09:38:54,422 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 11585 transitions. Word has length 66 [2020-12-22 09:38:54,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:54,422 INFO L481 AbstractCegarLoop]: Abstraction has 8331 states and 11585 transitions. [2020-12-22 09:38:54,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 09:38:54,422 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 11585 transitions. [2020-12-22 09:38:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:38:54,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:54,424 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:38:54,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 09:38:54,638 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:54,639 INFO L82 PathProgramCache]: Analyzing trace with hash -44763738, now seen corresponding path program 1 times [2020-12-22 09:38:54,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:54,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681633796] [2020-12-22 09:38:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:54,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681633796] [2020-12-22 09:38:54,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259639940] [2020-12-22 09:38:54,873 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 09:38:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:38:54,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:38:55,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:38:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:55,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:38:55,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:38:55,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351268546] [2020-12-22 09:38:55,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:38:55,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:55,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:38:55,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:38:55,588 INFO L87 Difference]: Start difference. First operand 8331 states and 11585 transitions. Second operand 17 states. [2020-12-22 09:38:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:59,801 INFO L93 Difference]: Finished difference Result 32202 states and 43643 transitions. [2020-12-22 09:38:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 09:38:59,802 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-12-22 09:38:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:59,867 INFO L225 Difference]: With dead ends: 32202 [2020-12-22 09:38:59,868 INFO L226 Difference]: Without dead ends: 27291 [2020-12-22 09:38:59,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 09:38:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27291 states. [2020-12-22 09:39:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27291 to 16004. [2020-12-22 09:39:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16004 states. [2020-12-22 09:39:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16004 states to 16004 states and 21871 transitions. [2020-12-22 09:39:01,863 INFO L78 Accepts]: Start accepts. Automaton has 16004 states and 21871 transitions. Word has length 67 [2020-12-22 09:39:01,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:01,864 INFO L481 AbstractCegarLoop]: Abstraction has 16004 states and 21871 transitions. [2020-12-22 09:39:01,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:39:01,864 INFO L276 IsEmpty]: Start isEmpty. Operand 16004 states and 21871 transitions. [2020-12-22 09:39:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:39:01,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:01,866 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:39:02,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 09:39:02,080 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2066736808, now seen corresponding path program 1 times [2020-12-22 09:39:02,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:02,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992578296] [2020-12-22 09:39:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:02,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992578296] [2020-12-22 09:39:02,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281170918] [2020-12-22 09:39:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:39:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:02,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:39:02,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:39:02,558 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:39:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:02,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:39:02,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:39:02,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915593663] [2020-12-22 09:39:02,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:39:02,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:02,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:39:02,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:39:02,905 INFO L87 Difference]: Start difference. First operand 16004 states and 21871 transitions. Second operand 17 states. [2020-12-22 09:39:04,804 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-12-22 09:39:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:10,355 INFO L93 Difference]: Finished difference Result 77443 states and 104527 transitions. [2020-12-22 09:39:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 09:39:10,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-12-22 09:39:10,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:10,541 INFO L225 Difference]: With dead ends: 77443 [2020-12-22 09:39:10,542 INFO L226 Difference]: Without dead ends: 66013 [2020-12-22 09:39:10,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=591, Invalid=1665, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:39:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66013 states. [2020-12-22 09:39:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66013 to 34055. [2020-12-22 09:39:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34055 states. [2020-12-22 09:39:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34055 states to 34055 states and 46139 transitions. [2020-12-22 09:39:14,328 INFO L78 Accepts]: Start accepts. Automaton has 34055 states and 46139 transitions. Word has length 67 [2020-12-22 09:39:14,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:14,329 INFO L481 AbstractCegarLoop]: Abstraction has 34055 states and 46139 transitions. [2020-12-22 09:39:14,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:39:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand 34055 states and 46139 transitions. [2020-12-22 09:39:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:39:14,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:14,332 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] [2020-12-22 09:39:14,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 09:39:14,538 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:14,539 INFO L82 PathProgramCache]: Analyzing trace with hash -848751410, now seen corresponding path program 1 times [2020-12-22 09:39:14,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:14,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328341375] [2020-12-22 09:39:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:14,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328341375] [2020-12-22 09:39:14,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:14,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:39:14,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058289728] [2020-12-22 09:39:14,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:39:14,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:14,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:39:14,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:14,599 INFO L87 Difference]: Start difference. First operand 34055 states and 46139 transitions. Second operand 3 states. [2020-12-22 09:39:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:16,847 INFO L93 Difference]: Finished difference Result 49273 states and 66748 transitions. [2020-12-22 09:39:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:39:16,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 09:39:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:16,897 INFO L225 Difference]: With dead ends: 49273 [2020-12-22 09:39:16,898 INFO L226 Difference]: Without dead ends: 20761 [2020-12-22 09:39:16,937 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 09:39:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20761 states. [2020-12-22 09:39:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20761 to 20525. [2020-12-22 09:39:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20525 states. [2020-12-22 09:39:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20525 states to 20525 states and 27301 transitions. [2020-12-22 09:39:19,097 INFO L78 Accepts]: Start accepts. Automaton has 20525 states and 27301 transitions. Word has length 67 [2020-12-22 09:39:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:19,097 INFO L481 AbstractCegarLoop]: Abstraction has 20525 states and 27301 transitions. [2020-12-22 09:39:19,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:39:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 20525 states and 27301 transitions. [2020-12-22 09:39:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:39:19,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:19,100 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] [2020-12-22 09:39:19,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:39:19,100 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:19,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash -2096259026, now seen corresponding path program 1 times [2020-12-22 09:39:19,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:19,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997655613] [2020-12-22 09:39:19,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:19,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997655613] [2020-12-22 09:39:19,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:19,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:39:19,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942028834] [2020-12-22 09:39:19,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:39:19,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:19,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:39:19,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:19,150 INFO L87 Difference]: Start difference. First operand 20525 states and 27301 transitions. Second operand 3 states. [2020-12-22 09:39:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:20,248 INFO L93 Difference]: Finished difference Result 30427 states and 40432 transitions. [2020-12-22 09:39:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:39:20,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 09:39:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:20,278 INFO L225 Difference]: With dead ends: 30427 [2020-12-22 09:39:20,278 INFO L226 Difference]: Without dead ends: 14415 [2020-12-22 09:39:20,296 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 09:39:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14415 states. [2020-12-22 09:39:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14415 to 14413. [2020-12-22 09:39:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14413 states. [2020-12-22 09:39:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14413 states to 14413 states and 18924 transitions. [2020-12-22 09:39:21,615 INFO L78 Accepts]: Start accepts. Automaton has 14413 states and 18924 transitions. Word has length 67 [2020-12-22 09:39:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:21,616 INFO L481 AbstractCegarLoop]: Abstraction has 14413 states and 18924 transitions. [2020-12-22 09:39:21,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:39:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 14413 states and 18924 transitions. [2020-12-22 09:39:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:39:21,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:21,618 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:39:21,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:39:21,619 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:21,619 INFO L82 PathProgramCache]: Analyzing trace with hash 873869654, now seen corresponding path program 1 times [2020-12-22 09:39:21,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:21,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640518533] [2020-12-22 09:39:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 09:39:21,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640518533] [2020-12-22 09:39:21,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:21,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:21,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584560834] [2020-12-22 09:39:21,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:39:21,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:21,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:39:21,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:39:21,745 INFO L87 Difference]: Start difference. First operand 14413 states and 18924 transitions. Second operand 6 states. [2020-12-22 09:39:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:22,912 INFO L93 Difference]: Finished difference Result 24176 states and 31476 transitions. [2020-12-22 09:39:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:39:22,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:39:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:22,932 INFO L225 Difference]: With dead ends: 24176 [2020-12-22 09:39:22,932 INFO L226 Difference]: Without dead ends: 12124 [2020-12-22 09:39:22,945 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 09:39:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12124 states. [2020-12-22 09:39:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12124 to 12124. [2020-12-22 09:39:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12124 states. [2020-12-22 09:39:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12124 states to 12124 states and 15805 transitions. [2020-12-22 09:39:24,057 INFO L78 Accepts]: Start accepts. Automaton has 12124 states and 15805 transitions. Word has length 67 [2020-12-22 09:39:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:24,057 INFO L481 AbstractCegarLoop]: Abstraction has 12124 states and 15805 transitions. [2020-12-22 09:39:24,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:39:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12124 states and 15805 transitions. [2020-12-22 09:39:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:39:24,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:24,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:39:24,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:39:24,059 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1198871190, now seen corresponding path program 1 times [2020-12-22 09:39:24,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:24,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590785588] [2020-12-22 09:39:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 09:39:24,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590785588] [2020-12-22 09:39:24,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:24,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:24,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783520108] [2020-12-22 09:39:24,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:39:24,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:24,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:39:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:39:24,146 INFO L87 Difference]: Start difference. First operand 12124 states and 15805 transitions. Second operand 6 states. [2020-12-22 09:39:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:25,123 INFO L93 Difference]: Finished difference Result 19293 states and 24868 transitions. [2020-12-22 09:39:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:39:25,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:39:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:25,135 INFO L225 Difference]: With dead ends: 19293 [2020-12-22 09:39:25,135 INFO L226 Difference]: Without dead ends: 9564 [2020-12-22 09:39:25,147 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 09:39:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9564 states. [2020-12-22 09:39:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9564 to 9564. [2020-12-22 09:39:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9564 states. [2020-12-22 09:39:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9564 states to 9564 states and 12457 transitions. [2020-12-22 09:39:25,938 INFO L78 Accepts]: Start accepts. Automaton has 9564 states and 12457 transitions. Word has length 67 [2020-12-22 09:39:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:25,938 INFO L481 AbstractCegarLoop]: Abstraction has 9564 states and 12457 transitions. [2020-12-22 09:39:25,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:39:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 9564 states and 12457 transitions. [2020-12-22 09:39:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:39:25,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:25,939 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:39:25,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:39:25,939 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:25,940 INFO L82 PathProgramCache]: Analyzing trace with hash -49807498, now seen corresponding path program 1 times [2020-12-22 09:39:25,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:25,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119670561] [2020-12-22 09:39:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 09:39:26,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119670561] [2020-12-22 09:39:26,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:26,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900319834] [2020-12-22 09:39:26,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:39:26,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:26,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:39:26,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:39:26,037 INFO L87 Difference]: Start difference. First operand 9564 states and 12457 transitions. Second operand 6 states. [2020-12-22 09:39:26,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:26,660 INFO L93 Difference]: Finished difference Result 15114 states and 19402 transitions. [2020-12-22 09:39:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:39:26,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:39:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:26,679 INFO L225 Difference]: With dead ends: 15114 [2020-12-22 09:39:26,679 INFO L226 Difference]: Without dead ends: 7867 [2020-12-22 09:39:26,688 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 09:39:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7867 states. [2020-12-22 09:39:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7867 to 7867. [2020-12-22 09:39:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7867 states. [2020-12-22 09:39:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7867 states to 7867 states and 10311 transitions. [2020-12-22 09:39:27,457 INFO L78 Accepts]: Start accepts. Automaton has 7867 states and 10311 transitions. Word has length 67 [2020-12-22 09:39:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:27,458 INFO L481 AbstractCegarLoop]: Abstraction has 7867 states and 10311 transitions. [2020-12-22 09:39:27,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:39:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7867 states and 10311 transitions. [2020-12-22 09:39:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:39:27,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:27,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:39:27,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 09:39:27,460 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:27,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1937529655, now seen corresponding path program 1 times [2020-12-22 09:39:27,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:27,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776859661] [2020-12-22 09:39:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:28,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776859661] [2020-12-22 09:39:28,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397721774] [2020-12-22 09:39:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:39:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:28,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 09:39:28,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:39:28,965 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 09:39:28,982 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:39:28,986 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:39:28,992 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:39:29,244 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 28 [2020-12-22 09:39:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:29,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:39:29,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2020-12-22 09:39:29,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057420066] [2020-12-22 09:39:29,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 09:39:29,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:29,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 09:39:29,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-12-22 09:39:29,512 INFO L87 Difference]: Start difference. First operand 7867 states and 10311 transitions. Second operand 26 states. [2020-12-22 09:39:30,112 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-12-22 09:39:30,280 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-12-22 09:39:30,647 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-12-22 09:39:30,962 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-12-22 09:39:31,264 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-12-22 09:39:31,581 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:39:31,856 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:39:32,148 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:39:32,443 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-12-22 09:39:32,753 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 09:39:32,982 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 09:39:33,163 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-12-22 09:39:33,370 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 09:39:33,932 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-22 09:39:34,389 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-22 09:39:34,589 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-12-22 09:39:34,927 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-12-22 09:39:35,258 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 09:39:35,606 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 09:39:35,776 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-22 09:39:35,935 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 09:39:36,258 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-22 09:39:36,691 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-12-22 09:39:37,058 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-12-22 09:39:37,511 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 09:39:37,848 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-12-22 09:39:38,100 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-12-22 09:39:38,421 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 09:39:38,668 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 09:39:38,902 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-12-22 09:39:39,207 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-12-22 09:39:39,393 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-12-22 09:39:39,844 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-12-22 09:39:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:42,136 INFO L93 Difference]: Finished difference Result 13998 states and 18004 transitions. [2020-12-22 09:39:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-12-22 09:39:42,137 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 68 [2020-12-22 09:39:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:42,154 INFO L225 Difference]: With dead ends: 13998 [2020-12-22 09:39:42,154 INFO L226 Difference]: Without dead ends: 11093 [2020-12-22 09:39:42,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1297, Invalid=6359, Unknown=0, NotChecked=0, Total=7656 [2020-12-22 09:39:42,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11093 states. [2020-12-22 09:39:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11093 to 7029. [2020-12-22 09:39:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2020-12-22 09:39:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 9330 transitions. [2020-12-22 09:39:42,920 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 9330 transitions. Word has length 68 [2020-12-22 09:39:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:42,920 INFO L481 AbstractCegarLoop]: Abstraction has 7029 states and 9330 transitions. [2020-12-22 09:39:42,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 09:39:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 9330 transitions. [2020-12-22 09:39:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:39:42,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:42,921 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:39:43,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:39:43,127 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash 75217277, now seen corresponding path program 1 times [2020-12-22 09:39:43,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:43,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381607197] [2020-12-22 09:39:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:44,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381607197] [2020-12-22 09:39:44,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116562444] [2020-12-22 09:39:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:39:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:44,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 09:39:44,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:39:46,543 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 09:39:46,573 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 2, 1] term [2020-12-22 09:39:46,573 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:39:46,578 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 09:39:47,229 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44