/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:31:10,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:31:10,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:31:10,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:31:11,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:31:11,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:31:11,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:31:11,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:31:11,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:31:11,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:31:11,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:31:11,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:31:11,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:31:11,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:31:11,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:31:11,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:31:11,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:31:11,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:31:11,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:31:11,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:31:11,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:31:11,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:31:11,246 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:31:11,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50.c [2022-01-10 00:31:11,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc2c9684/8abcc1289e5f45b39149a52c6cd189c2/FLAG6b21e03f0 [2022-01-10 00:31:11,823 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:31:11,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label50.c [2022-01-10 00:31:11,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc2c9684/8abcc1289e5f45b39149a52c6cd189c2/FLAG6b21e03f0 [2022-01-10 00:31:12,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc2c9684/8abcc1289e5f45b39149a52c6cd189c2 [2022-01-10 00:31:12,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:31:12,332 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:31:12,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:31:12,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:31:12,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:31:12,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:31:12" (1/1) ... [2022-01-10 00:31:12,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efcb5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:12, skipping insertion in model container [2022-01-10 00:31:12,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:31:12" (1/1) ... [2022-01-10 00:31:12,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:31:12,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:31:12,560 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label50.c[6561,6574] [2022-01-10 00:31:12,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:31:13,001 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:31:13,026 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label50.c[6561,6574] [2022-01-10 00:31:13,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:31:13,315 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:31:13,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13 WrapperNode [2022-01-10 00:31:13,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:31:13,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:31:13,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:31:13,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:31:13,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,468 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-01-10 00:31:13,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:31:13,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:31:13,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:31:13,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:31:13,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:31:13,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:31:13,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:31:13,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:31:13,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (1/1) ... [2022-01-10 00:31:13,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:31:13,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:31:13,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:31:13,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 00:31:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:31:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:31:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:31:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:31:13,760 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:31:13,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:31:15,927 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:31:15,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:31:15,939 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:31:15,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:31:15 BoogieIcfgContainer [2022-01-10 00:31:15,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:31:15,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:31:15,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:31:15,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:31:15,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:31:12" (1/3) ... [2022-01-10 00:31:15,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc683ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:31:15, skipping insertion in model container [2022-01-10 00:31:15,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:31:13" (2/3) ... [2022-01-10 00:31:15,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc683ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:31:15, skipping insertion in model container [2022-01-10 00:31:15,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:31:15" (3/3) ... [2022-01-10 00:31:15,946 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label50.c [2022-01-10 00:31:15,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:31:15,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:31:15,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:31:15,982 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 00:31:15,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:31:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 00:31:16,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:16,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:16,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2022-01-10 00:31:16,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:16,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320090010] [2022-01-10 00:31:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:16,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:31:16,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:16,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320090010] [2022-01-10 00:31:16,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320090010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:16,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:16,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:31:16,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939700661] [2022-01-10 00:31:16,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:16,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:16,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:16,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:16,193 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 00:31:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:18,568 INFO L93 Difference]: Finished difference Result 2221 states and 4282 transitions. [2022-01-10 00:31:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:18,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 63 [2022-01-10 00:31:18,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:18,594 INFO L225 Difference]: With dead ends: 2221 [2022-01-10 00:31:18,594 INFO L226 Difference]: Without dead ends: 1384 [2022-01-10 00:31:18,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:18,605 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 732 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:18,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 487 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:31:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-01-10 00:31:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-01-10 00:31:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.5994215473608098) internal successors, (2212), 1383 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2212 transitions. [2022-01-10 00:31:18,701 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2212 transitions. Word has length 63 [2022-01-10 00:31:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:18,701 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2212 transitions. [2022-01-10 00:31:18,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 00:31:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2212 transitions. [2022-01-10 00:31:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 00:31:18,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:18,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:18,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:31:18,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash 928891202, now seen corresponding path program 1 times [2022-01-10 00:31:18,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:18,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763310636] [2022-01-10 00:31:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:18,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:31:18,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:18,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763310636] [2022-01-10 00:31:18,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763310636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:18,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:18,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:31:18,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406026689] [2022-01-10 00:31:18,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:18,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:18,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:18,818 INFO L87 Difference]: Start difference. First operand 1384 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:20,802 INFO L93 Difference]: Finished difference Result 4146 states and 6631 transitions. [2022-01-10 00:31:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:20,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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 128 [2022-01-10 00:31:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:20,811 INFO L225 Difference]: With dead ends: 4146 [2022-01-10 00:31:20,811 INFO L226 Difference]: Without dead ends: 2764 [2022-01-10 00:31:20,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:20,814 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:20,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 529 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:31:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-01-10 00:31:20,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-01-10 00:31:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3503438291711907) internal successors, (3731), 2763 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3731 transitions. [2022-01-10 00:31:20,854 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3731 transitions. Word has length 128 [2022-01-10 00:31:20,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:20,856 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3731 transitions. [2022-01-10 00:31:20,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3731 transitions. [2022-01-10 00:31:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-01-10 00:31:20,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:20,865 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:20,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:31:20,866 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:20,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:20,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1882009590, now seen corresponding path program 1 times [2022-01-10 00:31:20,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:20,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308402797] [2022-01-10 00:31:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:20,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 00:31:21,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:21,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308402797] [2022-01-10 00:31:21,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308402797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:21,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:21,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:21,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346336038] [2022-01-10 00:31:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:21,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:31:21,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:21,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:31:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:31:21,016 INFO L87 Difference]: Start difference. First operand 2764 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:23,995 INFO L93 Difference]: Finished difference Result 7596 states and 9794 transitions. [2022-01-10 00:31:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:31:23,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2022-01-10 00:31:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:24,009 INFO L225 Difference]: With dead ends: 7596 [2022-01-10 00:31:24,010 INFO L226 Difference]: Without dead ends: 4834 [2022-01-10 00:31:24,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:31:24,018 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1872 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:24,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 641 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:31:24,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-01-10 00:31:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4144. [2022-01-10 00:31:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.2698527636978034) internal successors, (5261), 4143 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5261 transitions. [2022-01-10 00:31:24,098 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5261 transitions. Word has length 246 [2022-01-10 00:31:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:24,099 INFO L470 AbstractCegarLoop]: Abstraction has 4144 states and 5261 transitions. [2022-01-10 00:31:24,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5261 transitions. [2022-01-10 00:31:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-01-10 00:31:24,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:24,103 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:24,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:31:24,103 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:24,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash -906042740, now seen corresponding path program 1 times [2022-01-10 00:31:24,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:24,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509328612] [2022-01-10 00:31:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:24,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:31:24,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:24,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509328612] [2022-01-10 00:31:24,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509328612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:24,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:24,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:24,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128713581] [2022-01-10 00:31:24,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:24,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:24,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:24,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:24,270 INFO L87 Difference]: Start difference. First operand 4144 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:26,286 INFO L93 Difference]: Finished difference Result 12426 states and 15778 transitions. [2022-01-10 00:31:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 362 [2022-01-10 00:31:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:26,309 INFO L225 Difference]: With dead ends: 12426 [2022-01-10 00:31:26,309 INFO L226 Difference]: Without dead ends: 8284 [2022-01-10 00:31:26,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:26,324 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 643 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:26,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 824 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:31:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-01-10 00:31:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2022-01-10 00:31:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8284 states, 8283 states have (on average 1.2472534106000241) internal successors, (10331), 8283 states have internal predecessors, (10331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 10331 transitions. [2022-01-10 00:31:26,479 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 10331 transitions. Word has length 362 [2022-01-10 00:31:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:26,481 INFO L470 AbstractCegarLoop]: Abstraction has 8284 states and 10331 transitions. [2022-01-10 00:31:26,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:26,482 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 10331 transitions. [2022-01-10 00:31:26,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-01-10 00:31:26,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:26,485 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:26,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:31:26,486 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:26,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1772964099, now seen corresponding path program 1 times [2022-01-10 00:31:26,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:26,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044952224] [2022-01-10 00:31:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:26,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 00:31:26,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:26,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044952224] [2022-01-10 00:31:26,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044952224] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:31:26,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235328306] [2022-01-10 00:31:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:26,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:31:26,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:31:26,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:31:26,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:31:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:26,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:31:26,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:31:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 00:31:27,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:31:27,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235328306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:27,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:31:27,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-01-10 00:31:27,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597711432] [2022-01-10 00:31:27,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:27,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:27,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:27,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:31:27,367 INFO L87 Difference]: Start difference. First operand 8284 states and 10331 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:29,433 INFO L93 Difference]: Finished difference Result 24156 states and 30160 transitions. [2022-01-10 00:31:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:29,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 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 369 [2022-01-10 00:31:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:29,465 INFO L225 Difference]: With dead ends: 24156 [2022-01-10 00:31:29,465 INFO L226 Difference]: Without dead ends: 15874 [2022-01-10 00:31:29,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:31:29,474 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 391 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:29,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 550 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:31:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2022-01-10 00:31:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 12424. [2022-01-10 00:31:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.231023102310231) internal successors, (15293), 12423 states have internal predecessors, (15293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 15293 transitions. [2022-01-10 00:31:29,658 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 15293 transitions. Word has length 369 [2022-01-10 00:31:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:29,659 INFO L470 AbstractCegarLoop]: Abstraction has 12424 states and 15293 transitions. [2022-01-10 00:31:29,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 15293 transitions. [2022-01-10 00:31:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-01-10 00:31:29,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:29,675 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:29,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:31:29,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:31:29,896 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -717153331, now seen corresponding path program 1 times [2022-01-10 00:31:29,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:29,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519965203] [2022-01-10 00:31:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:29,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:31:30,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:30,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519965203] [2022-01-10 00:31:30,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519965203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:30,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:30,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:30,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028620512] [2022-01-10 00:31:30,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:30,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:30,031 INFO L87 Difference]: Start difference. First operand 12424 states and 15293 transitions. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:31,997 INFO L93 Difference]: Finished difference Result 31056 states and 38078 transitions. [2022-01-10 00:31:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2022-01-10 00:31:32,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:32,027 INFO L225 Difference]: With dead ends: 31056 [2022-01-10 00:31:32,027 INFO L226 Difference]: Without dead ends: 18634 [2022-01-10 00:31:32,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:32,039 INFO L933 BasicCegarLoop]: 1070 mSDtfsCounter, 600 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:32,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 1077 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:31:32,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2022-01-10 00:31:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 17944. [2022-01-10 00:31:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17943 states have (on average 1.1940589644986903) internal successors, (21425), 17943 states have internal predecessors, (21425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 21425 transitions. [2022-01-10 00:31:32,203 INFO L78 Accepts]: Start accepts. Automaton has 17944 states and 21425 transitions. Word has length 455 [2022-01-10 00:31:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:32,204 INFO L470 AbstractCegarLoop]: Abstraction has 17944 states and 21425 transitions. [2022-01-10 00:31:32,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 17944 states and 21425 transitions. [2022-01-10 00:31:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-01-10 00:31:32,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:32,209 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:32,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:31:32,210 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1352129710, now seen corresponding path program 1 times [2022-01-10 00:31:32,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:32,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42880867] [2022-01-10 00:31:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:32,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-01-10 00:31:32,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:32,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42880867] [2022-01-10 00:31:32,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42880867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:32,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:32,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:31:32,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30861505] [2022-01-10 00:31:32,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:32,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:32,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:32,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:32,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:32,320 INFO L87 Difference]: Start difference. First operand 17944 states and 21425 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:34,179 INFO L93 Difference]: Finished difference Result 42786 states and 50792 transitions. [2022-01-10 00:31:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:34,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 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 460 [2022-01-10 00:31:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:34,219 INFO L225 Difference]: With dead ends: 42786 [2022-01-10 00:31:34,219 INFO L226 Difference]: Without dead ends: 24844 [2022-01-10 00:31:34,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:34,238 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 499 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:34,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 109 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:31:34,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2022-01-10 00:31:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 24844. [2022-01-10 00:31:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24844 states, 24843 states have (on average 1.1503039085456668) internal successors, (28577), 24843 states have internal predecessors, (28577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 28577 transitions. [2022-01-10 00:31:34,471 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 28577 transitions. Word has length 460 [2022-01-10 00:31:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:34,472 INFO L470 AbstractCegarLoop]: Abstraction has 24844 states and 28577 transitions. [2022-01-10 00:31:34,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 28577 transitions. [2022-01-10 00:31:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-01-10 00:31:34,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:34,478 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:34,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:31:34,478 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:34,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash 610570492, now seen corresponding path program 1 times [2022-01-10 00:31:34,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:34,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327690378] [2022-01-10 00:31:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:34,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 00:31:34,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:34,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327690378] [2022-01-10 00:31:34,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327690378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:34,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:34,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:34,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117965769] [2022-01-10 00:31:34,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:34,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:34,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:34,630 INFO L87 Difference]: Start difference. First operand 24844 states and 28577 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:36,838 INFO L93 Difference]: Finished difference Result 53826 states and 62398 transitions. [2022-01-10 00:31:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:36,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 462 [2022-01-10 00:31:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:36,876 INFO L225 Difference]: With dead ends: 53826 [2022-01-10 00:31:36,876 INFO L226 Difference]: Without dead ends: 28984 [2022-01-10 00:31:36,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:36,899 INFO L933 BasicCegarLoop]: 1292 mSDtfsCounter, 641 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:36,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 1299 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:31:36,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28984 states. [2022-01-10 00:31:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28984 to 27604. [2022-01-10 00:31:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27604 states, 27603 states have (on average 1.143317755316451) internal successors, (31559), 27603 states have internal predecessors, (31559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27604 states to 27604 states and 31559 transitions. [2022-01-10 00:31:37,208 INFO L78 Accepts]: Start accepts. Automaton has 27604 states and 31559 transitions. Word has length 462 [2022-01-10 00:31:37,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:37,209 INFO L470 AbstractCegarLoop]: Abstraction has 27604 states and 31559 transitions. [2022-01-10 00:31:37,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 27604 states and 31559 transitions. [2022-01-10 00:31:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2022-01-10 00:31:37,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:37,219 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:37,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:31:37,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash 842142857, now seen corresponding path program 1 times [2022-01-10 00:31:37,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:37,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981131924] [2022-01-10 00:31:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:37,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-01-10 00:31:37,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:37,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981131924] [2022-01-10 00:31:37,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981131924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:37,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:37,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:37,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52513664] [2022-01-10 00:31:37,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:37,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:37,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:37,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:37,344 INFO L87 Difference]: Start difference. First operand 27604 states and 31559 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:39,476 INFO L93 Difference]: Finished difference Result 64176 states and 74122 transitions. [2022-01-10 00:31:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 552 [2022-01-10 00:31:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:39,510 INFO L225 Difference]: With dead ends: 64176 [2022-01-10 00:31:39,510 INFO L226 Difference]: Without dead ends: 33124 [2022-01-10 00:31:39,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:39,526 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 631 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:39,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 1318 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:31:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33124 states. [2022-01-10 00:31:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33124 to 32434. [2022-01-10 00:31:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32434 states, 32433 states have (on average 1.1341534856473345) internal successors, (36784), 32433 states have internal predecessors, (36784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32434 states to 32434 states and 36784 transitions. [2022-01-10 00:31:39,822 INFO L78 Accepts]: Start accepts. Automaton has 32434 states and 36784 transitions. Word has length 552 [2022-01-10 00:31:39,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:39,823 INFO L470 AbstractCegarLoop]: Abstraction has 32434 states and 36784 transitions. [2022-01-10 00:31:39,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:39,823 INFO L276 IsEmpty]: Start isEmpty. Operand 32434 states and 36784 transitions. [2022-01-10 00:31:39,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-01-10 00:31:39,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:39,830 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:39,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:31:39,830 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:39,831 INFO L85 PathProgramCache]: Analyzing trace with hash -985952299, now seen corresponding path program 1 times [2022-01-10 00:31:39,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:39,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911876401] [2022-01-10 00:31:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:39,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-01-10 00:31:40,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:40,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911876401] [2022-01-10 00:31:40,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911876401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:40,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:40,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:40,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890901594] [2022-01-10 00:31:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:40,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:31:40,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:31:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:31:40,055 INFO L87 Difference]: Start difference. First operand 32434 states and 36784 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:42,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:42,244 INFO L93 Difference]: Finished difference Result 66299 states and 75023 transitions. [2022-01-10 00:31:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:31:42,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 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 573 [2022-01-10 00:31:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:42,274 INFO L225 Difference]: With dead ends: 66299 [2022-01-10 00:31:42,274 INFO L226 Difference]: Without dead ends: 34504 [2022-01-10 00:31:42,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:31:42,285 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 515 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:42,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 629 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:31:42,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34504 states. [2022-01-10 00:31:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34504 to 34504. [2022-01-10 00:31:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34504 states, 34503 states have (on average 1.0967162275744138) internal successors, (37840), 34503 states have internal predecessors, (37840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34504 states to 34504 states and 37840 transitions. [2022-01-10 00:31:42,559 INFO L78 Accepts]: Start accepts. Automaton has 34504 states and 37840 transitions. Word has length 573 [2022-01-10 00:31:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:42,559 INFO L470 AbstractCegarLoop]: Abstraction has 34504 states and 37840 transitions. [2022-01-10 00:31:42,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 34504 states and 37840 transitions. [2022-01-10 00:31:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-01-10 00:31:42,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:42,567 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:42,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:31:42,567 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:42,567 INFO L85 PathProgramCache]: Analyzing trace with hash 558221884, now seen corresponding path program 1 times [2022-01-10 00:31:42,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:42,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082389579] [2022-01-10 00:31:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:42,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-10 00:31:42,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:42,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082389579] [2022-01-10 00:31:42,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082389579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:42,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:42,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:42,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534276516] [2022-01-10 00:31:42,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:42,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:31:42,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:31:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:31:42,796 INFO L87 Difference]: Start difference. First operand 34504 states and 37840 transitions. Second operand has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:45,418 INFO L93 Difference]: Finished difference Result 69006 states and 75703 transitions. [2022-01-10 00:31:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:31:45,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 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 628 [2022-01-10 00:31:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:45,449 INFO L225 Difference]: With dead ends: 69006 [2022-01-10 00:31:45,449 INFO L226 Difference]: Without dead ends: 35194 [2022-01-10 00:31:45,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:31:45,465 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 1022 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3096 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 3781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 3096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:45,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 97 Invalid, 3781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 3096 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:31:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35194 states. [2022-01-10 00:31:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35194 to 35194. [2022-01-10 00:31:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35194 states, 35193 states have (on average 1.07848151621061) internal successors, (37955), 35193 states have internal predecessors, (37955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35194 states to 35194 states and 37955 transitions. [2022-01-10 00:31:45,806 INFO L78 Accepts]: Start accepts. Automaton has 35194 states and 37955 transitions. Word has length 628 [2022-01-10 00:31:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:45,806 INFO L470 AbstractCegarLoop]: Abstraction has 35194 states and 37955 transitions. [2022-01-10 00:31:45,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.0) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 35194 states and 37955 transitions. [2022-01-10 00:31:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1149 [2022-01-10 00:31:45,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:45,832 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:45,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:31:45,833 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1917091075, now seen corresponding path program 1 times [2022-01-10 00:31:45,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:45,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144767449] [2022-01-10 00:31:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:45,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2022-01-10 00:31:46,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:46,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144767449] [2022-01-10 00:31:46,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144767449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:46,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:46,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:46,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004858847] [2022-01-10 00:31:46,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:46,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:46,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:46,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:46,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:46,157 INFO L87 Difference]: Start difference. First operand 35194 states and 37955 transitions. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:47,977 INFO L93 Difference]: Finished difference Result 77286 states and 83940 transitions. [2022-01-10 00:31:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:47,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 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 1148 [2022-01-10 00:31:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:48,030 INFO L225 Difference]: With dead ends: 77286 [2022-01-10 00:31:48,030 INFO L226 Difference]: Without dead ends: 42784 [2022-01-10 00:31:48,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:48,052 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 698 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:48,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 96 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:31:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42784 states. [2022-01-10 00:31:48,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42784 to 39334. [2022-01-10 00:31:48,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.0903058500495766) internal successors, (42885), 39333 states have internal predecessors, (42885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:48,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 42885 transitions. [2022-01-10 00:31:48,425 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 42885 transitions. Word has length 1148 [2022-01-10 00:31:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:48,426 INFO L470 AbstractCegarLoop]: Abstraction has 39334 states and 42885 transitions. [2022-01-10 00:31:48,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 42885 transitions. [2022-01-10 00:31:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2022-01-10 00:31:48,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:48,440 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:48,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:31:48,441 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1545847230, now seen corresponding path program 1 times [2022-01-10 00:31:48,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:48,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747187861] [2022-01-10 00:31:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:48,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2022-01-10 00:31:49,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:49,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747187861] [2022-01-10 00:31:49,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747187861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:49,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:49,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:49,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554983504] [2022-01-10 00:31:49,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:49,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:49,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:49,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:49,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:49,088 INFO L87 Difference]: Start difference. First operand 39334 states and 42885 transitions. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:50,761 INFO L93 Difference]: Finished difference Result 77976 states and 85077 transitions. [2022-01-10 00:31:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:50,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 1211 [2022-01-10 00:31:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:50,798 INFO L225 Difference]: With dead ends: 77976 [2022-01-10 00:31:50,798 INFO L226 Difference]: Without dead ends: 39334 [2022-01-10 00:31:50,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:50,821 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 734 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:50,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 780 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:31:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39334 states. [2022-01-10 00:31:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39334 to 39334. [2022-01-10 00:31:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39334 states, 39333 states have (on average 1.0779498131340095) internal successors, (42399), 39333 states have internal predecessors, (42399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39334 states to 39334 states and 42399 transitions. [2022-01-10 00:31:51,264 INFO L78 Accepts]: Start accepts. Automaton has 39334 states and 42399 transitions. Word has length 1211 [2022-01-10 00:31:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:51,264 INFO L470 AbstractCegarLoop]: Abstraction has 39334 states and 42399 transitions. [2022-01-10 00:31:51,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:51,265 INFO L276 IsEmpty]: Start isEmpty. Operand 39334 states and 42399 transitions. [2022-01-10 00:31:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1511 [2022-01-10 00:31:51,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:51,297 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:51,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:31:51,297 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash 286545695, now seen corresponding path program 1 times [2022-01-10 00:31:51,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:51,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958605862] [2022-01-10 00:31:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:51,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 703 proven. 1236 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 00:31:51,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:51,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958605862] [2022-01-10 00:31:51,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958605862] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:31:51,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036217235] [2022-01-10 00:31:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:51,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:31:51,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:31:51,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:31:51,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:31:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:52,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:31:52,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:31:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 1235 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2022-01-10 00:31:54,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:31:54,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036217235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:54,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:31:54,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 00:31:54,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302131063] [2022-01-10 00:31:54,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:54,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:54,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:54,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:31:54,087 INFO L87 Difference]: Start difference. First operand 39334 states and 42399 transitions. Second operand has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:55,909 INFO L93 Difference]: Finished difference Result 91086 states and 99006 transitions. [2022-01-10 00:31:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:55,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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 1510 [2022-01-10 00:31:55,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:55,972 INFO L225 Difference]: With dead ends: 91086 [2022-01-10 00:31:55,972 INFO L226 Difference]: Without dead ends: 52444 [2022-01-10 00:31:56,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1516 GetRequests, 1510 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:31:56,001 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 343 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:56,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 222 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:31:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52444 states. [2022-01-10 00:31:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52444 to 51754. [2022-01-10 00:31:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51754 states, 51753 states have (on average 1.0748748864800108) internal successors, (55628), 51753 states have internal predecessors, (55628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51754 states to 51754 states and 55628 transitions. [2022-01-10 00:31:56,702 INFO L78 Accepts]: Start accepts. Automaton has 51754 states and 55628 transitions. Word has length 1510 [2022-01-10 00:31:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:56,702 INFO L470 AbstractCegarLoop]: Abstraction has 51754 states and 55628 transitions. [2022-01-10 00:31:56,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 51754 states and 55628 transitions. [2022-01-10 00:31:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1529 [2022-01-10 00:31:56,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:31:56,741 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:31:56,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:31:56,948 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,SelfDestructingSolverStorable13 [2022-01-10 00:31:56,949 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:31:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:31:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash 42303698, now seen corresponding path program 1 times [2022-01-10 00:31:56,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:31:56,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990241611] [2022-01-10 00:31:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:31:56,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:31:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:31:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 1573 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-01-10 00:31:57,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:31:57,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990241611] [2022-01-10 00:31:57,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990241611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:31:57,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:31:57,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:31:57,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433234832] [2022-01-10 00:31:57,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:31:57,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:31:57,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:31:57,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:31:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:57,281 INFO L87 Difference]: Start difference. First operand 51754 states and 55628 transitions. Second operand has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:31:59,230 INFO L93 Difference]: Finished difference Result 125586 states and 135636 transitions. [2022-01-10 00:31:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:31:59,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 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 1528 [2022-01-10 00:31:59,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:31:59,294 INFO L225 Difference]: With dead ends: 125586 [2022-01-10 00:31:59,295 INFO L226 Difference]: Without dead ends: 74524 [2022-01-10 00:31:59,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:31:59,322 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 667 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:31:59,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 312 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 1902 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:31:59,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74524 states. [2022-01-10 00:31:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74524 to 73834. [2022-01-10 00:31:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73834 states, 73833 states have (on average 1.0705375645036772) internal successors, (79041), 73833 states have internal predecessors, (79041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73834 states to 73834 states and 79041 transitions. [2022-01-10 00:31:59,988 INFO L78 Accepts]: Start accepts. Automaton has 73834 states and 79041 transitions. Word has length 1528 [2022-01-10 00:31:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:31:59,989 INFO L470 AbstractCegarLoop]: Abstraction has 73834 states and 79041 transitions. [2022-01-10 00:31:59,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:31:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 73834 states and 79041 transitions. [2022-01-10 00:32:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1633 [2022-01-10 00:32:00,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:32:00,033 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:32:00,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:32:00,033 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:32:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:32:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash 122804646, now seen corresponding path program 1 times [2022-01-10 00:32:00,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:32:00,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559152941] [2022-01-10 00:32:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:32:00,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:32:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:32:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 1632 proven. 0 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2022-01-10 00:32:00,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:32:00,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559152941] [2022-01-10 00:32:00,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559152941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:32:00,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:32:00,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:32:00,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312512971] [2022-01-10 00:32:00,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:32:00,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:32:00,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:32:00,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:32:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:32:00,626 INFO L87 Difference]: Start difference. First operand 73834 states and 79041 transitions. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:32:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:32:02,451 INFO L93 Difference]: Finished difference Result 153876 states and 164449 transitions. [2022-01-10 00:32:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:32:02,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 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 1632 [2022-01-10 00:32:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:32:02,534 INFO L225 Difference]: With dead ends: 153876 [2022-01-10 00:32:02,534 INFO L226 Difference]: Without dead ends: 73834 [2022-01-10 00:32:02,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:32:02,571 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 651 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:32:02,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1059 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:32:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73834 states. [2022-01-10 00:32:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73834 to 71764. [2022-01-10 00:32:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71764 states, 71763 states have (on average 1.0359238047461783) internal successors, (74341), 71763 states have internal predecessors, (74341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:32:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71764 states to 71764 states and 74341 transitions. [2022-01-10 00:32:03,378 INFO L78 Accepts]: Start accepts. Automaton has 71764 states and 74341 transitions. Word has length 1632 [2022-01-10 00:32:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:32:03,378 INFO L470 AbstractCegarLoop]: Abstraction has 71764 states and 74341 transitions. [2022-01-10 00:32:03,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:32:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 71764 states and 74341 transitions. [2022-01-10 00:32:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1668 [2022-01-10 00:32:03,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:32:03,422 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:32:03,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:32:03,422 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:32:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:32:03,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1467632712, now seen corresponding path program 1 times [2022-01-10 00:32:03,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:32:03,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029447885] [2022-01-10 00:32:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:32:03,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:32:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:32:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 1974 proven. 319 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2022-01-10 00:32:04,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:32:04,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029447885] [2022-01-10 00:32:04,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029447885] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:32:04,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464934588] [2022-01-10 00:32:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:32:04,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:32:04,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:32:04,107 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:32:04,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:32:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:32:04,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:32:04,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:32:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 1994 proven. 0 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-01-10 00:32:06,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:32:06,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464934588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:32:06,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:32:06,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-01-10 00:32:06,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505035816] [2022-01-10 00:32:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:32:06,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:32:06,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:32:06,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:32:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:32:06,172 INFO L87 Difference]: Start difference. First operand 71764 states and 74341 transitions. Second operand has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:32:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:32:07,933 INFO L93 Difference]: Finished difference Result 156636 states and 162591 transitions. [2022-01-10 00:32:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:32:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 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 1667 [2022-01-10 00:32:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:32:08,015 INFO L225 Difference]: With dead ends: 156636 [2022-01-10 00:32:08,015 INFO L226 Difference]: Without dead ends: 85564 [2022-01-10 00:32:08,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1676 GetRequests, 1669 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:32:08,027 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 609 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:32:08,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 964 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:32:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85564 states. [2022-01-10 00:32:08,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85564 to 85564. [2022-01-10 00:32:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85564 states, 85563 states have (on average 1.0337412199198253) internal successors, (88450), 85563 states have internal predecessors, (88450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:32:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85564 states to 85564 states and 88450 transitions. [2022-01-10 00:32:08,766 INFO L78 Accepts]: Start accepts. Automaton has 85564 states and 88450 transitions. Word has length 1667 [2022-01-10 00:32:08,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:32:08,767 INFO L470 AbstractCegarLoop]: Abstraction has 85564 states and 88450 transitions. [2022-01-10 00:32:08,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:32:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 85564 states and 88450 transitions. [2022-01-10 00:32:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2022-01-10 00:32:08,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:32:08,915 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:32:08,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 00:32:09,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:32:09,119 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:32:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:32:09,119 INFO L85 PathProgramCache]: Analyzing trace with hash -957661622, now seen corresponding path program 1 times [2022-01-10 00:32:09,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:32:09,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534247199] [2022-01-10 00:32:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:32:09,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:32:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:32:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 2273 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-01-10 00:32:09,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:32:09,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534247199] [2022-01-10 00:32:09,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534247199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:32:09,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:32:09,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:32:09,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249166359] [2022-01-10 00:32:09,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:32:09,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:32:09,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:32:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:32:09,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:32:09,633 INFO L87 Difference]: Start difference. First operand 85564 states and 88450 transitions. Second operand has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 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)