/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/eca-rers2012/Problem18_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:28:03,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:28:03,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:28:03,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:28:03,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:28:03,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:28:03,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:28:03,935 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 00:28:03,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:28:03,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:28:03,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:28:03,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:28:03,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:28:03,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:28:03,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:28:03,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:28:03,952 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:28:03,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:28:03,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:28:03,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:28:03,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:28:03,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:28:03,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:28:03,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:28:03,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:28:03,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:28:03,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:28:03,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:28:03,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:28:03,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:28:03,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:28:04,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:28:04,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:28:04,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:28:04,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:28:04,168 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:28:04,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2022-01-10 00:28:04,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258b03113/f0e47512d87d4ff6800db31734117657/FLAGe976f3262 [2022-01-10 00:28:04,761 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:28:04,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2022-01-10 00:28:04,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258b03113/f0e47512d87d4ff6800db31734117657/FLAGe976f3262 [2022-01-10 00:28:05,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258b03113/f0e47512d87d4ff6800db31734117657 [2022-01-10 00:28:05,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:28:05,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:28:05,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:28:05,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:28:05,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:28:05,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:28:05" (1/1) ... [2022-01-10 00:28:05,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278efd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:05, skipping insertion in model container [2022-01-10 00:28:05,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:28:05" (1/1) ... [2022-01-10 00:28:05,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:28:05,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:28:05,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c[2108,2121] [2022-01-10 00:28:05,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:28:05,937 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:28:05,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c[2108,2121] [2022-01-10 00:28:06,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:28:06,175 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:28:06,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06 WrapperNode [2022-01-10 00:28:06,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:28:06,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:28:06,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:28:06,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:28:06,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,338 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-01-10 00:28:06,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:28:06,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:28:06,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:28:06,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:28:06,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:28:06,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:28:06,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:28:06,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:28:06,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (1/1) ... [2022-01-10 00:28:06,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:28:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:28:06,554 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 00:28:06,559 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 00:28:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:28:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:28:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:28:06,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:28:06,624 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:28:06,625 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:28:08,698 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:28:08,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:28:08,711 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:28:08,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:28:08 BoogieIcfgContainer [2022-01-10 00:28:08,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:28:08,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:28:08,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:28:08,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:28:08,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:28:05" (1/3) ... [2022-01-10 00:28:08,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31428dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:28:08, skipping insertion in model container [2022-01-10 00:28:08,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:28:06" (2/3) ... [2022-01-10 00:28:08,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31428dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:28:08, skipping insertion in model container [2022-01-10 00:28:08,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:28:08" (3/3) ... [2022-01-10 00:28:08,719 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label12.c [2022-01-10 00:28:08,722 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:28:08,722 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:28:08,765 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:28:08,772 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 00:28:08,772 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:28:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 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 00:28:08,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 00:28:08,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:08,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:28:08,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:08,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash 156847385, now seen corresponding path program 1 times [2022-01-10 00:28:08,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:08,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19609986] [2022-01-10 00:28:08,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:08,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:08,952 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 00:28:08,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19609986] [2022-01-10 00:28:08,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19609986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:08,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:08,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:28:08,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105124855] [2022-01-10 00:28:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:08,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:08,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:08,980 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 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 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 00:28:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:11,529 INFO L93 Difference]: Finished difference Result 2221 states and 4282 transitions. [2022-01-10 00:28:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2022-01-10 00:28:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:11,543 INFO L225 Difference]: With dead ends: 2221 [2022-01-10 00:28:11,543 INFO L226 Difference]: Without dead ends: 1384 [2022-01-10 00:28:11,547 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 00:28:11,549 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 778 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:11,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 487 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:28:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-01-10 00:28:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-01-10 00:28:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.5994215473608098) internal successors, (2212), 1383 states have internal predecessors, (2212), 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 00:28:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2212 transitions. [2022-01-10 00:28:11,617 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2212 transitions. Word has length 17 [2022-01-10 00:28:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:11,617 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2212 transitions. [2022-01-10 00:28:11,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 00:28:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2212 transitions. [2022-01-10 00:28:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 00:28:11,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:11,619 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:28:11,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:28:11,620 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1277599882, now seen corresponding path program 1 times [2022-01-10 00:28:11,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:11,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749196251] [2022-01-10 00:28:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:11,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:28:11,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:11,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749196251] [2022-01-10 00:28:11,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749196251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:11,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:11,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:28:11,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803524252] [2022-01-10 00:28:11,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:11,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:11,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:11,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:11,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:11,720 INFO L87 Difference]: Start difference. First operand 1384 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 00:28:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:13,721 INFO L93 Difference]: Finished difference Result 4146 states and 6631 transitions. [2022-01-10 00:28:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:13,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 82 [2022-01-10 00:28:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:13,730 INFO L225 Difference]: With dead ends: 4146 [2022-01-10 00:28:13,730 INFO L226 Difference]: Without dead ends: 2764 [2022-01-10 00:28:13,732 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 00:28:13,733 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:13,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 529 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:28:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-01-10 00:28:13,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-01-10 00:28:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3503438291711907) internal successors, (3731), 2763 states have internal predecessors, (3731), 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 00:28:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3731 transitions. [2022-01-10 00:28:13,805 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3731 transitions. Word has length 82 [2022-01-10 00:28:13,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:13,806 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3731 transitions. [2022-01-10 00:28:13,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 00:28:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3731 transitions. [2022-01-10 00:28:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-10 00:28:13,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:13,815 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:28:13,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:28:13,816 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:13,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:13,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1639405966, now seen corresponding path program 1 times [2022-01-10 00:28:13,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:13,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495647458] [2022-01-10 00:28:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:13,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 00:28:14,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:14,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495647458] [2022-01-10 00:28:14,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495647458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:14,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:14,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:14,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457890501] [2022-01-10 00:28:14,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:14,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:28:14,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:14,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:28:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:28:14,011 INFO L87 Difference]: Start difference. First operand 2764 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 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 00:28:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:16,983 INFO L93 Difference]: Finished difference Result 7596 states and 9794 transitions. [2022-01-10 00:28:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:28:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 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 200 [2022-01-10 00:28:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:16,996 INFO L225 Difference]: With dead ends: 7596 [2022-01-10 00:28:16,997 INFO L226 Difference]: Without dead ends: 4834 [2022-01-10 00:28:16,999 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 00:28:17,000 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1872 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:17,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 641 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:28:17,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-01-10 00:28:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4144. [2022-01-10 00:28:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.2698527636978034) internal successors, (5261), 4143 states have internal predecessors, (5261), 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 00:28:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5261 transitions. [2022-01-10 00:28:17,052 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5261 transitions. Word has length 200 [2022-01-10 00:28:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:17,053 INFO L470 AbstractCegarLoop]: Abstraction has 4144 states and 5261 transitions. [2022-01-10 00:28:17,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 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 00:28:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5261 transitions. [2022-01-10 00:28:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-01-10 00:28:17,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:17,056 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:17,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:28:17,056 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash -331175084, now seen corresponding path program 1 times [2022-01-10 00:28:17,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:17,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276545212] [2022-01-10 00:28:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:17,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:28:17,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:17,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276545212] [2022-01-10 00:28:17,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276545212] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:28:17,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584866844] [2022-01-10 00:28:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:17,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:28:17,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:28:17,232 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 00:28:17,233 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 00:28:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:17,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:28:17,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:28:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:28:17,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:28:17,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584866844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:17,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:28:17,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 00:28:17,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988932229] [2022-01-10 00:28:17,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:17,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:17,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:17,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:28:17,686 INFO L87 Difference]: Start difference. First operand 4144 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 00:28:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:19,798 INFO L93 Difference]: Finished difference Result 12426 states and 15778 transitions. [2022-01-10 00:28:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 316 [2022-01-10 00:28:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:19,819 INFO L225 Difference]: With dead ends: 12426 [2022-01-10 00:28:19,820 INFO L226 Difference]: Without dead ends: 8284 [2022-01-10 00:28:19,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:28:19,830 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 706 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:19,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 148 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:28:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-01-10 00:28:19,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 7594. [2022-01-10 00:28:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.2641907019623337) internal successors, (9599), 7593 states have internal predecessors, (9599), 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 00:28:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 9599 transitions. [2022-01-10 00:28:19,926 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 9599 transitions. Word has length 316 [2022-01-10 00:28:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:19,928 INFO L470 AbstractCegarLoop]: Abstraction has 7594 states and 9599 transitions. [2022-01-10 00:28:19,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 00:28:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 9599 transitions. [2022-01-10 00:28:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-01-10 00:28:19,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:19,932 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:19,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:28:20,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:28:20,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:20,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1366238113, now seen corresponding path program 1 times [2022-01-10 00:28:20,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:20,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478421909] [2022-01-10 00:28:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:20,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 00:28:20,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:20,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478421909] [2022-01-10 00:28:20,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478421909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:20,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:20,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:28:20,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134984154] [2022-01-10 00:28:20,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:20,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:20,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:20,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:20,294 INFO L87 Difference]: Start difference. First operand 7594 states and 9599 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 2 states have internal predecessors, (318), 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 00:28:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:22,319 INFO L93 Difference]: Finished difference Result 20706 states and 26458 transitions. [2022-01-10 00:28:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 2 states have internal predecessors, (318), 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 401 [2022-01-10 00:28:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:22,351 INFO L225 Difference]: With dead ends: 20706 [2022-01-10 00:28:22,352 INFO L226 Difference]: Without dead ends: 13114 [2022-01-10 00:28:22,357 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 00:28:22,358 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 497 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 1073 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1073 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:22,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 116 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1073 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:28:22,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2022-01-10 00:28:22,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 12424. [2022-01-10 00:28:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.2751348305562265) internal successors, (15841), 12423 states have internal predecessors, (15841), 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 00:28:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 15841 transitions. [2022-01-10 00:28:22,511 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 15841 transitions. Word has length 401 [2022-01-10 00:28:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:22,514 INFO L470 AbstractCegarLoop]: Abstraction has 12424 states and 15841 transitions. [2022-01-10 00:28:22,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 2 states have internal predecessors, (318), 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 00:28:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 15841 transitions. [2022-01-10 00:28:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-01-10 00:28:22,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:22,521 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:22,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:28:22,521 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1514061348, now seen corresponding path program 1 times [2022-01-10 00:28:22,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:22,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192131017] [2022-01-10 00:28:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:22,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-01-10 00:28:22,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:22,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192131017] [2022-01-10 00:28:22,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192131017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:22,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:22,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:22,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916930197] [2022-01-10 00:28:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:22,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:22,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:22,616 INFO L87 Difference]: Start difference. First operand 12424 states and 15841 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 00:28:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:24,636 INFO L93 Difference]: Finished difference Result 24846 states and 31680 transitions. [2022-01-10 00:28:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 402 [2022-01-10 00:28:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:24,653 INFO L225 Difference]: With dead ends: 24846 [2022-01-10 00:28:24,653 INFO L226 Difference]: Without dead ends: 12424 [2022-01-10 00:28:24,662 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 00:28:24,662 INFO L933 BasicCegarLoop]: 1227 mSDtfsCounter, 679 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:24,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 1234 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:28:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12424 states. [2022-01-10 00:28:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12424 to 12424. [2022-01-10 00:28:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.167753360701924) internal successors, (14507), 12423 states have internal predecessors, (14507), 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 00:28:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 14507 transitions. [2022-01-10 00:28:24,785 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 14507 transitions. Word has length 402 [2022-01-10 00:28:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:24,786 INFO L470 AbstractCegarLoop]: Abstraction has 12424 states and 14507 transitions. [2022-01-10 00:28:24,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 00:28:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 14507 transitions. [2022-01-10 00:28:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-01-10 00:28:24,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:24,791 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:24,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:28:24,791 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:24,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash -676003512, now seen corresponding path program 1 times [2022-01-10 00:28:24,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:24,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462037551] [2022-01-10 00:28:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:24,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-01-10 00:28:24,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:24,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462037551] [2022-01-10 00:28:24,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462037551] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:28:24,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119158583] [2022-01-10 00:28:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:24,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:28:24,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:28:24,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:28:24,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:28:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:25,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:28:25,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:28:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-01-10 00:28:25,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:28:25,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119158583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:25,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:28:25,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 00:28:25,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954352388] [2022-01-10 00:28:25,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:25,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:25,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:25,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:28:25,590 INFO L87 Difference]: Start difference. First operand 12424 states and 14507 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 00:28:27,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:27,679 INFO L93 Difference]: Finished difference Result 30366 states and 35542 transitions. [2022-01-10 00:28:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:27,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 455 [2022-01-10 00:28:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:27,698 INFO L225 Difference]: With dead ends: 30366 [2022-01-10 00:28:27,698 INFO L226 Difference]: Without dead ends: 17944 [2022-01-10 00:28:27,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:28:27,708 INFO L933 BasicCegarLoop]: 1293 mSDtfsCounter, 676 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:27,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 1300 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:28:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17944 states. [2022-01-10 00:28:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17944 to 17944. [2022-01-10 00:28:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17943 states have (on average 1.1418937747310929) internal successors, (20489), 17943 states have internal predecessors, (20489), 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 00:28:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 20489 transitions. [2022-01-10 00:28:27,866 INFO L78 Accepts]: Start accepts. Automaton has 17944 states and 20489 transitions. Word has length 455 [2022-01-10 00:28:27,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:27,866 INFO L470 AbstractCegarLoop]: Abstraction has 17944 states and 20489 transitions. [2022-01-10 00:28:27,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 00:28:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 17944 states and 20489 transitions. [2022-01-10 00:28:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-01-10 00:28:27,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:27,872 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:28:27,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:28:28,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-10 00:28:28,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:28,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2124100764, now seen corresponding path program 1 times [2022-01-10 00:28:28,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:28,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59620870] [2022-01-10 00:28:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:28,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-01-10 00:28:28,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:28,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59620870] [2022-01-10 00:28:28,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59620870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:28,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:28,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:28,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953556603] [2022-01-10 00:28:28,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:28,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:28:28,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:28,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:28:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:28:28,202 INFO L87 Difference]: Start difference. First operand 17944 states and 20489 transitions. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 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 00:28:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:30,230 INFO L93 Difference]: Finished difference Result 36629 states and 41731 transitions. [2022-01-10 00:28:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:28:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 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 456 [2022-01-10 00:28:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:30,253 INFO L225 Difference]: With dead ends: 36629 [2022-01-10 00:28:30,253 INFO L226 Difference]: Without dead ends: 18634 [2022-01-10 00:28:30,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:28:30,266 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 515 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:30,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 640 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:28:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2022-01-10 00:28:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 18634. [2022-01-10 00:28:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18634 states, 18633 states have (on average 1.1080341329898566) internal successors, (20646), 18633 states have internal predecessors, (20646), 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 00:28:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18634 states to 18634 states and 20646 transitions. [2022-01-10 00:28:30,415 INFO L78 Accepts]: Start accepts. Automaton has 18634 states and 20646 transitions. Word has length 456 [2022-01-10 00:28:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:30,415 INFO L470 AbstractCegarLoop]: Abstraction has 18634 states and 20646 transitions. [2022-01-10 00:28:30,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 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 00:28:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 18634 states and 20646 transitions. [2022-01-10 00:28:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-01-10 00:28:30,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:30,419 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:30,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:28:30,419 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash -337321844, now seen corresponding path program 1 times [2022-01-10 00:28:30,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:30,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804525177] [2022-01-10 00:28:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:30,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 00:28:30,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:30,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804525177] [2022-01-10 00:28:30,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804525177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:30,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:30,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:30,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593888937] [2022-01-10 00:28:30,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:30,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:30,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:30,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:30,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:30,528 INFO L87 Difference]: Start difference. First operand 18634 states and 20646 transitions. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 00:28:32,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:32,203 INFO L93 Difference]: Finished difference Result 42786 states and 47506 transitions. [2022-01-10 00:28:32,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:32,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 504 [2022-01-10 00:28:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:32,230 INFO L225 Difference]: With dead ends: 42786 [2022-01-10 00:28:32,230 INFO L226 Difference]: Without dead ends: 24154 [2022-01-10 00:28:32,244 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 00:28:32,246 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 575 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:32,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 979 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:28:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24154 states. [2022-01-10 00:28:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24154 to 24154. [2022-01-10 00:28:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24154 states, 24153 states have (on average 1.0963027367200762) internal successors, (26479), 24153 states have internal predecessors, (26479), 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 00:28:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24154 states to 24154 states and 26479 transitions. [2022-01-10 00:28:32,428 INFO L78 Accepts]: Start accepts. Automaton has 24154 states and 26479 transitions. Word has length 504 [2022-01-10 00:28:32,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:32,429 INFO L470 AbstractCegarLoop]: Abstraction has 24154 states and 26479 transitions. [2022-01-10 00:28:32,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 00:28:32,429 INFO L276 IsEmpty]: Start isEmpty. Operand 24154 states and 26479 transitions. [2022-01-10 00:28:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-01-10 00:28:32,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:32,432 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:32,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:28:32,433 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1580411651, now seen corresponding path program 1 times [2022-01-10 00:28:32,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:32,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148254171] [2022-01-10 00:28:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:32,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-01-10 00:28:32,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:32,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148254171] [2022-01-10 00:28:32,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148254171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:32,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:32,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 00:28:32,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702761091] [2022-01-10 00:28:32,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:32,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:28:32,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:28:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:28:32,601 INFO L87 Difference]: Start difference. First operand 24154 states and 26479 transitions. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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 00:28:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:34,829 INFO L93 Difference]: Finished difference Result 57415 states and 63540 transitions. [2022-01-10 00:28:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:28:34,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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 511 [2022-01-10 00:28:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:34,860 INFO L225 Difference]: With dead ends: 57415 [2022-01-10 00:28:34,860 INFO L226 Difference]: Without dead ends: 28433 [2022-01-10 00:28:34,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 00:28:34,879 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 2045 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 1172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1172 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:34,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2045 Valid, 1120 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1172 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:28:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28433 states. [2022-01-10 00:28:35,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28433 to 26914. [2022-01-10 00:28:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26914 states, 26913 states have (on average 1.0542488760078772) internal successors, (28373), 26913 states have internal predecessors, (28373), 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 00:28:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26914 states to 26914 states and 28373 transitions. [2022-01-10 00:28:35,223 INFO L78 Accepts]: Start accepts. Automaton has 26914 states and 28373 transitions. Word has length 511 [2022-01-10 00:28:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:35,223 INFO L470 AbstractCegarLoop]: Abstraction has 26914 states and 28373 transitions. [2022-01-10 00:28:35,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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 00:28:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 26914 states and 28373 transitions. [2022-01-10 00:28:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-01-10 00:28:35,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:35,230 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:35,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:28:35,230 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1715312527, now seen corresponding path program 1 times [2022-01-10 00:28:35,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:35,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826699585] [2022-01-10 00:28:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:35,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-01-10 00:28:35,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:35,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826699585] [2022-01-10 00:28:35,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826699585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:35,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:35,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:35,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280652373] [2022-01-10 00:28:35,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:35,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:35,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:35,354 INFO L87 Difference]: Start difference. First operand 26914 states and 28373 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 00:28:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:36,768 INFO L93 Difference]: Finished difference Result 57966 states and 61234 transitions. [2022-01-10 00:28:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 576 [2022-01-10 00:28:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:36,800 INFO L225 Difference]: With dead ends: 57966 [2022-01-10 00:28:36,801 INFO L226 Difference]: Without dead ends: 31054 [2022-01-10 00:28:36,819 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 00:28:36,819 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 625 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:36,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 227 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:28:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2022-01-10 00:28:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 31054. [2022-01-10 00:28:37,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31054 states, 31053 states have (on average 1.05187904550285) internal successors, (32664), 31053 states have internal predecessors, (32664), 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 00:28:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31054 states to 31054 states and 32664 transitions. [2022-01-10 00:28:37,165 INFO L78 Accepts]: Start accepts. Automaton has 31054 states and 32664 transitions. Word has length 576 [2022-01-10 00:28:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:37,165 INFO L470 AbstractCegarLoop]: Abstraction has 31054 states and 32664 transitions. [2022-01-10 00:28:37,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 00:28:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 31054 states and 32664 transitions. [2022-01-10 00:28:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1106 [2022-01-10 00:28:37,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:37,175 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:37,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:28:37,175 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash -253438079, now seen corresponding path program 1 times [2022-01-10 00:28:37,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:37,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614392959] [2022-01-10 00:28:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:37,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 435 proven. 650 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 00:28:37,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:37,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614392959] [2022-01-10 00:28:37,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614392959] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:28:37,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864528840] [2022-01-10 00:28:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:37,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:28:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:28:37,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:28:37,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:28:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:37,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:28:37,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:28:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-01-10 00:28:39,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:28:39,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864528840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:39,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:28:39,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 00:28:39,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639645730] [2022-01-10 00:28:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:39,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:39,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:28:39,090 INFO L87 Difference]: Start difference. First operand 31054 states and 32664 transitions. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 00:28:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:40,620 INFO L93 Difference]: Finished difference Result 72456 states and 76862 transitions. [2022-01-10 00:28:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:40,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 1105 [2022-01-10 00:28:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:40,672 INFO L225 Difference]: With dead ends: 72456 [2022-01-10 00:28:40,672 INFO L226 Difference]: Without dead ends: 41404 [2022-01-10 00:28:40,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:28:40,693 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 654 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:40,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 164 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:28:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41404 states. [2022-01-10 00:28:40,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41404 to 41404. [2022-01-10 00:28:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41404 states, 41403 states have (on average 1.0541265125715529) internal successors, (43644), 41403 states have internal predecessors, (43644), 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 00:28:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41404 states to 41404 states and 43644 transitions. [2022-01-10 00:28:41,053 INFO L78 Accepts]: Start accepts. Automaton has 41404 states and 43644 transitions. Word has length 1105 [2022-01-10 00:28:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:41,053 INFO L470 AbstractCegarLoop]: Abstraction has 41404 states and 43644 transitions. [2022-01-10 00:28:41,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 00:28:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 41404 states and 43644 transitions. [2022-01-10 00:28:41,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2022-01-10 00:28:41,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:41,064 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:41,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 00:28:41,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:28:41,266 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash -354716265, now seen corresponding path program 1 times [2022-01-10 00:28:41,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:41,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056223182] [2022-01-10 00:28:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:41,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-01-10 00:28:41,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:41,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056223182] [2022-01-10 00:28:41,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056223182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:41,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:41,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:41,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549956117] [2022-01-10 00:28:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:41,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:28:41,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:41,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:28:41,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:28:41,768 INFO L87 Difference]: Start difference. First operand 41404 states and 43644 transitions. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 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 00:28:43,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:43,806 INFO L93 Difference]: Finished difference Result 82806 states and 87286 transitions. [2022-01-10 00:28:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:28:43,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 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 1144 [2022-01-10 00:28:43,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:43,842 INFO L225 Difference]: With dead ends: 82806 [2022-01-10 00:28:43,842 INFO L226 Difference]: Without dead ends: 41404 [2022-01-10 00:28:43,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:28:43,871 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 796 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:43,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 69 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:28:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41404 states. [2022-01-10 00:28:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41404 to 41404. [2022-01-10 00:28:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41404 states, 41403 states have (on average 1.0538849841798903) internal successors, (43634), 41403 states have internal predecessors, (43634), 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 00:28:44,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41404 states to 41404 states and 43634 transitions. [2022-01-10 00:28:44,201 INFO L78 Accepts]: Start accepts. Automaton has 41404 states and 43634 transitions. Word has length 1144 [2022-01-10 00:28:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:44,201 INFO L470 AbstractCegarLoop]: Abstraction has 41404 states and 43634 transitions. [2022-01-10 00:28:44,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 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 00:28:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 41404 states and 43634 transitions. [2022-01-10 00:28:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1176 [2022-01-10 00:28:44,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:44,213 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:44,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:28:44,213 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1580501616, now seen corresponding path program 1 times [2022-01-10 00:28:44,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:44,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99846371] [2022-01-10 00:28:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:44,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2022-01-10 00:28:44,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:44,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99846371] [2022-01-10 00:28:44,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99846371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:44,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:44,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:44,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971342396] [2022-01-10 00:28:44,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:44,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:44,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:44,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:44,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:44,658 INFO L87 Difference]: Start difference. First operand 41404 states and 43634 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 00:28:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:46,239 INFO L93 Difference]: Finished difference Result 82806 states and 87266 transitions. [2022-01-10 00:28:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:46,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 1175 [2022-01-10 00:28:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:46,280 INFO L225 Difference]: With dead ends: 82806 [2022-01-10 00:28:46,280 INFO L226 Difference]: Without dead ends: 41404 [2022-01-10 00:28:46,289 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 00:28:46,289 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 742 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:46,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 890 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:28:46,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41404 states. [2022-01-10 00:28:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41404 to 41404. [2022-01-10 00:28:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41404 states, 41403 states have (on average 1.0379441103301692) internal successors, (42974), 41403 states have internal predecessors, (42974), 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 00:28:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41404 states to 41404 states and 42974 transitions. [2022-01-10 00:28:46,575 INFO L78 Accepts]: Start accepts. Automaton has 41404 states and 42974 transitions. Word has length 1175 [2022-01-10 00:28:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:46,576 INFO L470 AbstractCegarLoop]: Abstraction has 41404 states and 42974 transitions. [2022-01-10 00:28:46,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 00:28:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 41404 states and 42974 transitions. [2022-01-10 00:28:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1190 [2022-01-10 00:28:46,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:46,588 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:46,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:28:46,588 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2102244307, now seen corresponding path program 1 times [2022-01-10 00:28:46,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:46,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279479109] [2022-01-10 00:28:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:46,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1361 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2022-01-10 00:28:46,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:46,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279479109] [2022-01-10 00:28:46,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279479109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:46,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:46,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:46,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827924355] [2022-01-10 00:28:46,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:46,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:46,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:46,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:46,969 INFO L87 Difference]: Start difference. First operand 41404 states and 42974 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 00:28:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:48,572 INFO L93 Difference]: Finished difference Result 96606 states and 100631 transitions. [2022-01-10 00:28:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:48,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 1189 [2022-01-10 00:28:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:48,641 INFO L225 Difference]: With dead ends: 96606 [2022-01-10 00:28:48,641 INFO L226 Difference]: Without dead ends: 55204 [2022-01-10 00:28:48,663 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 00:28:48,665 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:48,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 268 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:28:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55204 states. [2022-01-10 00:28:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55204 to 49684. [2022-01-10 00:28:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49684 states, 49683 states have (on average 1.035947909747801) internal successors, (51469), 49683 states have internal predecessors, (51469), 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 00:28:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49684 states to 49684 states and 51469 transitions. [2022-01-10 00:28:49,211 INFO L78 Accepts]: Start accepts. Automaton has 49684 states and 51469 transitions. Word has length 1189 [2022-01-10 00:28:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:49,211 INFO L470 AbstractCegarLoop]: Abstraction has 49684 states and 51469 transitions. [2022-01-10 00:28:49,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 00:28:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 49684 states and 51469 transitions. [2022-01-10 00:28:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2022-01-10 00:28:49,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:49,370 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:49,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:28:49,370 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:49,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2030243710, now seen corresponding path program 1 times [2022-01-10 00:28:49,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:49,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855632677] [2022-01-10 00:28:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:49,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 763 proven. 581 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-01-10 00:28:49,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855632677] [2022-01-10 00:28:49,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855632677] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:28:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381437032] [2022-01-10 00:28:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:49,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:28:49,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:28:49,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:28:49,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 00:28:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:50,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:28:50,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:28:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 896 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-10 00:28:51,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:28:51,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381437032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:28:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 00:28:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828883841] [2022-01-10 00:28:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:51,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:28:51,287 INFO L87 Difference]: Start difference. First operand 49684 states and 51469 transitions. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 00:28:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:52,879 INFO L93 Difference]: Finished difference Result 113166 states and 117664 transitions. [2022-01-10 00:28:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:52,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 1202 [2022-01-10 00:28:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:52,943 INFO L225 Difference]: With dead ends: 113166 [2022-01-10 00:28:52,944 INFO L226 Difference]: Without dead ends: 60034 [2022-01-10 00:28:52,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1202 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:28:52,974 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 583 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:52,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 879 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:28:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60034 states. [2022-01-10 00:28:53,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60034 to 59344. [2022-01-10 00:28:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59344 states, 59343 states have (on average 1.0360783917226968) internal successors, (61484), 59343 states have internal predecessors, (61484), 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 00:28:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59344 states to 59344 states and 61484 transitions. [2022-01-10 00:28:53,537 INFO L78 Accepts]: Start accepts. Automaton has 59344 states and 61484 transitions. Word has length 1202 [2022-01-10 00:28:53,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:53,537 INFO L470 AbstractCegarLoop]: Abstraction has 59344 states and 61484 transitions. [2022-01-10 00:28:53,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 00:28:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 59344 states and 61484 transitions. [2022-01-10 00:28:53,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1254 [2022-01-10 00:28:53,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:53,556 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:53,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 00:28:53,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-10 00:28:53,756 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:53,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1797483050, now seen corresponding path program 1 times [2022-01-10 00:28:53,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:53,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770022656] [2022-01-10 00:28:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:53,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 1187 trivial. 0 not checked. [2022-01-10 00:28:54,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:54,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770022656] [2022-01-10 00:28:54,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770022656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:54,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:54,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:54,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221625431] [2022-01-10 00:28:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:54,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:54,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:54,213 INFO L87 Difference]: Start difference. First operand 59344 states and 61484 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 00:28:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:55,750 INFO L93 Difference]: Finished difference Result 117996 states and 122275 transitions. [2022-01-10 00:28:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:55,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 1253 [2022-01-10 00:28:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:55,814 INFO L225 Difference]: With dead ends: 117996 [2022-01-10 00:28:55,814 INFO L226 Difference]: Without dead ends: 59344 [2022-01-10 00:28:55,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 00:28:55,848 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 779 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:55,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 746 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:28:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59344 states. [2022-01-10 00:28:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59344 to 59344. [2022-01-10 00:28:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59344 states, 59343 states have (on average 1.0330957315942908) internal successors, (61307), 59343 states have internal predecessors, (61307), 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 00:28:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59344 states to 59344 states and 61307 transitions. [2022-01-10 00:28:56,831 INFO L78 Accepts]: Start accepts. Automaton has 59344 states and 61307 transitions. Word has length 1253 [2022-01-10 00:28:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:56,831 INFO L470 AbstractCegarLoop]: Abstraction has 59344 states and 61307 transitions. [2022-01-10 00:28:56,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 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 00:28:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 59344 states and 61307 transitions. [2022-01-10 00:28:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1370 [2022-01-10 00:28:56,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:56,850 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:56,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 00:28:56,851 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:56,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:56,851 INFO L85 PathProgramCache]: Analyzing trace with hash 883945079, now seen corresponding path program 1 times [2022-01-10 00:28:56,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:56,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972295646] [2022-01-10 00:28:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:56,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:28:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2385 backedges. 1498 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2022-01-10 00:28:57,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:28:57,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972295646] [2022-01-10 00:28:57,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972295646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:28:57,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:28:57,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:28:57,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081633112] [2022-01-10 00:28:57,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:28:57,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:28:57,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:28:57,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:28:57,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:28:57,172 INFO L87 Difference]: Start difference. First operand 59344 states and 61307 transitions. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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 00:28:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:28:58,780 INFO L93 Difference]: Finished difference Result 117996 states and 121900 transitions. [2022-01-10 00:28:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:28:58,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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 1369 [2022-01-10 00:28:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:28:58,845 INFO L225 Difference]: With dead ends: 117996 [2022-01-10 00:28:58,846 INFO L226 Difference]: Without dead ends: 58654 [2022-01-10 00:28:58,883 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 00:28:58,884 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 553 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:28:58,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 935 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:28:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58654 states. [2022-01-10 00:28:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58654 to 56584. [2022-01-10 00:28:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56584 states, 56583 states have (on average 1.0291607019776259) internal successors, (58233), 56583 states have internal predecessors, (58233), 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 00:28:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56584 states to 56584 states and 58233 transitions. [2022-01-10 00:28:59,527 INFO L78 Accepts]: Start accepts. Automaton has 56584 states and 58233 transitions. Word has length 1369 [2022-01-10 00:28:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:28:59,528 INFO L470 AbstractCegarLoop]: Abstraction has 56584 states and 58233 transitions. [2022-01-10 00:28:59,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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 00:28:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 56584 states and 58233 transitions. [2022-01-10 00:28:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1434 [2022-01-10 00:28:59,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:28:59,553 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:59,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 00:28:59,553 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:28:59,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:28:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1123011724, now seen corresponding path program 1 times [2022-01-10 00:28:59,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:28:59,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111126848] [2022-01-10 00:28:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:28:59,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:28:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:29:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2564 backedges. 607 proven. 0 refuted. 0 times theorem prover too weak. 1957 trivial. 0 not checked. [2022-01-10 00:29:00,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:29:00,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111126848] [2022-01-10 00:29:00,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111126848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:29:00,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:29:00,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:29:00,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576154243] [2022-01-10 00:29:00,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:29:00,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:29:00,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:29:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:29:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:29:00,103 INFO L87 Difference]: Start difference. First operand 56584 states and 58233 transitions. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 00:29:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:29:01,567 INFO L93 Difference]: Finished difference Result 113856 states and 117177 transitions. [2022-01-10 00:29:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:29:01,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 1433 [2022-01-10 00:29:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:29:01,622 INFO L225 Difference]: With dead ends: 113856 [2022-01-10 00:29:01,622 INFO L226 Difference]: Without dead ends: 57274 [2022-01-10 00:29:01,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 00:29:01,648 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 645 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:29:01,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 761 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:29:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57274 states. [2022-01-10 00:29:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57274 to 57274. [2022-01-10 00:29:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57274 states, 57273 states have (on average 1.0260157491313533) internal successors, (58763), 57273 states have internal predecessors, (58763), 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 00:29:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57274 states to 57274 states and 58763 transitions. [2022-01-10 00:29:02,209 INFO L78 Accepts]: Start accepts. Automaton has 57274 states and 58763 transitions. Word has length 1433 [2022-01-10 00:29:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:29:02,210 INFO L470 AbstractCegarLoop]: Abstraction has 57274 states and 58763 transitions. [2022-01-10 00:29:02,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 00:29:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 57274 states and 58763 transitions. [2022-01-10 00:29:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1488 [2022-01-10 00:29:02,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:29:02,234 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:02,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 00:29:02,234 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:29:02,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:29:02,235 INFO L85 PathProgramCache]: Analyzing trace with hash -538484081, now seen corresponding path program 1 times [2022-01-10 00:29:02,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:29:02,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508677231] [2022-01-10 00:29:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:29:02,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:29:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:29:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 1522 proven. 0 refuted. 0 times theorem prover too weak. 1483 trivial. 0 not checked. [2022-01-10 00:29:02,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:29:02,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508677231] [2022-01-10 00:29:02,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508677231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:29:02,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:29:02,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:29:02,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253978418] [2022-01-10 00:29:02,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:29:02,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:29:02,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:29:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:29:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:29:02,728 INFO L87 Difference]: Start difference. First operand 57274 states and 58763 transitions. Second operand has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 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)