/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:17:14,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:17:14,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:17:14,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:17:14,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:17:14,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:17:14,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:17:14,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:17:14,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:17:14,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:17:14,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:17:14,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:17:14,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:17:14,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:17:14,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:17:14,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:17:14,987 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:17:14,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:17:14,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:17:14,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:17:14,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:17:14,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:17:14,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:17:14,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:17:14,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:17:14,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:17:14,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:17:14,990 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:17:14,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:17:14,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:17:14,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:17:15,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:17:15,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:17:15,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:17:15,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:17:15,203 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:17:15,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-01-10 02:17:15,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2157a086/2d02968b6e6b4d4ea029217c4769437f/FLAGb818ef77a [2022-01-10 02:17:15,774 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:17:15,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-01-10 02:17:15,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2157a086/2d02968b6e6b4d4ea029217c4769437f/FLAGb818ef77a [2022-01-10 02:17:15,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2157a086/2d02968b6e6b4d4ea029217c4769437f [2022-01-10 02:17:15,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:17:16,000 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:17:16,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:17:16,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:17:16,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:17:16,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:17:15" (1/1) ... [2022-01-10 02:17:16,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3541a1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:16, skipping insertion in model container [2022-01-10 02:17:16,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:17:15" (1/1) ... [2022-01-10 02:17:16,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:17:16,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:17:16,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[6524,6537] [2022-01-10 02:17:16,407 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[13585,13598] [2022-01-10 02:17:16,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:17:16,994 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:17:17,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[6524,6537] [2022-01-10 02:17:17,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[13585,13598] [2022-01-10 02:17:17,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:17:17,340 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:17:17,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17 WrapperNode [2022-01-10 02:17:17,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:17:17,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:17:17,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:17:17,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:17:17,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:17,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:17,583 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4974 [2022-01-10 02:17:17,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:17:17,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:17:17,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:17:17,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:17:17,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:17,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:17,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:17,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:17,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:17,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:17,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:18,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:17:18,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:17:18,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:17:18,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:17:18,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (1/1) ... [2022-01-10 02:17:18,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:17:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:17:18,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 02:17:18,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 02:17:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:17:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:17:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:17:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:17:18,291 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:17:18,292 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:17:21,149 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:17:21,173 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:17:21,173 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:17:21,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:17:21 BoogieIcfgContainer [2022-01-10 02:17:21,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:17:21,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:17:21,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:17:21,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:17:21,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:17:15" (1/3) ... [2022-01-10 02:17:21,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25422eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:17:21, skipping insertion in model container [2022-01-10 02:17:21,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:17:17" (2/3) ... [2022-01-10 02:17:21,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25422eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:17:21, skipping insertion in model container [2022-01-10 02:17:21,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:17:21" (3/3) ... [2022-01-10 02:17:21,182 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-01-10 02:17:21,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:17:21,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:17:21,226 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:17:21,232 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:17:21,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:17:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 02:17:21,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:21,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:21,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:21,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash 975463267, now seen corresponding path program 1 times [2022-01-10 02:17:21,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:21,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409061587] [2022-01-10 02:17:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:21,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:21,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:21,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409061587] [2022-01-10 02:17:21,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409061587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:21,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:21,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:17:21,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680700718] [2022-01-10 02:17:21,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:21,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 02:17:21,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 02:17:21,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 02:17:21,465 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 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 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:21,521 INFO L93 Difference]: Finished difference Result 1732 states and 3290 transitions. [2022-01-10 02:17:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 02:17:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2022-01-10 02:17:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:21,542 INFO L225 Difference]: With dead ends: 1732 [2022-01-10 02:17:21,542 INFO L226 Difference]: Without dead ends: 812 [2022-01-10 02:17:21,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 02:17:21,554 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:21,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-01-10 02:17:21,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-01-10 02:17:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8925925925925926) internal successors, (1533), 811 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2022-01-10 02:17:21,618 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2022-01-10 02:17:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:21,619 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2022-01-10 02:17:21,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2022-01-10 02:17:21,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 02:17:21,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:21,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:21,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:17:21,620 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:21,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:21,621 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2022-01-10 02:17:21,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:21,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848685545] [2022-01-10 02:17:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:21,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:21,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:21,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848685545] [2022-01-10 02:17:21,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848685545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:21,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:21,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:17:21,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435722430] [2022-01-10 02:17:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:21,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:17:21,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:17:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:17:21,671 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:21,726 INFO L93 Difference]: Finished difference Result 852 states and 1593 transitions. [2022-01-10 02:17:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:17:21,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2022-01-10 02:17:21,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:21,730 INFO L225 Difference]: With dead ends: 852 [2022-01-10 02:17:21,730 INFO L226 Difference]: Without dead ends: 812 [2022-01-10 02:17:21,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:17:21,731 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 3 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6105 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:21,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6105 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:21,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-01-10 02:17:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-01-10 02:17:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8728395061728396) internal successors, (1517), 811 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2022-01-10 02:17:21,750 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2022-01-10 02:17:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:21,750 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2022-01-10 02:17:21,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2022-01-10 02:17:21,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 02:17:21,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:21,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:21,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:17:21,752 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2022-01-10 02:17:21,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:21,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489905558] [2022-01-10 02:17:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:21,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:21,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489905558] [2022-01-10 02:17:21,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489905558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:21,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:21,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:17:21,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405667240] [2022-01-10 02:17:21,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:21,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:17:21,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:21,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:17:21,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:21,801 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:21,821 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2022-01-10 02:17:21,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:17:21,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2022-01-10 02:17:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:21,825 INFO L225 Difference]: With dead ends: 878 [2022-01-10 02:17:21,825 INFO L226 Difference]: Without dead ends: 842 [2022-01-10 02:17:21,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:21,826 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:21,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-01-10 02:17:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-01-10 02:17:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.8627684964200477) internal successors, (1561), 839 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2022-01-10 02:17:21,900 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2022-01-10 02:17:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:21,900 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2022-01-10 02:17:21,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2022-01-10 02:17:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 02:17:21,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:21,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:21,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:17:21,902 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:21,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2022-01-10 02:17:21,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:21,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592479002] [2022-01-10 02:17:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:21,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:21,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:21,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592479002] [2022-01-10 02:17:21,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592479002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:21,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:21,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:17:21,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807066085] [2022-01-10 02:17:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:21,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:17:21,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:17:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:17:21,961 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:22,035 INFO L93 Difference]: Finished difference Result 1224 states and 2161 transitions. [2022-01-10 02:17:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:17:22,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2022-01-10 02:17:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:22,039 INFO L225 Difference]: With dead ends: 1224 [2022-01-10 02:17:22,039 INFO L226 Difference]: Without dead ends: 1160 [2022-01-10 02:17:22,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:17:22,040 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:22,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-01-10 02:17:22,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 902. [2022-01-10 02:17:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 900 states have (on average 1.84) internal successors, (1656), 901 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1656 transitions. [2022-01-10 02:17:22,062 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1656 transitions. Word has length 41 [2022-01-10 02:17:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:22,063 INFO L470 AbstractCegarLoop]: Abstraction has 902 states and 1656 transitions. [2022-01-10 02:17:22,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1656 transitions. [2022-01-10 02:17:22,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 02:17:22,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:22,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:22,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:17:22,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2022-01-10 02:17:22,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:22,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494454092] [2022-01-10 02:17:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:22,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:22,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:22,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494454092] [2022-01-10 02:17:22,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494454092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:22,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:22,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:17:22,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776518096] [2022-01-10 02:17:22,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:22,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:17:22,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:22,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:17:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:22,099 INFO L87 Difference]: Start difference. First operand 902 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:22,125 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2022-01-10 02:17:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:17:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-01-10 02:17:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:22,129 INFO L225 Difference]: With dead ends: 1089 [2022-01-10 02:17:22,129 INFO L226 Difference]: Without dead ends: 963 [2022-01-10 02:17:22,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:22,130 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:22,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:22,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-01-10 02:17:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-01-10 02:17:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8185610010427529) internal successors, (1744), 960 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1744 transitions. [2022-01-10 02:17:22,148 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1744 transitions. Word has length 43 [2022-01-10 02:17:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:22,149 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1744 transitions. [2022-01-10 02:17:22,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1744 transitions. [2022-01-10 02:17:22,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 02:17:22,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:22,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:22,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:17:22,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:22,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2022-01-10 02:17:22,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:22,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210243430] [2022-01-10 02:17:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:22,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:22,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:22,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210243430] [2022-01-10 02:17:22,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210243430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:22,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:22,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:17:22,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633916066] [2022-01-10 02:17:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:22,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:17:22,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:22,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:17:22,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:17:22,232 INFO L87 Difference]: Start difference. First operand 961 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:22,294 INFO L93 Difference]: Finished difference Result 1146 states and 2026 transitions. [2022-01-10 02:17:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:17:22,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2022-01-10 02:17:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:22,298 INFO L225 Difference]: With dead ends: 1146 [2022-01-10 02:17:22,298 INFO L226 Difference]: Without dead ends: 963 [2022-01-10 02:17:22,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:17:22,299 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 3002 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3002 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:22,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3002 Valid, 1636 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:22,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-01-10 02:17:22,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-01-10 02:17:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8154327424400416) internal successors, (1741), 960 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1741 transitions. [2022-01-10 02:17:22,319 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1741 transitions. Word has length 43 [2022-01-10 02:17:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:22,319 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1741 transitions. [2022-01-10 02:17:22,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1741 transitions. [2022-01-10 02:17:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 02:17:22,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:22,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:22,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:17:22,320 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2022-01-10 02:17:22,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:22,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802120730] [2022-01-10 02:17:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:22,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:22,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:22,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802120730] [2022-01-10 02:17:22,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802120730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:22,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:22,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:17:22,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275726132] [2022-01-10 02:17:22,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:22,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:17:22,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:17:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:22,346 INFO L87 Difference]: Start difference. First operand 961 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:22,375 INFO L93 Difference]: Finished difference Result 1291 states and 2237 transitions. [2022-01-10 02:17:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:17:22,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-01-10 02:17:22,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:22,381 INFO L225 Difference]: With dead ends: 1291 [2022-01-10 02:17:22,381 INFO L226 Difference]: Without dead ends: 1108 [2022-01-10 02:17:22,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:22,382 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:22,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-01-10 02:17:22,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2022-01-10 02:17:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.7681159420289856) internal successors, (1952), 1105 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1952 transitions. [2022-01-10 02:17:22,411 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1952 transitions. Word has length 43 [2022-01-10 02:17:22,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:22,412 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 1952 transitions. [2022-01-10 02:17:22,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1952 transitions. [2022-01-10 02:17:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 02:17:22,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:22,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:22,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:17:22,413 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:22,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2022-01-10 02:17:22,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:22,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343778440] [2022-01-10 02:17:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:22,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:22,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:22,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343778440] [2022-01-10 02:17:22,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343778440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:22,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:22,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:17:22,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844604097] [2022-01-10 02:17:22,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:22,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:17:22,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:22,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:17:22,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:22,451 INFO L87 Difference]: Start difference. First operand 1106 states and 1952 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:22,487 INFO L93 Difference]: Finished difference Result 1690 states and 2810 transitions. [2022-01-10 02:17:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:17:22,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-01-10 02:17:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:22,492 INFO L225 Difference]: With dead ends: 1690 [2022-01-10 02:17:22,492 INFO L226 Difference]: Without dead ends: 1362 [2022-01-10 02:17:22,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:22,495 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:22,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-01-10 02:17:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2022-01-10 02:17:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.6995581737849779) internal successors, (2308), 1359 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2308 transitions. [2022-01-10 02:17:22,540 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2308 transitions. Word has length 43 [2022-01-10 02:17:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:22,540 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 2308 transitions. [2022-01-10 02:17:22,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2308 transitions. [2022-01-10 02:17:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:17:22,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:22,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:22,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:17:22,543 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2022-01-10 02:17:22,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:22,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899115954] [2022-01-10 02:17:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:22,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:22,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:22,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899115954] [2022-01-10 02:17:22,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899115954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:22,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:22,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:17:22,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281196296] [2022-01-10 02:17:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:22,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:17:22,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:17:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:17:22,630 INFO L87 Difference]: Start difference. First operand 1360 states and 2308 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:22,780 INFO L93 Difference]: Finished difference Result 1883 states and 3036 transitions. [2022-01-10 02:17:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:17:22,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 44 [2022-01-10 02:17:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:22,787 INFO L225 Difference]: With dead ends: 1883 [2022-01-10 02:17:22,787 INFO L226 Difference]: Without dead ends: 1881 [2022-01-10 02:17:22,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:17:22,789 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 424 mSDsluCounter, 8903 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 10434 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:22,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 10434 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2022-01-10 02:17:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1408. [2022-01-10 02:17:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1406 states have (on average 1.6728307254623045) internal successors, (2352), 1407 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2352 transitions. [2022-01-10 02:17:22,844 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2352 transitions. Word has length 44 [2022-01-10 02:17:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:22,844 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 2352 transitions. [2022-01-10 02:17:22,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2352 transitions. [2022-01-10 02:17:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 02:17:22,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:22,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:22,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:17:22,846 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:22,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:22,846 INFO L85 PathProgramCache]: Analyzing trace with hash 254202953, now seen corresponding path program 1 times [2022-01-10 02:17:22,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:22,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320148627] [2022-01-10 02:17:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:22,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:22,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:22,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320148627] [2022-01-10 02:17:22,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320148627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:22,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:22,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:17:22,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535776300] [2022-01-10 02:17:22,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:22,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:17:22,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:17:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:22,910 INFO L87 Difference]: Start difference. First operand 1408 states and 2352 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:25,441 INFO L93 Difference]: Finished difference Result 2912 states and 5225 transitions. [2022-01-10 02:17:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:17:25,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2022-01-10 02:17:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:25,448 INFO L225 Difference]: With dead ends: 2912 [2022-01-10 02:17:25,448 INFO L226 Difference]: Without dead ends: 2159 [2022-01-10 02:17:25,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:25,450 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 832 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:25,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 155 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 02:17:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2022-01-10 02:17:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 2159. [2022-01-10 02:17:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 2157 states have (on average 1.727862772369031) internal successors, (3727), 2158 states have internal predecessors, (3727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3727 transitions. [2022-01-10 02:17:25,516 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3727 transitions. Word has length 61 [2022-01-10 02:17:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:25,517 INFO L470 AbstractCegarLoop]: Abstraction has 2159 states and 3727 transitions. [2022-01-10 02:17:25,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3727 transitions. [2022-01-10 02:17:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 02:17:25,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:25,518 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:25,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:17:25,519 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2022-01-10 02:17:25,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:25,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007778233] [2022-01-10 02:17:25,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:25,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 02:17:25,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:25,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007778233] [2022-01-10 02:17:25,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007778233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:25,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:25,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:17:25,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963137161] [2022-01-10 02:17:25,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:25,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:17:25,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:17:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:17:25,582 INFO L87 Difference]: Start difference. First operand 2159 states and 3727 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:25,727 INFO L93 Difference]: Finished difference Result 4187 states and 6575 transitions. [2022-01-10 02:17:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:17:25,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 64 [2022-01-10 02:17:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:25,738 INFO L225 Difference]: With dead ends: 4187 [2022-01-10 02:17:25,738 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 02:17:25,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:17:25,742 INFO L933 BasicCegarLoop]: 1563 mSDtfsCounter, 3073 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:25,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3073 Valid, 3184 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 02:17:25,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2787. [2022-01-10 02:17:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2785 states have (on average 1.6527827648114901) internal successors, (4603), 2786 states have internal predecessors, (4603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4603 transitions. [2022-01-10 02:17:25,833 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4603 transitions. Word has length 64 [2022-01-10 02:17:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:25,834 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 4603 transitions. [2022-01-10 02:17:25,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4603 transitions. [2022-01-10 02:17:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 02:17:25,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:25,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:25,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:17:25,838 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:25,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2022-01-10 02:17:25,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:25,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005827621] [2022-01-10 02:17:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:25,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 02:17:25,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:25,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005827621] [2022-01-10 02:17:25,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005827621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:25,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:25,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:17:25,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699158740] [2022-01-10 02:17:25,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:25,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:17:25,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:17:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:17:25,890 INFO L87 Difference]: Start difference. First operand 2787 states and 4603 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:26,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:26,052 INFO L93 Difference]: Finished difference Result 4815 states and 7451 transitions. [2022-01-10 02:17:26,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:17:26,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 64 [2022-01-10 02:17:26,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:26,064 INFO L225 Difference]: With dead ends: 4815 [2022-01-10 02:17:26,064 INFO L226 Difference]: Without dead ends: 4185 [2022-01-10 02:17:26,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:17:26,066 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 3065 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:26,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3065 Valid, 3213 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2022-01-10 02:17:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3731. [2022-01-10 02:17:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 3729 states have (on average 1.584070796460177) internal successors, (5907), 3730 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5907 transitions. [2022-01-10 02:17:26,284 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5907 transitions. Word has length 64 [2022-01-10 02:17:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:26,284 INFO L470 AbstractCegarLoop]: Abstraction has 3731 states and 5907 transitions. [2022-01-10 02:17:26,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5907 transitions. [2022-01-10 02:17:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 02:17:26,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:26,285 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:26,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:17:26,285 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2022-01-10 02:17:26,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:26,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680276868] [2022-01-10 02:17:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:26,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:17:26,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:26,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680276868] [2022-01-10 02:17:26,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680276868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:26,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:26,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:17:26,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291272500] [2022-01-10 02:17:26,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:26,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:17:26,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:26,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:17:26,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:17:26,323 INFO L87 Difference]: Start difference. First operand 3731 states and 5907 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:26,495 INFO L93 Difference]: Finished difference Result 5083 states and 7831 transitions. [2022-01-10 02:17:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:17:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 64 [2022-01-10 02:17:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:26,514 INFO L225 Difference]: With dead ends: 5083 [2022-01-10 02:17:26,514 INFO L226 Difference]: Without dead ends: 4633 [2022-01-10 02:17:26,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:17:26,518 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 3064 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3064 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:26,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3064 Valid, 3189 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:26,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2022-01-10 02:17:26,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 4179. [2022-01-10 02:17:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 4177 states have (on average 1.5654776155135264) internal successors, (6539), 4178 states have internal predecessors, (6539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6539 transitions. [2022-01-10 02:17:26,697 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6539 transitions. Word has length 64 [2022-01-10 02:17:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:26,697 INFO L470 AbstractCegarLoop]: Abstraction has 4179 states and 6539 transitions. [2022-01-10 02:17:26,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6539 transitions. [2022-01-10 02:17:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:17:26,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:26,702 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] [2022-01-10 02:17:26,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:17:26,702 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2022-01-10 02:17:26,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:26,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564965610] [2022-01-10 02:17:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:26,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:26,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:26,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564965610] [2022-01-10 02:17:26,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564965610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:26,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:26,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:17:26,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061128888] [2022-01-10 02:17:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:26,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:17:26,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:17:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:26,748 INFO L87 Difference]: Start difference. First operand 4179 states and 6539 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:26,879 INFO L93 Difference]: Finished difference Result 6831 states and 10241 transitions. [2022-01-10 02:17:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:17:26,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 02:17:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:26,890 INFO L225 Difference]: With dead ends: 6831 [2022-01-10 02:17:26,890 INFO L226 Difference]: Without dead ends: 4181 [2022-01-10 02:17:26,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:26,893 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:26,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2022-01-10 02:17:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4179. [2022-01-10 02:17:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 4177 states have (on average 1.5535073018913095) internal successors, (6489), 4178 states have internal predecessors, (6489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6489 transitions. [2022-01-10 02:17:27,150 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6489 transitions. Word has length 65 [2022-01-10 02:17:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:27,150 INFO L470 AbstractCegarLoop]: Abstraction has 4179 states and 6489 transitions. [2022-01-10 02:17:27,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6489 transitions. [2022-01-10 02:17:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:17:27,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:27,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:27,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:17:27,152 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:27,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2022-01-10 02:17:27,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:27,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841398306] [2022-01-10 02:17:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:27,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:27,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:27,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841398306] [2022-01-10 02:17:27,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841398306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:27,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:27,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:17:27,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119456163] [2022-01-10 02:17:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:27,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:17:27,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:17:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:27,184 INFO L87 Difference]: Start difference. First operand 4179 states and 6489 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:27,285 INFO L93 Difference]: Finished difference Result 5507 states and 8316 transitions. [2022-01-10 02:17:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:17:27,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 02:17:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:27,290 INFO L225 Difference]: With dead ends: 5507 [2022-01-10 02:17:27,290 INFO L226 Difference]: Without dead ends: 2857 [2022-01-10 02:17:27,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:27,293 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:27,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2022-01-10 02:17:27,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2855. [2022-01-10 02:17:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2853 states have (on average 1.6260077111812128) internal successors, (4639), 2854 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 4639 transitions. [2022-01-10 02:17:27,395 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 4639 transitions. Word has length 65 [2022-01-10 02:17:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:27,395 INFO L470 AbstractCegarLoop]: Abstraction has 2855 states and 4639 transitions. [2022-01-10 02:17:27,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:27,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 4639 transitions. [2022-01-10 02:17:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:17:27,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:27,396 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:27,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:17:27,397 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:27,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2022-01-10 02:17:27,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:27,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347800303] [2022-01-10 02:17:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:27,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:27,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:27,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347800303] [2022-01-10 02:17:27,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347800303] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:17:27,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955559439] [2022-01-10 02:17:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:27,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:17:27,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:17:27,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:17:27,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 02:17:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:27,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:17:27,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:17:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:17:27,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:17:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:17:28,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955559439] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:17:28,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:17:28,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-01-10 02:17:28,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630988230] [2022-01-10 02:17:28,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:17:28,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 02:17:28,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:28,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 02:17:28,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:17:28,165 INFO L87 Difference]: Start difference. First operand 2855 states and 4639 transitions. Second operand has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:31,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:31,732 INFO L93 Difference]: Finished difference Result 14720 states and 20384 transitions. [2022-01-10 02:17:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-10 02:17:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 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 65 [2022-01-10 02:17:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:31,798 INFO L225 Difference]: With dead ends: 14720 [2022-01-10 02:17:31,798 INFO L226 Difference]: Without dead ends: 13394 [2022-01-10 02:17:31,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3478 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1620, Invalid=8082, Unknown=0, NotChecked=0, Total=9702 [2022-01-10 02:17:31,805 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 15583 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15583 SdHoareTripleChecker+Valid, 6808 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:31,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15583 Valid, 6808 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:17:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13394 states. [2022-01-10 02:17:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13394 to 9336. [2022-01-10 02:17:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9336 states, 9334 states have (on average 1.4028283694021855) internal successors, (13094), 9335 states have internal predecessors, (13094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9336 states to 9336 states and 13094 transitions. [2022-01-10 02:17:32,283 INFO L78 Accepts]: Start accepts. Automaton has 9336 states and 13094 transitions. Word has length 65 [2022-01-10 02:17:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:32,283 INFO L470 AbstractCegarLoop]: Abstraction has 9336 states and 13094 transitions. [2022-01-10 02:17:32,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.88888888888889) internal successors, (178), 18 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 9336 states and 13094 transitions. [2022-01-10 02:17:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:17:32,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:32,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:32,317 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 02:17:32,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-10 02:17:32,500 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash 752221610, now seen corresponding path program 1 times [2022-01-10 02:17:32,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:32,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951678358] [2022-01-10 02:17:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:32,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:32,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:32,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951678358] [2022-01-10 02:17:32,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951678358] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:17:32,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829611229] [2022-01-10 02:17:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:32,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:17:32,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:17:32,627 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 02:17:32,628 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 02:17:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:32,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 02:17:32,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:17:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:33,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:17:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:33,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829611229] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:17:33,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:17:33,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-01-10 02:17:33,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302518052] [2022-01-10 02:17:33,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:17:33,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-10 02:17:33,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-10 02:17:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-01-10 02:17:33,727 INFO L87 Difference]: Start difference. First operand 9336 states and 13094 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:47,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:47,081 INFO L93 Difference]: Finished difference Result 122840 states and 159267 transitions. [2022-01-10 02:17:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-10 02:17:47,081 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 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 66 [2022-01-10 02:17:47,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:47,340 INFO L225 Difference]: With dead ends: 122840 [2022-01-10 02:17:47,340 INFO L226 Difference]: Without dead ends: 115033 [2022-01-10 02:17:47,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7739 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3290, Invalid=19060, Unknown=0, NotChecked=0, Total=22350 [2022-01-10 02:17:47,385 INFO L933 BasicCegarLoop]: 1623 mSDtfsCounter, 21867 mSDsluCounter, 10821 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21867 SdHoareTripleChecker+Valid, 12444 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:47,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21867 Valid, 12444 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:17:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115033 states. [2022-01-10 02:17:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115033 to 40266. [2022-01-10 02:17:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40266 states, 40264 states have (on average 1.3093333995628849) internal successors, (52719), 40265 states have internal predecessors, (52719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40266 states to 40266 states and 52719 transitions. [2022-01-10 02:17:51,738 INFO L78 Accepts]: Start accepts. Automaton has 40266 states and 52719 transitions. Word has length 66 [2022-01-10 02:17:51,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:51,739 INFO L470 AbstractCegarLoop]: Abstraction has 40266 states and 52719 transitions. [2022-01-10 02:17:51,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:51,739 INFO L276 IsEmpty]: Start isEmpty. Operand 40266 states and 52719 transitions. [2022-01-10 02:17:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:17:51,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:51,741 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:51,774 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 02:17:51,955 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,SelfDestructingSolverStorable16 [2022-01-10 02:17:51,956 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:51,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:51,956 INFO L85 PathProgramCache]: Analyzing trace with hash -434236462, now seen corresponding path program 1 times [2022-01-10 02:17:51,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:51,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191157625] [2022-01-10 02:17:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:51,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:17:51,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191157625] [2022-01-10 02:17:51,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191157625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:51,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:51,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:17:51,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934775565] [2022-01-10 02:17:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:51,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:17:51,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:17:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:51,992 INFO L87 Difference]: Start difference. First operand 40266 states and 52719 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:53,923 INFO L93 Difference]: Finished difference Result 58505 states and 76020 transitions. [2022-01-10 02:17:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:17:53,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-10 02:17:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:54,000 INFO L225 Difference]: With dead ends: 58505 [2022-01-10 02:17:54,001 INFO L226 Difference]: Without dead ends: 19768 [2022-01-10 02:17:54,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:17:54,037 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 17 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:54,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 3021 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19768 states. [2022-01-10 02:17:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19768 to 18389. [2022-01-10 02:17:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18389 states, 18387 states have (on average 1.3043998477184968) internal successors, (23984), 18388 states have internal predecessors, (23984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18389 states to 18389 states and 23984 transitions. [2022-01-10 02:17:55,615 INFO L78 Accepts]: Start accepts. Automaton has 18389 states and 23984 transitions. Word has length 66 [2022-01-10 02:17:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:55,615 INFO L470 AbstractCegarLoop]: Abstraction has 18389 states and 23984 transitions. [2022-01-10 02:17:55,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 18389 states and 23984 transitions. [2022-01-10 02:17:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:17:55,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:55,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:55,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:17:55,617 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:55,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1433407838, now seen corresponding path program 1 times [2022-01-10 02:17:55,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:55,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296621363] [2022-01-10 02:17:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:55,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:17:55,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:55,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296621363] [2022-01-10 02:17:55,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296621363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:55,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:55,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:17:55,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544953909] [2022-01-10 02:17:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:55,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:17:55,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:55,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:17:55,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:17:55,665 INFO L87 Difference]: Start difference. First operand 18389 states and 23984 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:57,112 INFO L93 Difference]: Finished difference Result 32532 states and 41855 transitions. [2022-01-10 02:17:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:17:57,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 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 66 [2022-01-10 02:17:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:57,129 INFO L225 Difference]: With dead ends: 32532 [2022-01-10 02:17:57,129 INFO L226 Difference]: Without dead ends: 15749 [2022-01-10 02:17:57,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:17:57,142 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 4498 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:57,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 2965 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15749 states. [2022-01-10 02:17:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15749 to 15749. [2022-01-10 02:17:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15749 states, 15747 states have (on average 1.2927541753984886) internal successors, (20357), 15748 states have internal predecessors, (20357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15749 states to 15749 states and 20357 transitions. [2022-01-10 02:17:58,620 INFO L78 Accepts]: Start accepts. Automaton has 15749 states and 20357 transitions. Word has length 66 [2022-01-10 02:17:58,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:17:58,620 INFO L470 AbstractCegarLoop]: Abstraction has 15749 states and 20357 transitions. [2022-01-10 02:17:58,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 15749 states and 20357 transitions. [2022-01-10 02:17:58,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:17:58,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:17:58,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:17:58,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:17:58,622 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:17:58,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:17:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1275703454, now seen corresponding path program 1 times [2022-01-10 02:17:58,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:17:58,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390037634] [2022-01-10 02:17:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:17:58,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:17:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:17:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 02:17:58,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:17:58,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390037634] [2022-01-10 02:17:58,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390037634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:17:58,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:17:58,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:17:58,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860288141] [2022-01-10 02:17:58,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:17:58,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:17:58,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:17:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:17:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:17:58,656 INFO L87 Difference]: Start difference. First operand 15749 states and 20357 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:17:59,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:17:59,833 INFO L93 Difference]: Finished difference Result 26292 states and 33384 transitions. [2022-01-10 02:17:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:17:59,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 66 [2022-01-10 02:17:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:17:59,845 INFO L225 Difference]: With dead ends: 26292 [2022-01-10 02:17:59,845 INFO L226 Difference]: Without dead ends: 12185 [2022-01-10 02:17:59,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:17:59,854 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 4546 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4546 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:17:59,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4546 Valid, 2952 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:17:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12185 states. [2022-01-10 02:18:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12185 to 12185. [2022-01-10 02:18:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12185 states, 12183 states have (on average 1.2895017647541656) internal successors, (15710), 12184 states have internal predecessors, (15710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:18:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12185 states to 12185 states and 15710 transitions. [2022-01-10 02:18:00,936 INFO L78 Accepts]: Start accepts. Automaton has 12185 states and 15710 transitions. Word has length 66 [2022-01-10 02:18:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:18:00,936 INFO L470 AbstractCegarLoop]: Abstraction has 12185 states and 15710 transitions. [2022-01-10 02:18:00,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:18:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 12185 states and 15710 transitions. [2022-01-10 02:18:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:18:00,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:18:00,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:18:00,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 02:18:00,937 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:18:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:18:00,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1486365826, now seen corresponding path program 1 times [2022-01-10 02:18:00,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:18:00,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312437146] [2022-01-10 02:18:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:18:00,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:18:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:18:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:18:00,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:18:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312437146] [2022-01-10 02:18:00,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312437146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:18:00,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:18:00,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:18:00,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12953779] [2022-01-10 02:18:00,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:18:00,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:18:00,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:18:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:18:00,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:18:00,968 INFO L87 Difference]: Start difference. First operand 12185 states and 15710 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:18:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:18:01,924 INFO L93 Difference]: Finished difference Result 20487 states and 25827 transitions. [2022-01-10 02:18:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:18:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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 66 [2022-01-10 02:18:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:18:01,934 INFO L225 Difference]: With dead ends: 20487 [2022-01-10 02:18:01,934 INFO L226 Difference]: Without dead ends: 9867 [2022-01-10 02:18:01,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:18:01,941 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 4551 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4551 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:18:01,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4551 Valid, 2950 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:18:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2022-01-10 02:18:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 9867. [2022-01-10 02:18:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9867 states, 9865 states have (on average 1.298428788646731) internal successors, (12809), 9866 states have internal predecessors, (12809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:18:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9867 states to 9867 states and 12809 transitions. [2022-01-10 02:18:02,854 INFO L78 Accepts]: Start accepts. Automaton has 9867 states and 12809 transitions. Word has length 66 [2022-01-10 02:18:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:18:02,854 INFO L470 AbstractCegarLoop]: Abstraction has 9867 states and 12809 transitions. [2022-01-10 02:18:02,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:18:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 9867 states and 12809 transitions. [2022-01-10 02:18:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 02:18:02,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:18:02,856 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:18:02,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:18:02,856 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:18:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:18:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash -791645332, now seen corresponding path program 1 times [2022-01-10 02:18:02,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:18:02,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890496949] [2022-01-10 02:18:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:18:02,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:18:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:18:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:18:03,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:18:03,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890496949] [2022-01-10 02:18:03,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890496949] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:18:03,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664699379] [2022-01-10 02:18:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:18:03,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:18:03,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:18:03,143 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 02:18:03,144 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 02:18:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:18:03,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 02:18:03,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:18:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:18:04,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:18:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:18:05,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664699379] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:18:05,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:18:05,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 31 [2022-01-10 02:18:05,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869124587] [2022-01-10 02:18:05,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:18:05,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-10 02:18:05,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:18:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-10 02:18:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-01-10 02:18:05,471 INFO L87 Difference]: Start difference. First operand 9867 states and 12809 transitions. Second operand has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:18:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:18:14,056 INFO L93 Difference]: Finished difference Result 19295 states and 23938 transitions. [2022-01-10 02:18:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-10 02:18:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 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 67 [2022-01-10 02:18:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:18:14,070 INFO L225 Difference]: With dead ends: 19295 [2022-01-10 02:18:14,070 INFO L226 Difference]: Without dead ends: 13951 [2022-01-10 02:18:14,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3273 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1888, Invalid=9884, Unknown=0, NotChecked=0, Total=11772 [2022-01-10 02:18:14,077 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 10217 mSDsluCounter, 22927 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10217 SdHoareTripleChecker+Valid, 24655 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:18:14,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10217 Valid, 24655 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:18:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13951 states. [2022-01-10 02:18:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13951 to 6941. [2022-01-10 02:18:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6941 states, 6939 states have (on average 1.33852140077821) internal successors, (9288), 6940 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:18:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 9288 transitions. [2022-01-10 02:18:14,876 INFO L78 Accepts]: Start accepts. Automaton has 6941 states and 9288 transitions. Word has length 67 [2022-01-10 02:18:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:18:14,876 INFO L470 AbstractCegarLoop]: Abstraction has 6941 states and 9288 transitions. [2022-01-10 02:18:14,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:18:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6941 states and 9288 transitions. [2022-01-10 02:18:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:18:14,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:18:14,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:18:14,898 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 02:18:15,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:18:15,097 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:18:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:18:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2141886399, now seen corresponding path program 1 times [2022-01-10 02:18:15,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:18:15,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177773397] [2022-01-10 02:18:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:18:15,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:18:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:18:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:18:15,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:18:15,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177773397] [2022-01-10 02:18:15,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177773397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:18:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920977218] [2022-01-10 02:18:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:18:15,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:18:15,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:18:15,423 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 02:18:15,424 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 02:18:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:18:15,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-10 02:18:15,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:18:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:18:17,717 INFO L328 TraceCheckSpWp]: Computing backward predicates...