/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/Problem13_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:10:10,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:10:10,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:10:10,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:10:10,217 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 00:10:10,243 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:10:10,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:10:10,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:10:10,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:10:10,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:10:10,245 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:10:10,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:10:10,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:10:10,246 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:10:10,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:10:10,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:10:10,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:10:10,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:10:10,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:10:10,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:10:10,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:10:10,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:10:10,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:10:10,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:10:10,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:10:10,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:10:10,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:10:10,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:10:10,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:10:10,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:10:10,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:10:10,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:10:10,250 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:10:10,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:10:10,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:10:10,250 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:10:10,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:10:10,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:10:10,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:10:10,426 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:10:10,426 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:10:10,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31.c [2022-01-10 00:10:10,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0620bab/edde5524d4b24e6c80d8eb0f81bbf004/FLAGf511c3441 [2022-01-10 00:10:11,058 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:10:11,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label31.c [2022-01-10 00:10:11,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0620bab/edde5524d4b24e6c80d8eb0f81bbf004/FLAGf511c3441 [2022-01-10 00:10:11,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0620bab/edde5524d4b24e6c80d8eb0f81bbf004 [2022-01-10 00:10:11,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:10:11,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:10:11,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:10:11,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:10:11,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:10:11,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:11" (1/1) ... [2022-01-10 00:10:11,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d75a15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:11, skipping insertion in model container [2022-01-10 00:10:11,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:11" (1/1) ... [2022-01-10 00:10:11,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:10:11,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:10:11,561 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/Problem13_label31.c[5792,5805] [2022-01-10 00:10:12,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:10:12,144 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:10:12,164 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/Problem13_label31.c[5792,5805] [2022-01-10 00:10:12,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:10:12,509 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:10:12,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12 WrapperNode [2022-01-10 00:10:12,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:10:12,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:10:12,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:10:12,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:10:12,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:12,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,006 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-01-10 00:10:13,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:10:13,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:10:13,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:10:13,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:10:13,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:10:13,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:10:13,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:10:13,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:10:13,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (1/1) ... [2022-01-10 00:10:13,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:10:13,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:10:13,572 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 00:10:13,584 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 00:10:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:10:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:10:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:10:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:10:13,679 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:10:13,680 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:10:17,099 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:10:17,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:10:17,111 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:10:17,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:17 BoogieIcfgContainer [2022-01-10 00:10:17,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:10:17,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:10:17,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:10:17,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:10:17,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:10:11" (1/3) ... [2022-01-10 00:10:17,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eeae38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:10:17, skipping insertion in model container [2022-01-10 00:10:17,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:12" (2/3) ... [2022-01-10 00:10:17,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eeae38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:10:17, skipping insertion in model container [2022-01-10 00:10:17,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:17" (3/3) ... [2022-01-10 00:10:17,118 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label31.c [2022-01-10 00:10:17,121 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:10:17,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:10:17,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:10:17,171 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 00:10:17,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:10:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 00:10:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 00:10:17,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:17,212 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] [2022-01-10 00:10:17,213 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:17,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:17,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2102454322, now seen corresponding path program 1 times [2022-01-10 00:10:17,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:17,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624696908] [2022-01-10 00:10:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:17,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:17,376 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 00:10:17,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:17,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624696908] [2022-01-10 00:10:17,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624696908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:17,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:17,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:17,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833155687] [2022-01-10 00:10:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:17,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:17,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:17,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:17,411 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 00:10:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:20,956 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2022-01-10 00:10:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:20,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 00:10:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:20,980 INFO L225 Difference]: With dead ends: 3035 [2022-01-10 00:10:20,980 INFO L226 Difference]: Without dead ends: 1873 [2022-01-10 00:10:20,988 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 00:10:20,991 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 865 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:20,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-01-10 00:10:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-01-10 00:10:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2022-01-10 00:10:21,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 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 00:10:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2022-01-10 00:10:21,079 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 40 [2022-01-10 00:10:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:21,080 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2022-01-10 00:10:21,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 00:10:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2022-01-10 00:10:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 00:10:21,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:21,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:21,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:10:21,083 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash -329948995, now seen corresponding path program 1 times [2022-01-10 00:10:21,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040401860] [2022-01-10 00:10:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:21,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:21,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:21,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040401860] [2022-01-10 00:10:21,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040401860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:21,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:21,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:21,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738757238] [2022-01-10 00:10:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:21,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:21,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:21,231 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 00:10:24,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:24,342 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2022-01-10 00:10:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:24,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-10 00:10:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:24,352 INFO L225 Difference]: With dead ends: 5317 [2022-01-10 00:10:24,352 INFO L226 Difference]: Without dead ends: 3460 [2022-01-10 00:10:24,354 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 00:10:24,355 INFO L933 BasicCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:24,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 00:10:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-01-10 00:10:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2022-01-10 00:10:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 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 00:10:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2022-01-10 00:10:24,409 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 112 [2022-01-10 00:10:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:24,411 INFO L470 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2022-01-10 00:10:24,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 00:10:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2022-01-10 00:10:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 00:10:24,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:24,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:24,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:10:24,419 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash -933684044, now seen corresponding path program 1 times [2022-01-10 00:10:24,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:24,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006765445] [2022-01-10 00:10:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:24,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:24,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:24,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006765445] [2022-01-10 00:10:24,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006765445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:24,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:24,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:24,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337810795] [2022-01-10 00:10:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:24,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:10:24,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:10:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:10:24,591 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 00:10:28,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:28,964 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2022-01-10 00:10:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:10:28,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 00:10:28,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:28,989 INFO L225 Difference]: With dead ends: 10870 [2022-01-10 00:10:28,989 INFO L226 Difference]: Without dead ends: 7413 [2022-01-10 00:10:28,996 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 00:10:28,997 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 2581 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:28,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-10 00:10:29,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-01-10 00:10:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2022-01-10 00:10:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2701389825934422) internal successors, (9413), 7411 states have internal predecessors, (9413), 0 states have call successors, (0), 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 00:10:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9413 transitions. [2022-01-10 00:10:29,138 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9413 transitions. Word has length 126 [2022-01-10 00:10:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:29,140 INFO L470 AbstractCegarLoop]: Abstraction has 7412 states and 9413 transitions. [2022-01-10 00:10:29,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 00:10:29,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9413 transitions. [2022-01-10 00:10:29,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 00:10:29,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:29,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:29,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:10:29,145 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:29,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash -435026765, now seen corresponding path program 1 times [2022-01-10 00:10:29,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371589043] [2022-01-10 00:10:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:29,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:29,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:29,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371589043] [2022-01-10 00:10:29,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371589043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:29,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:29,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:29,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235720210] [2022-01-10 00:10:29,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:29,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:29,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:29,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:29,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:29,268 INFO L87 Difference]: Start difference. First operand 7412 states and 9413 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 00:10:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:32,211 INFO L93 Difference]: Finished difference Result 17195 states and 22713 transitions. [2022-01-10 00:10:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:32,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-01-10 00:10:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:32,239 INFO L225 Difference]: With dead ends: 17195 [2022-01-10 00:10:32,239 INFO L226 Difference]: Without dead ends: 10572 [2022-01-10 00:10:32,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:32,251 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 928 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:32,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 904 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:10:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10572 states. [2022-01-10 00:10:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10572 to 10564. [2022-01-10 00:10:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10564 states, 10563 states have (on average 1.253905140585061) internal successors, (13245), 10563 states have internal predecessors, (13245), 0 states have call successors, (0), 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 00:10:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10564 states to 10564 states and 13245 transitions. [2022-01-10 00:10:32,378 INFO L78 Accepts]: Start accepts. Automaton has 10564 states and 13245 transitions. Word has length 136 [2022-01-10 00:10:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:32,380 INFO L470 AbstractCegarLoop]: Abstraction has 10564 states and 13245 transitions. [2022-01-10 00:10:32,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 00:10:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 10564 states and 13245 transitions. [2022-01-10 00:10:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-01-10 00:10:32,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:32,382 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:10:32,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:10:32,382 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:32,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1382232573, now seen corresponding path program 1 times [2022-01-10 00:10:32,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:32,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559463891] [2022-01-10 00:10:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:32,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-01-10 00:10:32,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:32,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559463891] [2022-01-10 00:10:32,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559463891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:32,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:32,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:32,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197709592] [2022-01-10 00:10:32,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:32,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:32,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:32,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:32,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:32,510 INFO L87 Difference]: Start difference. First operand 10564 states and 13245 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 00:10:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:35,358 INFO L93 Difference]: Finished difference Result 23508 states and 30389 transitions. [2022-01-10 00:10:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:35,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 225 [2022-01-10 00:10:35,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:35,390 INFO L225 Difference]: With dead ends: 23508 [2022-01-10 00:10:35,390 INFO L226 Difference]: Without dead ends: 13733 [2022-01-10 00:10:35,401 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 00:10:35,402 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 984 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:35,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 862 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:10:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2022-01-10 00:10:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 13723. [2022-01-10 00:10:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13723 states, 13722 states have (on average 1.2664334645095467) internal successors, (17378), 13722 states have internal predecessors, (17378), 0 states have call successors, (0), 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 00:10:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13723 states to 13723 states and 17378 transitions. [2022-01-10 00:10:35,557 INFO L78 Accepts]: Start accepts. Automaton has 13723 states and 17378 transitions. Word has length 225 [2022-01-10 00:10:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:35,557 INFO L470 AbstractCegarLoop]: Abstraction has 13723 states and 17378 transitions. [2022-01-10 00:10:35,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 00:10:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13723 states and 17378 transitions. [2022-01-10 00:10:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-01-10 00:10:35,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:35,561 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:10:35,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:10:35,561 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:35,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1674288238, now seen corresponding path program 1 times [2022-01-10 00:10:35,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:35,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917257336] [2022-01-10 00:10:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:35,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-10 00:10:35,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:35,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917257336] [2022-01-10 00:10:35,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917257336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:35,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:35,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:35,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063123381] [2022-01-10 00:10:35,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:35,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:35,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:35,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:35,669 INFO L87 Difference]: Start difference. First operand 13723 states and 17378 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 00:10:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:38,652 INFO L93 Difference]: Finished difference Result 29809 states and 38633 transitions. [2022-01-10 00:10:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:38,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 256 [2022-01-10 00:10:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:38,678 INFO L225 Difference]: With dead ends: 29809 [2022-01-10 00:10:38,678 INFO L226 Difference]: Without dead ends: 16875 [2022-01-10 00:10:38,686 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 00:10:38,687 INFO L933 BasicCegarLoop]: 1718 mSDtfsCounter, 847 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:38,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1869 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:10:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16875 states. [2022-01-10 00:10:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16875 to 16871. [2022-01-10 00:10:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16871 states, 16870 states have (on average 1.2406046235921755) internal successors, (20929), 16870 states have internal predecessors, (20929), 0 states have call successors, (0), 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 00:10:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16871 states to 16871 states and 20929 transitions. [2022-01-10 00:10:38,845 INFO L78 Accepts]: Start accepts. Automaton has 16871 states and 20929 transitions. Word has length 256 [2022-01-10 00:10:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:38,845 INFO L470 AbstractCegarLoop]: Abstraction has 16871 states and 20929 transitions. [2022-01-10 00:10:38,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 00:10:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 16871 states and 20929 transitions. [2022-01-10 00:10:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-10 00:10:38,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:38,850 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:38,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:10:38,850 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2075264397, now seen corresponding path program 1 times [2022-01-10 00:10:38,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:38,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228207792] [2022-01-10 00:10:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:38,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-10 00:10:38,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:38,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228207792] [2022-01-10 00:10:38,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228207792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:38,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:38,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:38,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269636116] [2022-01-10 00:10:38,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:38,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:38,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:38,957 INFO L87 Difference]: Start difference. First operand 16871 states and 20929 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 00:10:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:41,446 INFO L93 Difference]: Finished difference Result 32939 states and 41051 transitions. [2022-01-10 00:10:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 334 [2022-01-10 00:10:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:41,472 INFO L225 Difference]: With dead ends: 32939 [2022-01-10 00:10:41,472 INFO L226 Difference]: Without dead ends: 16857 [2022-01-10 00:10:41,485 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 00:10:41,486 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 1029 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:41,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 1655 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:10:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2022-01-10 00:10:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 16856. [2022-01-10 00:10:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16856 states, 16855 states have (on average 1.1646395728270542) internal successors, (19630), 16855 states have internal predecessors, (19630), 0 states have call successors, (0), 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 00:10:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16856 states to 16856 states and 19630 transitions. [2022-01-10 00:10:41,647 INFO L78 Accepts]: Start accepts. Automaton has 16856 states and 19630 transitions. Word has length 334 [2022-01-10 00:10:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:41,648 INFO L470 AbstractCegarLoop]: Abstraction has 16856 states and 19630 transitions. [2022-01-10 00:10:41,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 00:10:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 16856 states and 19630 transitions. [2022-01-10 00:10:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-01-10 00:10:41,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:41,653 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:10:41,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:10:41,654 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:41,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 540762963, now seen corresponding path program 1 times [2022-01-10 00:10:41,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:41,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388144487] [2022-01-10 00:10:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:41,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-10 00:10:41,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:41,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388144487] [2022-01-10 00:10:41,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388144487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:41,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:41,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:41,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997442878] [2022-01-10 00:10:41,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:41,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:41,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:41,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:41,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:41,757 INFO L87 Difference]: Start difference. First operand 16856 states and 19630 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 00:10:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:44,811 INFO L93 Difference]: Finished difference Result 48682 states and 56919 transitions. [2022-01-10 00:10:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:44,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 338 [2022-01-10 00:10:44,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:44,848 INFO L225 Difference]: With dead ends: 48682 [2022-01-10 00:10:44,848 INFO L226 Difference]: Without dead ends: 32615 [2022-01-10 00:10:44,863 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 00:10:44,864 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 769 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:44,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 973 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:10:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32615 states. [2022-01-10 00:10:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32615 to 29455. [2022-01-10 00:10:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29455 states, 29454 states have (on average 1.1309160046173694) internal successors, (33310), 29454 states have internal predecessors, (33310), 0 states have call successors, (0), 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 00:10:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29455 states to 29455 states and 33310 transitions. [2022-01-10 00:10:45,161 INFO L78 Accepts]: Start accepts. Automaton has 29455 states and 33310 transitions. Word has length 338 [2022-01-10 00:10:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:45,161 INFO L470 AbstractCegarLoop]: Abstraction has 29455 states and 33310 transitions. [2022-01-10 00:10:45,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 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 00:10:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 29455 states and 33310 transitions. [2022-01-10 00:10:45,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-01-10 00:10:45,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:45,165 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:45,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:10:45,166 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash -433487939, now seen corresponding path program 1 times [2022-01-10 00:10:45,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:45,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294228362] [2022-01-10 00:10:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:45,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-01-10 00:10:45,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:45,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294228362] [2022-01-10 00:10:45,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294228362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:45,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:45,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:45,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938894340] [2022-01-10 00:10:45,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:45,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:45,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:45,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:45,280 INFO L87 Difference]: Start difference. First operand 29455 states and 33310 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 00:10:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:47,946 INFO L93 Difference]: Finished difference Result 58119 states and 65825 transitions. [2022-01-10 00:10:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:47,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 356 [2022-01-10 00:10:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:47,977 INFO L225 Difference]: With dead ends: 58119 [2022-01-10 00:10:47,977 INFO L226 Difference]: Without dead ends: 29453 [2022-01-10 00:10:47,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 00:10:47,986 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 1160 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:47,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 1420 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:10:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29453 states. [2022-01-10 00:10:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29453 to 29452. [2022-01-10 00:10:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29452 states, 29451 states have (on average 1.1039353502427762) internal successors, (32512), 29451 states have internal predecessors, (32512), 0 states have call successors, (0), 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 00:10:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29452 states to 29452 states and 32512 transitions. [2022-01-10 00:10:48,258 INFO L78 Accepts]: Start accepts. Automaton has 29452 states and 32512 transitions. Word has length 356 [2022-01-10 00:10:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:48,258 INFO L470 AbstractCegarLoop]: Abstraction has 29452 states and 32512 transitions. [2022-01-10 00:10:48,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 00:10:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 29452 states and 32512 transitions. [2022-01-10 00:10:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-01-10 00:10:48,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:48,267 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 00:10:48,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:10:48,267 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:48,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:48,267 INFO L85 PathProgramCache]: Analyzing trace with hash -214256868, now seen corresponding path program 1 times [2022-01-10 00:10:48,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:48,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646836565] [2022-01-10 00:10:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:48,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-01-10 00:10:48,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:48,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646836565] [2022-01-10 00:10:48,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646836565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:48,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:48,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:48,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648404649] [2022-01-10 00:10:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:48,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:48,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:48,374 INFO L87 Difference]: Start difference. First operand 29452 states and 32512 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 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 00:10:51,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:51,240 INFO L93 Difference]: Finished difference Result 66789 states and 73600 transitions. [2022-01-10 00:10:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 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 451 [2022-01-10 00:10:51,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:51,281 INFO L225 Difference]: With dead ends: 66789 [2022-01-10 00:10:51,281 INFO L226 Difference]: Without dead ends: 38126 [2022-01-10 00:10:51,302 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 00:10:51,303 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 719 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:51,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 1187 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 00:10:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38126 states. [2022-01-10 00:10:51,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38126 to 38116. [2022-01-10 00:10:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38116 states, 38115 states have (on average 1.0886265249901614) internal successors, (41493), 38115 states have internal predecessors, (41493), 0 states have call successors, (0), 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 00:10:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38116 states to 38116 states and 41493 transitions. [2022-01-10 00:10:51,817 INFO L78 Accepts]: Start accepts. Automaton has 38116 states and 41493 transitions. Word has length 451 [2022-01-10 00:10:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:51,818 INFO L470 AbstractCegarLoop]: Abstraction has 38116 states and 41493 transitions. [2022-01-10 00:10:51,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 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 00:10:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 38116 states and 41493 transitions. [2022-01-10 00:10:51,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-01-10 00:10:51,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:51,828 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:51,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:10:51,828 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash 910964850, now seen corresponding path program 1 times [2022-01-10 00:10:51,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:51,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539588212] [2022-01-10 00:10:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:51,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 313 proven. 113 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 00:10:52,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:52,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539588212] [2022-01-10 00:10:52,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539588212] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:10:52,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481457883] [2022-01-10 00:10:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:52,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:10:52,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:10:52,072 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 00:10:52,073 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 00:10:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:52,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:10:52,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:10:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-01-10 00:10:52,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:10:52,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481457883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:52,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:10:52,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-01-10 00:10:52,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641312211] [2022-01-10 00:10:52,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:52,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:52,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:10:52,926 INFO L87 Difference]: Start difference. First operand 38116 states and 41493 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 00:10:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:55,722 INFO L93 Difference]: Finished difference Result 74644 states and 82181 transitions. [2022-01-10 00:10:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:55,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 480 [2022-01-10 00:10:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:55,782 INFO L225 Difference]: With dead ends: 74644 [2022-01-10 00:10:55,782 INFO L226 Difference]: Without dead ends: 45981 [2022-01-10 00:10:55,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:10:55,809 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1123 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:55,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 407 Invalid, 3119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:10:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45981 states. [2022-01-10 00:10:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45981 to 45981. [2022-01-10 00:10:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45981 states, 45980 states have (on average 1.0871683340582863) internal successors, (49988), 45980 states have internal predecessors, (49988), 0 states have call successors, (0), 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 00:10:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45981 states to 45981 states and 49988 transitions. [2022-01-10 00:10:56,379 INFO L78 Accepts]: Start accepts. Automaton has 45981 states and 49988 transitions. Word has length 480 [2022-01-10 00:10:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:56,380 INFO L470 AbstractCegarLoop]: Abstraction has 45981 states and 49988 transitions. [2022-01-10 00:10:56,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 00:10:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 45981 states and 49988 transitions. [2022-01-10 00:10:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-01-10 00:10:56,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:56,391 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:56,413 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 00:10:56,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 00:10:56,610 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1889758981, now seen corresponding path program 1 times [2022-01-10 00:10:56,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:56,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189598140] [2022-01-10 00:10:56,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:56,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-01-10 00:10:56,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:56,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189598140] [2022-01-10 00:10:56,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189598140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:56,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:56,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:10:56,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611070435] [2022-01-10 00:10:56,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:56,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:10:56,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:10:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:10:56,881 INFO L87 Difference]: Start difference. First operand 45981 states and 49988 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 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 00:11:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:02,938 INFO L93 Difference]: Finished difference Result 155870 states and 169533 transitions. [2022-01-10 00:11:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:11:02,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 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 486 [2022-01-10 00:11:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:03,077 INFO L225 Difference]: With dead ends: 155870 [2022-01-10 00:11:03,077 INFO L226 Difference]: Without dead ends: 110678 [2022-01-10 00:11:03,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 00:11:03,101 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 1880 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 5983 mSolverCounterSat, 1191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 7174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1191 IncrementalHoareTripleChecker+Valid, 5983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:03,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 623 Invalid, 7174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1191 Valid, 5983 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 00:11:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110678 states. [2022-01-10 00:11:04,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110678 to 105038. [2022-01-10 00:11:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105038 states, 105037 states have (on average 1.0820663194874187) internal successors, (113657), 105037 states have internal predecessors, (113657), 0 states have call successors, (0), 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 00:11:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105038 states to 105038 states and 113657 transitions. [2022-01-10 00:11:04,430 INFO L78 Accepts]: Start accepts. Automaton has 105038 states and 113657 transitions. Word has length 486 [2022-01-10 00:11:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:04,430 INFO L470 AbstractCegarLoop]: Abstraction has 105038 states and 113657 transitions. [2022-01-10 00:11:04,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 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 00:11:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand 105038 states and 113657 transitions. [2022-01-10 00:11:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-01-10 00:11:04,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:04,456 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:11:04,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:11:04,456 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -786325056, now seen corresponding path program 1 times [2022-01-10 00:11:04,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:04,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59099352] [2022-01-10 00:11:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:04,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 313 proven. 113 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 00:11:04,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:04,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59099352] [2022-01-10 00:11:04,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59099352] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:11:04,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318586491] [2022-01-10 00:11:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:04,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:11:04,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:11:04,887 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 00:11:04,892 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 00:11:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:05,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:11:05,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:11:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-01-10 00:11:05,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:11:05,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318586491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:05,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:11:05,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-01-10 00:11:05,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714354457] [2022-01-10 00:11:05,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:05,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:05,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:11:05,871 INFO L87 Difference]: Start difference. First operand 105038 states and 113657 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)