/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/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:48:54,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:48:54,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:48:54,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:48:54,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:48:54,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:48:54,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:48:54,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:48:54,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:48:54,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:48:54,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:48:54,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:48:54,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:48:54,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:48:54,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:48:54,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:48:54,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:48:54,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:48:54,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:48:54,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:48:54,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:48:54,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:48:54,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:48:54,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:48:54,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:48:54,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:48:54,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:48:54,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:48:54,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:48:54,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:48:54,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:48:54,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:48:54,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:48:54,874 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:48:54,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:48:54,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:48:54,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:48:54,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:48:54,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:48:54,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:48:54,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:48:54,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:48:54,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:48:54,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:48:54,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:48:54,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:48:54,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:48:54,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:48:54,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:48:54,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:48:54,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:48:54,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:48:54,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:48:54,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:48:54,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:48:55,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:48:55,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:48:55,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:48:55,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:48:55,342 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:48:55,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:48:55,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28c47c24/48c17457e08346c9babcfd9eee21f9dd/FLAGe7fc5022f [2020-12-22 08:48:56,159 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:48:56,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:48:56,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28c47c24/48c17457e08346c9babcfd9eee21f9dd/FLAGe7fc5022f [2020-12-22 08:48:56,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28c47c24/48c17457e08346c9babcfd9eee21f9dd [2020-12-22 08:48:56,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:48:56,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:48:56,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:48:56,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:48:56,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:48:56,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:48:56" (1/1) ... [2020-12-22 08:48:56,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c4d78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:56, skipping insertion in model container [2020-12-22 08:48:56,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:48:56" (1/1) ... [2020-12-22 08:48:56,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:48:56,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:48:56,822 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/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7430,7443] [2020-12-22 08:48:56,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:48:56,937 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:48:57,024 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/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7430,7443] [2020-12-22 08:48:57,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:48:57,177 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:48:57,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57 WrapperNode [2020-12-22 08:48:57,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:48:57,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:48:57,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:48:57,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:48:57,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:48:57,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:48:57,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:48:57,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:48:57,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (1/1) ... [2020-12-22 08:48:57,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:48:57,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:48:57,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:48:57,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:48:57,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (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 08:48:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:48:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:48:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:48:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:48:58,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:48:58,725 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:48:58,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:48:58 BoogieIcfgContainer [2020-12-22 08:48:58,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:48:58,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:48:58,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:48:58,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:48:58,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:48:56" (1/3) ... [2020-12-22 08:48:58,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a400bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:48:58, skipping insertion in model container [2020-12-22 08:48:58,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:48:57" (2/3) ... [2020-12-22 08:48:58,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a400bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:48:58, skipping insertion in model container [2020-12-22 08:48:58,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:48:58" (3/3) ... [2020-12-22 08:48:58,738 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:48:58,745 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:48:58,760 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:48:58,785 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:48:58,827 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:48:58,827 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:48:58,828 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:48:58,828 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:48:58,828 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:48:58,828 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:48:58,828 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:48:58,829 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:48:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-12-22 08:48:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:48:58,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:48:58,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:48:58,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:48:58,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:48:58,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1577999170, now seen corresponding path program 1 times [2020-12-22 08:48:58,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:48:58,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250941857] [2020-12-22 08:48:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:48:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:48:59,430 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 08:48:59,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250941857] [2020-12-22 08:48:59,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:48:59,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:48:59,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232884434] [2020-12-22 08:48:59,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:48:59,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:48:59,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:48:59,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:48:59,460 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-12-22 08:48:59,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:48:59,612 INFO L93 Difference]: Finished difference Result 294 states and 487 transitions. [2020-12-22 08:48:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:48:59,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:48:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:48:59,632 INFO L225 Difference]: With dead ends: 294 [2020-12-22 08:48:59,633 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 08:48:59,637 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 08:48:59,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 08:48:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2020-12-22 08:48:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-22 08:48:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 322 transitions. [2020-12-22 08:48:59,712 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 322 transitions. Word has length 75 [2020-12-22 08:48:59,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:48:59,713 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 322 transitions. [2020-12-22 08:48:59,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:48:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 322 transitions. [2020-12-22 08:48:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:48:59,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:48:59,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:48:59,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:48:59,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:48:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:48:59,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1882204162, now seen corresponding path program 1 times [2020-12-22 08:48:59,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:48:59,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76813428] [2020-12-22 08:48:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:48:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:48:59,982 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 08:48:59,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76813428] [2020-12-22 08:48:59,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:48:59,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:48:59,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885834811] [2020-12-22 08:48:59,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:48:59,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:48:59,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:48:59,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:48:59,988 INFO L87 Difference]: Start difference. First operand 222 states and 322 transitions. Second operand 6 states. [2020-12-22 08:49:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:00,336 INFO L93 Difference]: Finished difference Result 558 states and 844 transitions. [2020-12-22 08:49:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:49:00,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 08:49:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:00,375 INFO L225 Difference]: With dead ends: 558 [2020-12-22 08:49:00,376 INFO L226 Difference]: Without dead ends: 373 [2020-12-22 08:49:00,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:49:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-22 08:49:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2020-12-22 08:49:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-12-22 08:49:00,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 556 transitions. [2020-12-22 08:49:00,491 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 556 transitions. Word has length 77 [2020-12-22 08:49:00,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:00,492 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 556 transitions. [2020-12-22 08:49:00,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:49:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 556 transitions. [2020-12-22 08:49:00,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:49:00,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:00,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:00,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:49:00,497 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:00,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:00,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2128024995, now seen corresponding path program 1 times [2020-12-22 08:49:00,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:00,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682565220] [2020-12-22 08:49:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:00,781 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 08:49:00,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682565220] [2020-12-22 08:49:00,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:00,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:49:00,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077871792] [2020-12-22 08:49:00,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:49:00,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:00,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:49:00,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:49:00,792 INFO L87 Difference]: Start difference. First operand 371 states and 556 transitions. Second operand 6 states. [2020-12-22 08:49:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:01,060 INFO L93 Difference]: Finished difference Result 917 states and 1412 transitions. [2020-12-22 08:49:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:49:01,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 08:49:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:01,066 INFO L225 Difference]: With dead ends: 917 [2020-12-22 08:49:01,067 INFO L226 Difference]: Without dead ends: 599 [2020-12-22 08:49:01,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:49:01,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-12-22 08:49:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-12-22 08:49:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-22 08:49:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 907 transitions. [2020-12-22 08:49:01,155 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 907 transitions. Word has length 78 [2020-12-22 08:49:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:01,156 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 907 transitions. [2020-12-22 08:49:01,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:49:01,157 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 907 transitions. [2020-12-22 08:49:01,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:49:01,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:01,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:01,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:49:01,164 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:01,166 INFO L82 PathProgramCache]: Analyzing trace with hash 172704802, now seen corresponding path program 1 times [2020-12-22 08:49:01,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:01,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224803749] [2020-12-22 08:49:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:01,369 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 08:49:01,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224803749] [2020-12-22 08:49:01,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:01,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:49:01,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516613981] [2020-12-22 08:49:01,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:49:01,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:01,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:49:01,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:49:01,377 INFO L87 Difference]: Start difference. First operand 597 states and 907 transitions. Second operand 6 states. [2020-12-22 08:49:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:01,622 INFO L93 Difference]: Finished difference Result 1615 states and 2495 transitions. [2020-12-22 08:49:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:49:01,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-22 08:49:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:01,630 INFO L225 Difference]: With dead ends: 1615 [2020-12-22 08:49:01,630 INFO L226 Difference]: Without dead ends: 1067 [2020-12-22 08:49:01,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:49:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2020-12-22 08:49:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2020-12-22 08:49:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-12-22 08:49:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1630 transitions. [2020-12-22 08:49:01,708 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1630 transitions. Word has length 79 [2020-12-22 08:49:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:01,709 INFO L481 AbstractCegarLoop]: Abstraction has 1065 states and 1630 transitions. [2020-12-22 08:49:01,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:49:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1630 transitions. [2020-12-22 08:49:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:49:01,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:01,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:01,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:49:01,713 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash 237210639, now seen corresponding path program 1 times [2020-12-22 08:49:01,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:01,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659724888] [2020-12-22 08:49:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:01,869 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 08:49:01,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659724888] [2020-12-22 08:49:01,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:01,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:49:01,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935450788] [2020-12-22 08:49:01,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:49:01,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:01,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:49:01,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:49:01,874 INFO L87 Difference]: Start difference. First operand 1065 states and 1630 transitions. Second operand 5 states. [2020-12-22 08:49:02,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:02,168 INFO L93 Difference]: Finished difference Result 2085 states and 3213 transitions. [2020-12-22 08:49:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:49:02,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 08:49:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:02,176 INFO L225 Difference]: With dead ends: 2085 [2020-12-22 08:49:02,177 INFO L226 Difference]: Without dead ends: 1065 [2020-12-22 08:49:02,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:49:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-12-22 08:49:02,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2020-12-22 08:49:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-12-22 08:49:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1613 transitions. [2020-12-22 08:49:02,268 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1613 transitions. Word has length 80 [2020-12-22 08:49:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:02,268 INFO L481 AbstractCegarLoop]: Abstraction has 1065 states and 1613 transitions. [2020-12-22 08:49:02,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:49:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1613 transitions. [2020-12-22 08:49:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:49:02,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:02,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:02,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:49:02,272 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:02,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2036404942, now seen corresponding path program 1 times [2020-12-22 08:49:02,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:02,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152603305] [2020-12-22 08:49:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:02,440 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 08:49:02,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152603305] [2020-12-22 08:49:02,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:02,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:49:02,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869013364] [2020-12-22 08:49:02,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:49:02,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:02,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:49:02,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:49:02,443 INFO L87 Difference]: Start difference. First operand 1065 states and 1613 transitions. Second operand 5 states. [2020-12-22 08:49:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:02,798 INFO L93 Difference]: Finished difference Result 2089 states and 3184 transitions. [2020-12-22 08:49:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:49:02,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:49:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:02,807 INFO L225 Difference]: With dead ends: 2089 [2020-12-22 08:49:02,807 INFO L226 Difference]: Without dead ends: 1065 [2020-12-22 08:49:02,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:49:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-12-22 08:49:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2020-12-22 08:49:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-12-22 08:49:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1596 transitions. [2020-12-22 08:49:02,918 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1596 transitions. Word has length 81 [2020-12-22 08:49:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:02,920 INFO L481 AbstractCegarLoop]: Abstraction has 1065 states and 1596 transitions. [2020-12-22 08:49:02,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:49:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1596 transitions. [2020-12-22 08:49:02,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:49:02,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:02,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:02,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:49:02,925 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:02,927 INFO L82 PathProgramCache]: Analyzing trace with hash 628219771, now seen corresponding path program 1 times [2020-12-22 08:49:02,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:02,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474109634] [2020-12-22 08:49:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:03,134 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 08:49:03,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474109634] [2020-12-22 08:49:03,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:03,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:49:03,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384413758] [2020-12-22 08:49:03,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:49:03,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:03,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:49:03,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:49:03,144 INFO L87 Difference]: Start difference. First operand 1065 states and 1596 transitions. Second operand 7 states. [2020-12-22 08:49:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:03,848 INFO L93 Difference]: Finished difference Result 5805 states and 8838 transitions. [2020-12-22 08:49:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:49:03,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:49:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:03,877 INFO L225 Difference]: With dead ends: 5805 [2020-12-22 08:49:03,877 INFO L226 Difference]: Without dead ends: 4915 [2020-12-22 08:49:03,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:49:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2020-12-22 08:49:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 1525. [2020-12-22 08:49:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2020-12-22 08:49:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2304 transitions. [2020-12-22 08:49:04,106 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2304 transitions. Word has length 82 [2020-12-22 08:49:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:04,106 INFO L481 AbstractCegarLoop]: Abstraction has 1525 states and 2304 transitions. [2020-12-22 08:49:04,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:49:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2304 transitions. [2020-12-22 08:49:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:49:04,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:04,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:04,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:49:04,109 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:04,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:04,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1374029307, now seen corresponding path program 1 times [2020-12-22 08:49:04,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:04,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367452562] [2020-12-22 08:49:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:04,274 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 08:49:04,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367452562] [2020-12-22 08:49:04,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:04,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:49:04,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242757558] [2020-12-22 08:49:04,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:49:04,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:04,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:49:04,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:49:04,277 INFO L87 Difference]: Start difference. First operand 1525 states and 2304 transitions. Second operand 7 states. [2020-12-22 08:49:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:05,036 INFO L93 Difference]: Finished difference Result 6205 states and 9452 transitions. [2020-12-22 08:49:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:49:05,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:49:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:05,066 INFO L225 Difference]: With dead ends: 6205 [2020-12-22 08:49:05,066 INFO L226 Difference]: Without dead ends: 5315 [2020-12-22 08:49:05,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:49:05,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5315 states. [2020-12-22 08:49:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5315 to 2497. [2020-12-22 08:49:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2497 states. [2020-12-22 08:49:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3796 transitions. [2020-12-22 08:49:05,410 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3796 transitions. Word has length 82 [2020-12-22 08:49:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:05,410 INFO L481 AbstractCegarLoop]: Abstraction has 2497 states and 3796 transitions. [2020-12-22 08:49:05,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:49:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3796 transitions. [2020-12-22 08:49:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:49:05,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:05,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:05,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:49:05,414 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:05,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:05,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1344416826, now seen corresponding path program 1 times [2020-12-22 08:49:05,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:05,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291343092] [2020-12-22 08:49:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:05,498 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 08:49:05,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291343092] [2020-12-22 08:49:05,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:05,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:05,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515325991] [2020-12-22 08:49:05,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:05,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:05,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:05,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:05,501 INFO L87 Difference]: Start difference. First operand 2497 states and 3796 transitions. Second operand 3 states. [2020-12-22 08:49:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:05,968 INFO L93 Difference]: Finished difference Result 6149 states and 9406 transitions. [2020-12-22 08:49:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:05,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 08:49:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:05,989 INFO L225 Difference]: With dead ends: 6149 [2020-12-22 08:49:05,989 INFO L226 Difference]: Without dead ends: 3879 [2020-12-22 08:49:05,995 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 08:49:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2020-12-22 08:49:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3877. [2020-12-22 08:49:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3877 states. [2020-12-22 08:49:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 5856 transitions. [2020-12-22 08:49:06,449 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 5856 transitions. Word has length 82 [2020-12-22 08:49:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:06,449 INFO L481 AbstractCegarLoop]: Abstraction has 3877 states and 5856 transitions. [2020-12-22 08:49:06,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 5856 transitions. [2020-12-22 08:49:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:49:06,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:06,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:06,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:49:06,452 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1136565019, now seen corresponding path program 1 times [2020-12-22 08:49:06,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:06,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215110334] [2020-12-22 08:49:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:06,532 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 08:49:06,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215110334] [2020-12-22 08:49:06,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:06,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:49:06,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995684403] [2020-12-22 08:49:06,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:49:06,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:06,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:49:06,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:49:06,539 INFO L87 Difference]: Start difference. First operand 3877 states and 5856 transitions. Second operand 3 states. [2020-12-22 08:49:07,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:07,668 INFO L93 Difference]: Finished difference Result 10785 states and 16290 transitions. [2020-12-22 08:49:07,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:49:07,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 08:49:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:07,734 INFO L225 Difference]: With dead ends: 10785 [2020-12-22 08:49:07,734 INFO L226 Difference]: Without dead ends: 7135 [2020-12-22 08:49:07,743 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 08:49:07,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2020-12-22 08:49:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 7005. [2020-12-22 08:49:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7005 states. [2020-12-22 08:49:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 10440 transitions. [2020-12-22 08:49:08,659 INFO L78 Accepts]: Start accepts. Automaton has 7005 states and 10440 transitions. Word has length 82 [2020-12-22 08:49:08,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:08,659 INFO L481 AbstractCegarLoop]: Abstraction has 7005 states and 10440 transitions. [2020-12-22 08:49:08,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:49:08,659 INFO L276 IsEmpty]: Start isEmpty. Operand 7005 states and 10440 transitions. [2020-12-22 08:49:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:49:08,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:08,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:08,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:49:08,662 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:08,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1295122343, now seen corresponding path program 1 times [2020-12-22 08:49:08,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:08,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883275310] [2020-12-22 08:49:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:08,840 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 08:49:08,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883275310] [2020-12-22 08:49:08,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:08,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:49:08,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781018960] [2020-12-22 08:49:08,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:49:08,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:08,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:49:08,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:49:08,844 INFO L87 Difference]: Start difference. First operand 7005 states and 10440 transitions. Second operand 7 states. [2020-12-22 08:49:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:10,703 INFO L93 Difference]: Finished difference Result 18863 states and 28190 transitions. [2020-12-22 08:49:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:49:10,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:49:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:10,752 INFO L225 Difference]: With dead ends: 18863 [2020-12-22 08:49:10,752 INFO L226 Difference]: Without dead ends: 16349 [2020-12-22 08:49:10,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:49:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16349 states. [2020-12-22 08:49:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16349 to 8713. [2020-12-22 08:49:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8713 states. [2020-12-22 08:49:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12988 transitions. [2020-12-22 08:49:11,817 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12988 transitions. Word has length 82 [2020-12-22 08:49:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:11,817 INFO L481 AbstractCegarLoop]: Abstraction has 8713 states and 12988 transitions. [2020-12-22 08:49:11,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:49:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12988 transitions. [2020-12-22 08:49:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:49:11,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:11,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:11,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:49:11,821 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1184031025, now seen corresponding path program 1 times [2020-12-22 08:49:11,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:11,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723723878] [2020-12-22 08:49:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:11,965 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 08:49:11,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723723878] [2020-12-22 08:49:11,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:11,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:49:11,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083466997] [2020-12-22 08:49:11,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:49:11,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:11,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:49:11,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:49:11,968 INFO L87 Difference]: Start difference. First operand 8713 states and 12988 transitions. Second operand 7 states. [2020-12-22 08:49:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:13,874 INFO L93 Difference]: Finished difference Result 21069 states and 31494 transitions. [2020-12-22 08:49:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:49:13,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:49:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:13,923 INFO L225 Difference]: With dead ends: 21069 [2020-12-22 08:49:13,923 INFO L226 Difference]: Without dead ends: 18555 [2020-12-22 08:49:13,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:49:13,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18555 states. [2020-12-22 08:49:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18555 to 10460. [2020-12-22 08:49:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10460 states. [2020-12-22 08:49:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 15596 transitions. [2020-12-22 08:49:15,107 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 15596 transitions. Word has length 82 [2020-12-22 08:49:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:15,107 INFO L481 AbstractCegarLoop]: Abstraction has 10460 states and 15596 transitions. [2020-12-22 08:49:15,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:49:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 15596 transitions. [2020-12-22 08:49:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:49:15,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:15,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:15,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:49:15,111 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:15,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:15,111 INFO L82 PathProgramCache]: Analyzing trace with hash 392667471, now seen corresponding path program 1 times [2020-12-22 08:49:15,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:15,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008343300] [2020-12-22 08:49:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:15,233 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 08:49:15,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008343300] [2020-12-22 08:49:15,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:15,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:49:15,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839858301] [2020-12-22 08:49:15,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:49:15,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:15,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:49:15,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:49:15,236 INFO L87 Difference]: Start difference. First operand 10460 states and 15596 transitions. Second operand 7 states. [2020-12-22 08:49:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:17,350 INFO L93 Difference]: Finished difference Result 22621 states and 33810 transitions. [2020-12-22 08:49:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:49:17,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 08:49:17,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:17,398 INFO L225 Difference]: With dead ends: 22621 [2020-12-22 08:49:17,398 INFO L226 Difference]: Without dead ends: 20107 [2020-12-22 08:49:17,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:49:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20107 states. [2020-12-22 08:49:18,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20107 to 12188. [2020-12-22 08:49:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12188 states. [2020-12-22 08:49:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12188 states to 12188 states and 18176 transitions. [2020-12-22 08:49:18,623 INFO L78 Accepts]: Start accepts. Automaton has 12188 states and 18176 transitions. Word has length 82 [2020-12-22 08:49:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:18,624 INFO L481 AbstractCegarLoop]: Abstraction has 12188 states and 18176 transitions. [2020-12-22 08:49:18,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:49:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 12188 states and 18176 transitions. [2020-12-22 08:49:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:49:18,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:18,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:18,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:49:18,627 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:18,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1274660632, now seen corresponding path program 1 times [2020-12-22 08:49:18,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:18,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463493215] [2020-12-22 08:49:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:18,752 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 08:49:18,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463493215] [2020-12-22 08:49:18,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:18,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:49:18,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082110112] [2020-12-22 08:49:18,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:49:18,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:18,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:49:18,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:49:18,755 INFO L87 Difference]: Start difference. First operand 12188 states and 18176 transitions. Second operand 5 states. [2020-12-22 08:49:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:21,461 INFO L93 Difference]: Finished difference Result 20742 states and 30881 transitions. [2020-12-22 08:49:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:49:21,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 08:49:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:21,507 INFO L225 Difference]: With dead ends: 20742 [2020-12-22 08:49:21,507 INFO L226 Difference]: Without dead ends: 20740 [2020-12-22 08:49:21,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:49:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20740 states. [2020-12-22 08:49:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20740 to 12284. [2020-12-22 08:49:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12284 states. [2020-12-22 08:49:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12284 states to 12284 states and 18216 transitions. [2020-12-22 08:49:23,014 INFO L78 Accepts]: Start accepts. Automaton has 12284 states and 18216 transitions. Word has length 83 [2020-12-22 08:49:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:23,014 INFO L481 AbstractCegarLoop]: Abstraction has 12284 states and 18216 transitions. [2020-12-22 08:49:23,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:49:23,014 INFO L276 IsEmpty]: Start isEmpty. Operand 12284 states and 18216 transitions. [2020-12-22 08:49:23,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:49:23,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:23,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:23,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:49:23,017 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:23,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1071199524, now seen corresponding path program 1 times [2020-12-22 08:49:23,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:23,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392910343] [2020-12-22 08:49:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:23,286 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 08:49:23,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392910343] [2020-12-22 08:49:23,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:23,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:49:23,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800238465] [2020-12-22 08:49:23,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:49:23,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:23,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:49:23,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:49:23,288 INFO L87 Difference]: Start difference. First operand 12284 states and 18216 transitions. Second operand 10 states. [2020-12-22 08:49:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:27,149 INFO L93 Difference]: Finished difference Result 36909 states and 54561 transitions. [2020-12-22 08:49:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:49:27,149 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-12-22 08:49:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:27,188 INFO L225 Difference]: With dead ends: 36909 [2020-12-22 08:49:27,188 INFO L226 Difference]: Without dead ends: 24858 [2020-12-22 08:49:27,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:49:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24858 states. [2020-12-22 08:49:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24858 to 12284. [2020-12-22 08:49:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12284 states. [2020-12-22 08:49:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12284 states to 12284 states and 18207 transitions. [2020-12-22 08:49:29,342 INFO L78 Accepts]: Start accepts. Automaton has 12284 states and 18207 transitions. Word has length 83 [2020-12-22 08:49:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:29,343 INFO L481 AbstractCegarLoop]: Abstraction has 12284 states and 18207 transitions. [2020-12-22 08:49:29,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:49:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12284 states and 18207 transitions. [2020-12-22 08:49:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:49:29,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:29,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:49:29,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:49:29,345 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:29,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1969986693, now seen corresponding path program 1 times [2020-12-22 08:49:29,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:29,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186330764] [2020-12-22 08:49:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:29,594 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 08:49:29,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186330764] [2020-12-22 08:49:29,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:29,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:49:29,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144256262] [2020-12-22 08:49:29,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:49:29,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:29,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:49:29,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:49:29,600 INFO L87 Difference]: Start difference. First operand 12284 states and 18207 transitions. Second operand 9 states. [2020-12-22 08:49:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:34,018 INFO L93 Difference]: Finished difference Result 42182 states and 62686 transitions. [2020-12-22 08:49:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:49:34,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-12-22 08:49:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:34,051 INFO L225 Difference]: With dead ends: 42182 [2020-12-22 08:49:34,052 INFO L226 Difference]: Without dead ends: 30096 [2020-12-22 08:49:34,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:49:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30096 states. [2020-12-22 08:49:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30096 to 12284. [2020-12-22 08:49:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12284 states. [2020-12-22 08:49:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12284 states to 12284 states and 18206 transitions. [2020-12-22 08:49:35,941 INFO L78 Accepts]: Start accepts. Automaton has 12284 states and 18206 transitions. Word has length 84 [2020-12-22 08:49:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:35,942 INFO L481 AbstractCegarLoop]: Abstraction has 12284 states and 18206 transitions. [2020-12-22 08:49:35,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:49:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 12284 states and 18206 transitions. [2020-12-22 08:49:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:49:35,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:35,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:35,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:49:35,945 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:35,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1057474215, now seen corresponding path program 1 times [2020-12-22 08:49:35,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:35,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504556987] [2020-12-22 08:49:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:36,197 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 08:49:36,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504556987] [2020-12-22 08:49:36,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:36,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:49:36,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283753201] [2020-12-22 08:49:36,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:49:36,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:36,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:49:36,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:49:36,199 INFO L87 Difference]: Start difference. First operand 12284 states and 18206 transitions. Second operand 10 states. [2020-12-22 08:49:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:40,240 INFO L93 Difference]: Finished difference Result 30699 states and 45409 transitions. [2020-12-22 08:49:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:49:40,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:49:40,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:40,263 INFO L225 Difference]: With dead ends: 30699 [2020-12-22 08:49:40,264 INFO L226 Difference]: Without dead ends: 18558 [2020-12-22 08:49:40,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:49:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18558 states. [2020-12-22 08:49:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18558 to 12284. [2020-12-22 08:49:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12284 states. [2020-12-22 08:49:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12284 states to 12284 states and 18203 transitions. [2020-12-22 08:49:42,136 INFO L78 Accepts]: Start accepts. Automaton has 12284 states and 18203 transitions. Word has length 84 [2020-12-22 08:49:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:42,137 INFO L481 AbstractCegarLoop]: Abstraction has 12284 states and 18203 transitions. [2020-12-22 08:49:42,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:49:42,137 INFO L276 IsEmpty]: Start isEmpty. Operand 12284 states and 18203 transitions. [2020-12-22 08:49:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:49:42,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:42,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:42,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:49:42,139 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1160191748, now seen corresponding path program 1 times [2020-12-22 08:49:42,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:42,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459669257] [2020-12-22 08:49:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:42,372 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 08:49:42,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459669257] [2020-12-22 08:49:42,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:42,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:49:42,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459115326] [2020-12-22 08:49:42,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:49:42,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:42,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:49:42,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:49:42,381 INFO L87 Difference]: Start difference. First operand 12284 states and 18203 transitions. Second operand 10 states. [2020-12-22 08:49:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:49:47,324 INFO L93 Difference]: Finished difference Result 36999 states and 54671 transitions. [2020-12-22 08:49:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:49:47,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-12-22 08:49:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:49:47,352 INFO L225 Difference]: With dead ends: 36999 [2020-12-22 08:49:47,352 INFO L226 Difference]: Without dead ends: 24873 [2020-12-22 08:49:47,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:49:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24873 states. [2020-12-22 08:49:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24873 to 12284. [2020-12-22 08:49:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12284 states. [2020-12-22 08:49:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12284 states to 12284 states and 18197 transitions. [2020-12-22 08:49:49,481 INFO L78 Accepts]: Start accepts. Automaton has 12284 states and 18197 transitions. Word has length 85 [2020-12-22 08:49:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:49:49,481 INFO L481 AbstractCegarLoop]: Abstraction has 12284 states and 18197 transitions. [2020-12-22 08:49:49,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:49:49,481 INFO L276 IsEmpty]: Start isEmpty. Operand 12284 states and 18197 transitions. [2020-12-22 08:49:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 08:49:49,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:49:49,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:49:49,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:49:49,484 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:49:49,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:49:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544046, now seen corresponding path program 1 times [2020-12-22 08:49:49,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:49:49,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694370599] [2020-12-22 08:49:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:49:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:49:49,877 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 08:49:49,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694370599] [2020-12-22 08:49:49,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:49:49,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:49:49,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119421198] [2020-12-22 08:49:49,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:49:49,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:49:49,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:49:49,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:49:49,881 INFO L87 Difference]: Start difference. First operand 12284 states and 18197 transitions. Second operand 13 states. [2020-12-22 08:49:50,493 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 08:49:51,306 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-12-22 08:49:53,418 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-12-22 08:50:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:12,303 INFO L93 Difference]: Finished difference Result 107872 states and 157175 transitions. [2020-12-22 08:50:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-22 08:50:12,304 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-12-22 08:50:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:12,461 INFO L225 Difference]: With dead ends: 107872 [2020-12-22 08:50:12,461 INFO L226 Difference]: Without dead ends: 95873 [2020-12-22 08:50:12,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=555, Invalid=1701, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 08:50:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95873 states. [2020-12-22 08:50:15,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95873 to 12290. [2020-12-22 08:50:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12290 states. [2020-12-22 08:50:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12290 states to 12290 states and 18192 transitions. [2020-12-22 08:50:15,664 INFO L78 Accepts]: Start accepts. Automaton has 12290 states and 18192 transitions. Word has length 86 [2020-12-22 08:50:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:15,664 INFO L481 AbstractCegarLoop]: Abstraction has 12290 states and 18192 transitions. [2020-12-22 08:50:15,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:50:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 12290 states and 18192 transitions. [2020-12-22 08:50:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:50:15,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:15,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:50:15,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:50:15,667 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash 420822697, now seen corresponding path program 1 times [2020-12-22 08:50:15,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:15,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114944880] [2020-12-22 08:50:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:17,894 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 08:50:17,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114944880] [2020-12-22 08:50:17,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:17,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-12-22 08:50:17,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672482589] [2020-12-22 08:50:17,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 08:50:17,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:17,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 08:50:17,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1008, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:50:17,896 INFO L87 Difference]: Start difference. First operand 12290 states and 18192 transitions. Second operand 34 states. [2020-12-22 08:50:18,323 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-12-22 08:50:19,164 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-12-22 08:50:19,391 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-12-22 08:50:19,629 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-12-22 08:50:19,860 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-12-22 08:50:20,082 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-12-22 08:50:20,592 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-12-22 08:50:20,884 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-12-22 08:50:21,234 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 08:50:21,677 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-12-22 08:50:22,117 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-12-22 08:50:22,581 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-12-22 08:50:23,114 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-12-22 08:50:23,676 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2020-12-22 08:50:24,352 WARN L197 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 128 [2020-12-22 08:50:24,685 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-12-22 08:50:25,018 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-12-22 08:50:27,410 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-12-22 08:50:28,030 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-12-22 08:50:39,886 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-12-22 08:50:54,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:54,521 INFO L93 Difference]: Finished difference Result 80859 states and 120073 transitions. [2020-12-22 08:50:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-22 08:50:54,522 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 87 [2020-12-22 08:50:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:54,607 INFO L225 Difference]: With dead ends: 80859 [2020-12-22 08:50:54,607 INFO L226 Difference]: Without dead ends: 78325 [2020-12-22 08:50:54,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=858, Invalid=4398, Unknown=0, NotChecked=0, Total=5256 [2020-12-22 08:50:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78325 states. [2020-12-22 08:50:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78325 to 12294. [2020-12-22 08:50:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12294 states. [2020-12-22 08:50:58,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12294 states to 12294 states and 18194 transitions. [2020-12-22 08:50:58,751 INFO L78 Accepts]: Start accepts. Automaton has 12294 states and 18194 transitions. Word has length 87 [2020-12-22 08:50:58,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:58,752 INFO L481 AbstractCegarLoop]: Abstraction has 12294 states and 18194 transitions. [2020-12-22 08:50:58,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-22 08:50:58,752 INFO L276 IsEmpty]: Start isEmpty. Operand 12294 states and 18194 transitions. [2020-12-22 08:50:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:50:58,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:58,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:50:58,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:50:58,754 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:58,755 INFO L82 PathProgramCache]: Analyzing trace with hash 916423674, now seen corresponding path program 1 times [2020-12-22 08:50:58,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:58,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309515967] [2020-12-22 08:50:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:59,015 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 08:50:59,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309515967] [2020-12-22 08:50:59,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:59,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:50:59,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897252447] [2020-12-22 08:50:59,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:50:59,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:59,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:50:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:50:59,018 INFO L87 Difference]: Start difference. First operand 12294 states and 18194 transitions. Second operand 10 states. [2020-12-22 08:51:05,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:05,475 INFO L93 Difference]: Finished difference Result 30563 states and 45185 transitions. [2020-12-22 08:51:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:51:05,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-12-22 08:51:05,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:05,494 INFO L225 Difference]: With dead ends: 30563 [2020-12-22 08:51:05,495 INFO L226 Difference]: Without dead ends: 18568 [2020-12-22 08:51:05,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:51:05,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18568 states. [2020-12-22 08:51:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18568 to 12288. [2020-12-22 08:51:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12288 states. [2020-12-22 08:51:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12288 states to 12288 states and 18179 transitions. [2020-12-22 08:51:09,183 INFO L78 Accepts]: Start accepts. Automaton has 12288 states and 18179 transitions. Word has length 87 [2020-12-22 08:51:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:09,183 INFO L481 AbstractCegarLoop]: Abstraction has 12288 states and 18179 transitions. [2020-12-22 08:51:09,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:51:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 12288 states and 18179 transitions. [2020-12-22 08:51:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:51:09,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:09,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:51:09,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:51:09,186 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:09,186 INFO L82 PathProgramCache]: Analyzing trace with hash -891179609, now seen corresponding path program 1 times [2020-12-22 08:51:09,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:09,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361461671] [2020-12-22 08:51:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:11,754 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 08:51:11,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361461671] [2020-12-22 08:51:11,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:11,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-12-22 08:51:11,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753083904] [2020-12-22 08:51:11,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 08:51:11,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:11,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 08:51:11,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:51:11,756 INFO L87 Difference]: Start difference. First operand 12288 states and 18179 transitions. Second operand 34 states. [2020-12-22 08:51:12,277 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 110 [2020-12-22 08:51:12,965 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:51:13,174 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 08:51:13,440 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:51:13,737 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:51:14,006 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 08:51:14,284 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-12-22 08:51:14,559 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 08:51:15,170 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-22 08:51:15,511 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-12-22 08:51:15,934 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-12-22 08:51:16,375 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-12-22 08:51:16,889 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-12-22 08:51:17,434 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2020-12-22 08:51:18,077 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2020-12-22 08:51:18,758 WARN L197 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-12-22 08:51:19,617 WARN L197 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 127 [2020-12-22 08:51:20,013 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-12-22 08:51:20,411 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-12-22 08:51:20,691 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-12-22 08:51:21,032 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-12-22 08:51:21,351 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-12-22 08:51:21,553 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:51:21,796 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 08:51:22,235 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 08:51:22,422 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:51:22,738 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:51:23,130 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-12-22 08:51:23,496 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 08:51:23,805 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-12-22 08:51:24,284 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:51:25,152 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:51:25,514 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:51:26,181 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:51:26,516 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 08:51:26,822 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-22 08:51:27,451 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:51:30,609 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-22 08:51:33,393 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:51:34,141 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 08:51:41,541 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-22 08:52:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:52:09,867 INFO L93 Difference]: Finished difference Result 110687 states and 164427 transitions. [2020-12-22 08:52:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-22 08:52:09,869 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 87 [2020-12-22 08:52:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:52:10,031 INFO L225 Difference]: With dead ends: 110687 [2020-12-22 08:52:10,031 INFO L226 Difference]: Without dead ends: 108155 [2020-12-22 08:52:10,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=1008, Invalid=5634, Unknown=0, NotChecked=0, Total=6642 [2020-12-22 08:52:10,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108155 states. [2020-12-22 08:52:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108155 to 12302. [2020-12-22 08:52:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12302 states. [2020-12-22 08:52:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12302 states to 12302 states and 18197 transitions. [2020-12-22 08:52:15,287 INFO L78 Accepts]: Start accepts. Automaton has 12302 states and 18197 transitions. Word has length 87 [2020-12-22 08:52:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:52:15,287 INFO L481 AbstractCegarLoop]: Abstraction has 12302 states and 18197 transitions. [2020-12-22 08:52:15,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-22 08:52:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 12302 states and 18197 transitions. [2020-12-22 08:52:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:52:15,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:52:15,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:52:15,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:52:15,289 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:52:15,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:52:15,290 INFO L82 PathProgramCache]: Analyzing trace with hash 927353448, now seen corresponding path program 1 times [2020-12-22 08:52:15,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:52:15,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831557998] [2020-12-22 08:52:15,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:52:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:52:18,939 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 08:52:18,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831557998] [2020-12-22 08:52:18,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:52:18,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-12-22 08:52:18,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163446027] [2020-12-22 08:52:18,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-22 08:52:18,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:52:18,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-22 08:52:18,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:52:18,942 INFO L87 Difference]: Start difference. First operand 12302 states and 18197 transitions. Second operand 34 states. [2020-12-22 08:52:19,966 WARN L197 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 139 [2020-12-22 08:52:20,777 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:52:21,018 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 08:52:21,329 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-12-22 08:52:21,643 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 08:52:21,976 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-12-22 08:52:22,327 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-12-22 08:52:22,665 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-12-22 08:52:23,498 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-22 08:52:24,007 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-12-22 08:52:24,882 WARN L197 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 111 [2020-12-22 08:52:25,896 WARN L197 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 128 [2020-12-22 08:52:27,145 WARN L197 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 136 [2020-12-22 08:52:28,663 WARN L197 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 157 DAG size of output: 147 [2020-12-22 08:52:30,629 WARN L197 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 171 DAG size of output: 159 [2020-12-22 08:52:33,003 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-12-22 08:52:35,744 WARN L197 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 195 DAG size of output: 181 [2020-12-22 08:52:36,259 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-12-22 08:52:36,779 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-12-22 08:52:37,199 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-12-22 08:52:37,704 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-12-22 08:52:38,199 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 08:52:38,465 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-22 08:52:38,844 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 08:52:39,525 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 08:52:39,814 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-22 08:52:40,238 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:52:40,762 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-22 08:52:41,185 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:52:41,618 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-22 08:52:42,055 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-12-22 08:52:42,612 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 08:52:43,444 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-22 08:52:44,038 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-12-22 08:52:44,622 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50