/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:24:05,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:24:05,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:24:05,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:24:05,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:24:05,715 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:24:05,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:24:05,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:24:05,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:24:05,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:24:05,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:24:05,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:24:05,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:24:05,717 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:24:05,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:24:05,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:24:05,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:24:05,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:24:05,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:24:05,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:24:05,718 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:24:05,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:24:05,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:24:05,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:24:05,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:24:05,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:24:05,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:24:05,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:24:05,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:24:05,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:24:05,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:24:05,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:24:05,720 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:24:05,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:24:05,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:24:05,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:24:05,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:24:05,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:24:05,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:24:05,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:24:05,925 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:24:05,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2022-01-10 02:24:05,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c56f3bbc/132517fba54f4967835b0f3c1038faf9/FLAG8c9634dd0 [2022-01-10 02:24:06,524 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:24:06,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2022-01-10 02:24:06,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c56f3bbc/132517fba54f4967835b0f3c1038faf9/FLAG8c9634dd0 [2022-01-10 02:24:06,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c56f3bbc/132517fba54f4967835b0f3c1038faf9 [2022-01-10 02:24:06,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:24:06,964 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:24:06,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:24:06,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:24:06,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:24:06,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:24:06" (1/1) ... [2022-01-10 02:24:06,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff6e629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:06, skipping insertion in model container [2022-01-10 02:24:06,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:24:06" (1/1) ... [2022-01-10 02:24:06,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:24:07,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:24:07,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[15482,15495] [2022-01-10 02:24:07,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[18299,18312] [2022-01-10 02:24:07,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:24:07,799 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:24:07,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[15482,15495] [2022-01-10 02:24:07,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[18299,18312] [2022-01-10 02:24:08,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:24:08,196 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:24:08,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08 WrapperNode [2022-01-10 02:24:08,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:24:08,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:24:08,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:24:08,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:24:08,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,490 INFO L137 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5149 [2022-01-10 02:24:08,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:24:08,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:24:08,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:24:08,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:24:08,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:24:08,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:24:08,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:24:08,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:24:08,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (1/1) ... [2022-01-10 02:24:08,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:24:08,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:24:08,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 02:24:08,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 02:24:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:24:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:24:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:24:09,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:24:09,162 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:24:09,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:24:11,855 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:24:11,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:24:11,866 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:24:11,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:24:11 BoogieIcfgContainer [2022-01-10 02:24:11,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:24:11,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:24:11,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:24:11,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:24:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:24:06" (1/3) ... [2022-01-10 02:24:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6caf84d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:24:11, skipping insertion in model container [2022-01-10 02:24:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:08" (2/3) ... [2022-01-10 02:24:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6caf84d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:24:11, skipping insertion in model container [2022-01-10 02:24:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:24:11" (3/3) ... [2022-01-10 02:24:11,874 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2022-01-10 02:24:11,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:24:11,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:24:11,943 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:24:11,947 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:24:11,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:24:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 926 states, 923 states have (on average 1.8992416034669555) internal successors, (1753), 925 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 02:24:11,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:11,990 INFO L514 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] [2022-01-10 02:24:11,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash -407855243, now seen corresponding path program 1 times [2022-01-10 02:24:12,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:12,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419112911] [2022-01-10 02:24:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:12,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:12,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:12,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419112911] [2022-01-10 02:24:12,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419112911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:12,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:12,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:24:12,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623154045] [2022-01-10 02:24:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:12,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:12,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:12,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:12,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:12,249 INFO L87 Difference]: Start difference. First operand has 926 states, 923 states have (on average 1.8992416034669555) internal successors, (1753), 925 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:15,203 INFO L93 Difference]: Finished difference Result 2561 states and 4920 transitions. [2022-01-10 02:24:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-10 02:24:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:15,220 INFO L225 Difference]: With dead ends: 2561 [2022-01-10 02:24:15,220 INFO L226 Difference]: Without dead ends: 1611 [2022-01-10 02:24:15,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:15,226 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1058 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:15,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 342 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 02:24:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-01-10 02:24:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2022-01-10 02:24:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1609 states have (on average 1.839030453697949) internal successors, (2959), 1610 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2959 transitions. [2022-01-10 02:24:15,291 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2959 transitions. Word has length 24 [2022-01-10 02:24:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:15,291 INFO L470 AbstractCegarLoop]: Abstraction has 1611 states and 2959 transitions. [2022-01-10 02:24:15,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2959 transitions. [2022-01-10 02:24:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 02:24:15,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:15,293 INFO L514 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] [2022-01-10 02:24:15,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:24:15,293 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:15,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 615382892, now seen corresponding path program 1 times [2022-01-10 02:24:15,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:15,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121026308] [2022-01-10 02:24:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:15,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:15,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:15,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121026308] [2022-01-10 02:24:15,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121026308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:15,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:15,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:24:15,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662944222] [2022-01-10 02:24:15,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:15,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:24:15,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:15,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:24:15,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:24:15,344 INFO L87 Difference]: Start difference. First operand 1611 states and 2959 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:15,402 INFO L93 Difference]: Finished difference Result 1675 states and 3058 transitions. [2022-01-10 02:24:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:24:15,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-10 02:24:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:15,407 INFO L225 Difference]: With dead ends: 1675 [2022-01-10 02:24:15,408 INFO L226 Difference]: Without dead ends: 1611 [2022-01-10 02:24:15,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:24:15,409 INFO L933 BasicCegarLoop]: 1618 mSDtfsCounter, 3 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6429 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:15,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6429 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-01-10 02:24:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2022-01-10 02:24:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1609 states have (on average 1.8141702921068987) internal successors, (2919), 1610 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2919 transitions. [2022-01-10 02:24:15,439 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2919 transitions. Word has length 38 [2022-01-10 02:24:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:15,440 INFO L470 AbstractCegarLoop]: Abstraction has 1611 states and 2919 transitions. [2022-01-10 02:24:15,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2919 transitions. [2022-01-10 02:24:15,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 02:24:15,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:15,448 INFO L514 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] [2022-01-10 02:24:15,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:24:15,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:15,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2101054792, now seen corresponding path program 1 times [2022-01-10 02:24:15,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:15,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392123125] [2022-01-10 02:24:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:15,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:15,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:15,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392123125] [2022-01-10 02:24:15,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392123125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:15,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:15,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:24:15,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123936341] [2022-01-10 02:24:15,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:15,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:15,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:15,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:15,588 INFO L87 Difference]: Start difference. First operand 1611 states and 2919 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:15,624 INFO L93 Difference]: Finished difference Result 1725 states and 3099 transitions. [2022-01-10 02:24:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 02:24:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:15,630 INFO L225 Difference]: With dead ends: 1725 [2022-01-10 02:24:15,630 INFO L226 Difference]: Without dead ends: 1665 [2022-01-10 02:24:15,630 INFO L932 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 [2022-01-10 02:24:15,631 INFO L933 BasicCegarLoop]: 1661 mSDtfsCounter, 1524 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:15,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 1754 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-01-10 02:24:15,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1663. [2022-01-10 02:24:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.8073449729078868) internal successors, (3002), 1662 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 3002 transitions. [2022-01-10 02:24:15,655 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 3002 transitions. Word has length 77 [2022-01-10 02:24:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:15,656 INFO L470 AbstractCegarLoop]: Abstraction has 1663 states and 3002 transitions. [2022-01-10 02:24:15,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 3002 transitions. [2022-01-10 02:24:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 02:24:15,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:15,657 INFO L514 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] [2022-01-10 02:24:15,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:24:15,657 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:15,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:15,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1452480302, now seen corresponding path program 1 times [2022-01-10 02:24:15,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:15,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992418711] [2022-01-10 02:24:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:15,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:15,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:15,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992418711] [2022-01-10 02:24:15,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992418711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:15,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:15,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:24:15,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609903455] [2022-01-10 02:24:15,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:15,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:15,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:15,847 INFO L87 Difference]: Start difference. First operand 1663 states and 3002 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:15,899 INFO L93 Difference]: Finished difference Result 1875 states and 3338 transitions. [2022-01-10 02:24:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:15,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 02:24:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:15,905 INFO L225 Difference]: With dead ends: 1875 [2022-01-10 02:24:15,905 INFO L226 Difference]: Without dead ends: 1763 [2022-01-10 02:24:15,905 INFO L932 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 [2022-01-10 02:24:15,906 INFO L933 BasicCegarLoop]: 1604 mSDtfsCounter, 1504 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:15,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 1717 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2022-01-10 02:24:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1761. [2022-01-10 02:24:15,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1759 states have (on average 1.794769755542922) internal successors, (3157), 1760 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 3157 transitions. [2022-01-10 02:24:15,958 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 3157 transitions. Word has length 77 [2022-01-10 02:24:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:15,972 INFO L470 AbstractCegarLoop]: Abstraction has 1761 states and 3157 transitions. [2022-01-10 02:24:15,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 3157 transitions. [2022-01-10 02:24:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 02:24:15,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:15,974 INFO L514 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] [2022-01-10 02:24:15,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:24:15,974 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1624501596, now seen corresponding path program 1 times [2022-01-10 02:24:15,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:15,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60746623] [2022-01-10 02:24:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:15,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:16,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:16,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60746623] [2022-01-10 02:24:16,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60746623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:16,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:16,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:24:16,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192056701] [2022-01-10 02:24:16,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:16,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:24:16,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:24:16,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:24:16,071 INFO L87 Difference]: Start difference. First operand 1761 states and 3157 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:16,363 INFO L93 Difference]: Finished difference Result 4281 states and 7153 transitions. [2022-01-10 02:24:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 02:24:16,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 02:24:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:16,377 INFO L225 Difference]: With dead ends: 4281 [2022-01-10 02:24:16,377 INFO L226 Difference]: Without dead ends: 4071 [2022-01-10 02:24:16,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:24:16,380 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 10491 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10491 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:16,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10491 Valid, 2765 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:24:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2022-01-10 02:24:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 1969. [2022-01-10 02:24:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1967 states have (on average 1.769700050838841) internal successors, (3481), 1968 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 3481 transitions. [2022-01-10 02:24:16,435 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 3481 transitions. Word has length 77 [2022-01-10 02:24:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:16,435 INFO L470 AbstractCegarLoop]: Abstraction has 1969 states and 3481 transitions. [2022-01-10 02:24:16,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 3481 transitions. [2022-01-10 02:24:16,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:24:16,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:16,436 INFO L514 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] [2022-01-10 02:24:16,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:24:16,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 806369108, now seen corresponding path program 1 times [2022-01-10 02:24:16,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:16,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394381741] [2022-01-10 02:24:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:16,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:16,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:16,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394381741] [2022-01-10 02:24:16,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394381741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:16,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:16,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:24:16,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130601189] [2022-01-10 02:24:16,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:16,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:16,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:16,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:16,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:16,492 INFO L87 Difference]: Start difference. First operand 1969 states and 3481 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:16,540 INFO L93 Difference]: Finished difference Result 2589 states and 4453 transitions. [2022-01-10 02:24:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:16,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 02:24:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:16,548 INFO L225 Difference]: With dead ends: 2589 [2022-01-10 02:24:16,548 INFO L226 Difference]: Without dead ends: 2171 [2022-01-10 02:24:16,549 INFO L932 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 [2022-01-10 02:24:16,550 INFO L933 BasicCegarLoop]: 1585 mSDtfsCounter, 1496 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:16,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 1675 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2022-01-10 02:24:16,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2022-01-10 02:24:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2167 states have (on average 1.7485002307337332) internal successors, (3789), 2168 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3789 transitions. [2022-01-10 02:24:16,604 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3789 transitions. Word has length 79 [2022-01-10 02:24:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:16,604 INFO L470 AbstractCegarLoop]: Abstraction has 2169 states and 3789 transitions. [2022-01-10 02:24:16,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3789 transitions. [2022-01-10 02:24:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:24:16,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:16,605 INFO L514 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] [2022-01-10 02:24:16,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:24:16,606 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash 872862620, now seen corresponding path program 1 times [2022-01-10 02:24:16,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:16,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423281830] [2022-01-10 02:24:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:16,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:16,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:16,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423281830] [2022-01-10 02:24:16,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423281830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:16,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:16,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:24:16,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095287569] [2022-01-10 02:24:16,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:16,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:24:16,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:24:16,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:24:16,752 INFO L87 Difference]: Start difference. First operand 2169 states and 3789 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:16,975 INFO L93 Difference]: Finished difference Result 2787 states and 4753 transitions. [2022-01-10 02:24:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:24:16,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 02:24:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:16,982 INFO L225 Difference]: With dead ends: 2787 [2022-01-10 02:24:16,982 INFO L226 Difference]: Without dead ends: 2171 [2022-01-10 02:24:16,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:24:16,984 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 7775 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7775 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:16,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7775 Valid, 2058 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2022-01-10 02:24:17,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2022-01-10 02:24:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2167 states have (on average 1.7457314259344716) internal successors, (3783), 2168 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3783 transitions. [2022-01-10 02:24:17,040 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3783 transitions. Word has length 79 [2022-01-10 02:24:17,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:17,041 INFO L470 AbstractCegarLoop]: Abstraction has 2169 states and 3783 transitions. [2022-01-10 02:24:17,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3783 transitions. [2022-01-10 02:24:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:24:17,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:17,042 INFO L514 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] [2022-01-10 02:24:17,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:24:17,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:17,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash -385682984, now seen corresponding path program 1 times [2022-01-10 02:24:17,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:17,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17008486] [2022-01-10 02:24:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:17,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:17,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17008486] [2022-01-10 02:24:17,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17008486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:17,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:17,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:24:17,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481433335] [2022-01-10 02:24:17,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:17,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:17,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:17,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:17,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:17,070 INFO L87 Difference]: Start difference. First operand 2169 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:17,139 INFO L93 Difference]: Finished difference Result 3329 states and 5577 transitions. [2022-01-10 02:24:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 02:24:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:17,146 INFO L225 Difference]: With dead ends: 3329 [2022-01-10 02:24:17,146 INFO L226 Difference]: Without dead ends: 2713 [2022-01-10 02:24:17,147 INFO L932 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 [2022-01-10 02:24:17,148 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 1508 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:17,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 1726 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-01-10 02:24:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2022-01-10 02:24:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2709 states have (on average 1.70062753783684) internal successors, (4607), 2710 states have internal predecessors, (4607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4607 transitions. [2022-01-10 02:24:17,224 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 4607 transitions. Word has length 79 [2022-01-10 02:24:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:17,224 INFO L470 AbstractCegarLoop]: Abstraction has 2711 states and 4607 transitions. [2022-01-10 02:24:17,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 4607 transitions. [2022-01-10 02:24:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:24:17,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:17,225 INFO L514 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] [2022-01-10 02:24:17,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:24:17,226 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -111995272, now seen corresponding path program 1 times [2022-01-10 02:24:17,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:17,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108835532] [2022-01-10 02:24:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:17,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:17,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:17,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108835532] [2022-01-10 02:24:17,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108835532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:17,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:17,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:24:17,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640208217] [2022-01-10 02:24:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:17,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:17,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:17,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:17,252 INFO L87 Difference]: Start difference. First operand 2711 states and 4607 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:17,418 INFO L93 Difference]: Finished difference Result 4883 states and 7929 transitions. [2022-01-10 02:24:17,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:17,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 02:24:17,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:17,430 INFO L225 Difference]: With dead ends: 4883 [2022-01-10 02:24:17,430 INFO L226 Difference]: Without dead ends: 3725 [2022-01-10 02:24:17,432 INFO L932 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 [2022-01-10 02:24:17,433 INFO L933 BasicCegarLoop]: 1630 mSDtfsCounter, 1512 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:17,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 1735 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2022-01-10 02:24:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3723. [2022-01-10 02:24:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 3721 states have (on average 1.6455253963988175) internal successors, (6123), 3722 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 6123 transitions. [2022-01-10 02:24:17,567 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 6123 transitions. Word has length 79 [2022-01-10 02:24:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:17,567 INFO L470 AbstractCegarLoop]: Abstraction has 3723 states and 6123 transitions. [2022-01-10 02:24:17,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 6123 transitions. [2022-01-10 02:24:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:24:17,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:17,568 INFO L514 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] [2022-01-10 02:24:17,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:24:17,568 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1707076376, now seen corresponding path program 1 times [2022-01-10 02:24:17,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:17,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959630686] [2022-01-10 02:24:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:17,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:17,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:17,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959630686] [2022-01-10 02:24:17,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959630686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:17,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:17,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:24:17,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100076480] [2022-01-10 02:24:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:17,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:17,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:17,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:17,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:17,599 INFO L87 Difference]: Start difference. First operand 3723 states and 6123 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:17,804 INFO L93 Difference]: Finished difference Result 7775 states and 12237 transitions. [2022-01-10 02:24:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:17,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 02:24:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:17,817 INFO L225 Difference]: With dead ends: 7775 [2022-01-10 02:24:17,817 INFO L226 Difference]: Without dead ends: 5605 [2022-01-10 02:24:17,820 INFO L932 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 [2022-01-10 02:24:17,821 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 1516 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:17,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5605 states. [2022-01-10 02:24:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5605 to 5603. [2022-01-10 02:24:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5603 states, 5601 states have (on average 1.5873951080164257) internal successors, (8891), 5602 states have internal predecessors, (8891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5603 states to 5603 states and 8891 transitions. [2022-01-10 02:24:18,145 INFO L78 Accepts]: Start accepts. Automaton has 5603 states and 8891 transitions. Word has length 79 [2022-01-10 02:24:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:18,146 INFO L470 AbstractCegarLoop]: Abstraction has 5603 states and 8891 transitions. [2022-01-10 02:24:18,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5603 states and 8891 transitions. [2022-01-10 02:24:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:24:18,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:18,147 INFO L514 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] [2022-01-10 02:24:18,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:24:18,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1886482360, now seen corresponding path program 1 times [2022-01-10 02:24:18,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:18,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688761677] [2022-01-10 02:24:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:18,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:18,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688761677] [2022-01-10 02:24:18,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688761677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:18,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:18,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:24:18,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489488051] [2022-01-10 02:24:18,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:18,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:18,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:18,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:18,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:24:18,174 INFO L87 Difference]: Start difference. First operand 5603 states and 8891 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:18,635 INFO L93 Difference]: Finished difference Result 13127 states and 20061 transitions. [2022-01-10 02:24:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:18,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 02:24:18,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:18,656 INFO L225 Difference]: With dead ends: 13127 [2022-01-10 02:24:18,656 INFO L226 Difference]: Without dead ends: 9077 [2022-01-10 02:24:18,664 INFO L932 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 [2022-01-10 02:24:18,665 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 1520 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:18,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 1753 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9077 states. [2022-01-10 02:24:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9077 to 9075. [2022-01-10 02:24:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9075 states, 9073 states have (on average 1.531907858481208) internal successors, (13899), 9074 states have internal predecessors, (13899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 13899 transitions. [2022-01-10 02:24:19,148 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 13899 transitions. Word has length 79 [2022-01-10 02:24:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:19,149 INFO L470 AbstractCegarLoop]: Abstraction has 9075 states and 13899 transitions. [2022-01-10 02:24:19,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 13899 transitions. [2022-01-10 02:24:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 02:24:19,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:19,150 INFO L514 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] [2022-01-10 02:24:19,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:24:19,150 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:19,151 INFO L85 PathProgramCache]: Analyzing trace with hash 874214487, now seen corresponding path program 1 times [2022-01-10 02:24:19,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:19,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149962144] [2022-01-10 02:24:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:19,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:19,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:19,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149962144] [2022-01-10 02:24:19,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149962144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:19,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:19,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:24:19,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658163166] [2022-01-10 02:24:19,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:19,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:24:19,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:19,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:24:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:24:19,232 INFO L87 Difference]: Start difference. First operand 9075 states and 13899 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:20,103 INFO L93 Difference]: Finished difference Result 15538 states and 23170 transitions. [2022-01-10 02:24:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:24:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 02:24:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:20,129 INFO L225 Difference]: With dead ends: 15538 [2022-01-10 02:24:20,129 INFO L226 Difference]: Without dead ends: 15536 [2022-01-10 02:24:20,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:24:20,133 INFO L933 BasicCegarLoop]: 1609 mSDtfsCounter, 730 mSDsluCounter, 9164 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 10773 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:20,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 10773 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:20,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15536 states. [2022-01-10 02:24:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15536 to 9459. [2022-01-10 02:24:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 9457 states have (on average 1.5069260864967748) internal successors, (14251), 9458 states have internal predecessors, (14251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 14251 transitions. [2022-01-10 02:24:20,777 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 14251 transitions. Word has length 80 [2022-01-10 02:24:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:20,777 INFO L470 AbstractCegarLoop]: Abstraction has 9459 states and 14251 transitions. [2022-01-10 02:24:20,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 14251 transitions. [2022-01-10 02:24:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 02:24:20,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:20,778 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:24:20,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:24:20,779 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1948928744, now seen corresponding path program 1 times [2022-01-10 02:24:20,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:20,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886367044] [2022-01-10 02:24:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:20,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:20,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:20,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886367044] [2022-01-10 02:24:20,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886367044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:20,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:20,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:24:20,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105853145] [2022-01-10 02:24:20,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:20,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:24:20,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:20,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:24:20,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:24:20,832 INFO L87 Difference]: Start difference. First operand 9459 states and 14251 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:25,926 INFO L93 Difference]: Finished difference Result 13216 states and 21141 transitions. [2022-01-10 02:24:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:24:25,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-10 02:24:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:25,946 INFO L225 Difference]: With dead ends: 13216 [2022-01-10 02:24:25,946 INFO L226 Difference]: Without dead ends: 11712 [2022-01-10 02:24:25,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:24:25,952 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 2452 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 6307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:25,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2452 Valid, 852 Invalid, 6307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-01-10 02:24:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11712 states. [2022-01-10 02:24:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 11712. [2022-01-10 02:24:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11712 states, 11710 states have (on average 1.484201537147737) internal successors, (17380), 11711 states have internal predecessors, (17380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11712 states to 11712 states and 17380 transitions. [2022-01-10 02:24:26,762 INFO L78 Accepts]: Start accepts. Automaton has 11712 states and 17380 transitions. Word has length 93 [2022-01-10 02:24:26,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:26,762 INFO L470 AbstractCegarLoop]: Abstraction has 11712 states and 17380 transitions. [2022-01-10 02:24:26,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 11712 states and 17380 transitions. [2022-01-10 02:24:26,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 02:24:26,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:26,764 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:24:26,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:24:26,764 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:26,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1319567043, now seen corresponding path program 1 times [2022-01-10 02:24:26,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:26,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362993119] [2022-01-10 02:24:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:26,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:26,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:26,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362993119] [2022-01-10 02:24:26,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362993119] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:24:26,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648137500] [2022-01-10 02:24:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:26,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:24:26,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:24:26,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:24:26,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 02:24:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:26,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:24:26,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:24:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:24:27,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:24:27,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648137500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:27,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:24:27,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 02:24:27,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502178389] [2022-01-10 02:24:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:27,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:24:27,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:24:27,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:24:27,112 INFO L87 Difference]: Start difference. First operand 11712 states and 17380 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:30,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:30,041 INFO L93 Difference]: Finished difference Result 18473 states and 28432 transitions. [2022-01-10 02:24:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:24:30,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 02:24:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:30,066 INFO L225 Difference]: With dead ends: 18473 [2022-01-10 02:24:30,066 INFO L226 Difference]: Without dead ends: 14716 [2022-01-10 02:24:30,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:24:30,078 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 767 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:30,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 1260 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 02:24:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2022-01-10 02:24:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 14716. [2022-01-10 02:24:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14716 states, 14714 states have (on average 1.485659915726519) internal successors, (21860), 14715 states have internal predecessors, (21860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14716 states to 14716 states and 21860 transitions. [2022-01-10 02:24:30,754 INFO L78 Accepts]: Start accepts. Automaton has 14716 states and 21860 transitions. Word has length 95 [2022-01-10 02:24:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:30,754 INFO L470 AbstractCegarLoop]: Abstraction has 14716 states and 21860 transitions. [2022-01-10 02:24:30,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 14716 states and 21860 transitions. [2022-01-10 02:24:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:24:30,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:30,760 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:24:30,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 02:24:30,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-10 02:24:30,978 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:30,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1411161737, now seen corresponding path program 1 times [2022-01-10 02:24:30,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:30,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431817146] [2022-01-10 02:24:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:30,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 02:24:31,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:31,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431817146] [2022-01-10 02:24:31,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431817146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:31,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:31,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:24:31,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659559492] [2022-01-10 02:24:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:31,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:24:31,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:31,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:24:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:24:31,049 INFO L87 Difference]: Start difference. First operand 14716 states and 21860 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:34,063 INFO L93 Difference]: Finished difference Result 63722 states and 92571 transitions. [2022-01-10 02:24:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:24:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-10 02:24:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:34,156 INFO L225 Difference]: With dead ends: 63722 [2022-01-10 02:24:34,157 INFO L226 Difference]: Without dead ends: 55816 [2022-01-10 02:24:34,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:24:34,174 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 8615 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8615 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:34,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8615 Valid, 3817 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:24:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55816 states. [2022-01-10 02:24:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55816 to 22620. [2022-01-10 02:24:35,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22620 states, 22618 states have (on average 1.4673269077725706) internal successors, (33188), 22619 states have internal predecessors, (33188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22620 states to 22620 states and 33188 transitions. [2022-01-10 02:24:35,715 INFO L78 Accepts]: Start accepts. Automaton has 22620 states and 33188 transitions. Word has length 112 [2022-01-10 02:24:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:35,716 INFO L470 AbstractCegarLoop]: Abstraction has 22620 states and 33188 transitions. [2022-01-10 02:24:35,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 22620 states and 33188 transitions. [2022-01-10 02:24:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:24:35,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:35,721 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:24:35,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:24:35,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:35,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1381639519, now seen corresponding path program 1 times [2022-01-10 02:24:35,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:35,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189138671] [2022-01-10 02:24:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:35,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:24:35,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:35,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189138671] [2022-01-10 02:24:35,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189138671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:35,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:35,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:24:35,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906585789] [2022-01-10 02:24:35,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:35,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:24:35,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:24:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:24:35,783 INFO L87 Difference]: Start difference. First operand 22620 states and 33188 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:39,915 INFO L93 Difference]: Finished difference Result 71626 states and 103899 transitions. [2022-01-10 02:24:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:24:39,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-10 02:24:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:40,018 INFO L225 Difference]: With dead ends: 71626 [2022-01-10 02:24:40,019 INFO L226 Difference]: Without dead ends: 63720 [2022-01-10 02:24:40,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:24:40,041 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 8440 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8440 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:40,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8440 Valid, 3881 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:24:40,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63720 states. [2022-01-10 02:24:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63720 to 34492. [2022-01-10 02:24:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34492 states, 34490 states have (on average 1.4525949550594375) internal successors, (50100), 34491 states have internal predecessors, (50100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34492 states to 34492 states and 50100 transitions. [2022-01-10 02:24:42,693 INFO L78 Accepts]: Start accepts. Automaton has 34492 states and 50100 transitions. Word has length 112 [2022-01-10 02:24:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:42,694 INFO L470 AbstractCegarLoop]: Abstraction has 34492 states and 50100 transitions. [2022-01-10 02:24:42,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 34492 states and 50100 transitions. [2022-01-10 02:24:42,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:24:42,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:42,710 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:24:42,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:24:42,711 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:42,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1107951807, now seen corresponding path program 1 times [2022-01-10 02:24:42,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:42,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561128980] [2022-01-10 02:24:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:42,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 02:24:42,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:42,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561128980] [2022-01-10 02:24:42,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561128980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:42,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:42,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:24:42,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761175192] [2022-01-10 02:24:42,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:42,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:24:42,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:42,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:24:42,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:24:42,775 INFO L87 Difference]: Start difference. First operand 34492 states and 50100 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:47,912 INFO L93 Difference]: Finished difference Result 79530 states and 115227 transitions. [2022-01-10 02:24:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:24:47,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-10 02:24:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:48,007 INFO L225 Difference]: With dead ends: 79530 [2022-01-10 02:24:48,007 INFO L226 Difference]: Without dead ends: 71624 [2022-01-10 02:24:48,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:24:48,031 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 8408 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8408 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:48,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8408 Valid, 3921 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:24:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71624 states. [2022-01-10 02:24:51,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71624 to 42396. [2022-01-10 02:24:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42396 states, 42394 states have (on average 1.448978629051281) internal successors, (61428), 42395 states have internal predecessors, (61428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42396 states to 42396 states and 61428 transitions. [2022-01-10 02:24:51,647 INFO L78 Accepts]: Start accepts. Automaton has 42396 states and 61428 transitions. Word has length 112 [2022-01-10 02:24:51,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:24:51,647 INFO L470 AbstractCegarLoop]: Abstraction has 42396 states and 61428 transitions. [2022-01-10 02:24:51,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 42396 states and 61428 transitions. [2022-01-10 02:24:51,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:24:51,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:24:51,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:24:51,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:24:51,659 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:24:51,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:24:51,665 INFO L85 PathProgramCache]: Analyzing trace with hash 711119841, now seen corresponding path program 1 times [2022-01-10 02:24:51,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:24:51,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130058317] [2022-01-10 02:24:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:24:51,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:24:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:24:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 02:24:51,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:24:51,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130058317] [2022-01-10 02:24:51,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130058317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:24:51,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:24:51,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:24:51,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427723615] [2022-01-10 02:24:51,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:24:51,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:24:51,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:24:51,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:24:51,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:24:51,742 INFO L87 Difference]: Start difference. First operand 42396 states and 61428 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:24:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:24:58,519 INFO L93 Difference]: Finished difference Result 87434 states and 126555 transitions. [2022-01-10 02:24:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:24:58,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-10 02:24:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:24:58,626 INFO L225 Difference]: With dead ends: 87434 [2022-01-10 02:24:58,627 INFO L226 Difference]: Without dead ends: 79528 [2022-01-10 02:24:58,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:24:58,650 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 8478 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8478 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:24:58,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8478 Valid, 3918 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:24:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79528 states. [2022-01-10 02:25:02,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79528 to 50300. [2022-01-10 02:25:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50300 states, 50298 states have (on average 1.4464988667541452) internal successors, (72756), 50299 states have internal predecessors, (72756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:25:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50300 states to 50300 states and 72756 transitions. [2022-01-10 02:25:03,126 INFO L78 Accepts]: Start accepts. Automaton has 50300 states and 72756 transitions. Word has length 112 [2022-01-10 02:25:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:25:03,127 INFO L470 AbstractCegarLoop]: Abstraction has 50300 states and 72756 transitions. [2022-01-10 02:25:03,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:25:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 50300 states and 72756 transitions. [2022-01-10 02:25:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:25:03,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:25:03,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:25:03,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:25:03,135 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:25:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:25:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash 890525825, now seen corresponding path program 1 times [2022-01-10 02:25:03,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:25:03,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647711172] [2022-01-10 02:25:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:25:03,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:25:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:25:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 02:25:03,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:25:03,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647711172] [2022-01-10 02:25:03,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647711172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:25:03,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:25:03,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:25:03,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684593589] [2022-01-10 02:25:03,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:25:03,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:25:03,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:25:03,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:25:03,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:25:03,253 INFO L87 Difference]: Start difference. First operand 50300 states and 72756 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:25:11,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:25:11,377 INFO L93 Difference]: Finished difference Result 95338 states and 137883 transitions. [2022-01-10 02:25:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:25:11,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-10 02:25:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:25:11,505 INFO L225 Difference]: With dead ends: 95338 [2022-01-10 02:25:11,505 INFO L226 Difference]: Without dead ends: 87432 [2022-01-10 02:25:11,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:25:11,530 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 8582 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8582 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:25:11,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8582 Valid, 3911 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:25:11,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87432 states.