/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/Problem16_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:21:44,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:21:44,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:21:45,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:21:45,072 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 00:21:45,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:21:45,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:21:45,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:21:45,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:21:45,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:21:45,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:21:45,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:21:45,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:21:45,109 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:21:45,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:21:45,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:21:45,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:21:45,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:21:45,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:21:45,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:21:45,110 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:21:45,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:21:45,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:21:45,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:21:45,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:21:45,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:21:45,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:21:45,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:21:45,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:21:45,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:21:45,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:21:45,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:21:45,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:21:45,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:21:45,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:21:45,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:21:45,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:21:45,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:21:45,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:21:45,393 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:21:45,395 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:21:45,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label41.c [2022-01-10 00:21:45,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5421d7c2/deea092cace246dc9ed34b6e54bd6196/FLAG7367d4897 [2022-01-10 00:21:46,045 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:21:46,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label41.c [2022-01-10 00:21:46,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5421d7c2/deea092cace246dc9ed34b6e54bd6196/FLAG7367d4897 [2022-01-10 00:21:46,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5421d7c2/deea092cace246dc9ed34b6e54bd6196 [2022-01-10 00:21:46,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:21:46,295 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:21:46,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:21:46,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:21:46,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:21:46,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:21:46" (1/1) ... [2022-01-10 00:21:46,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e05bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:46, skipping insertion in model container [2022-01-10 00:21:46,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:21:46" (1/1) ... [2022-01-10 00:21:46,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:21:46,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:21:46,579 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/Problem16_label41.c[2609,2622] [2022-01-10 00:21:46,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:21:46,914 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:21:46,943 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/Problem16_label41.c[2609,2622] [2022-01-10 00:21:47,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:21:47,108 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:21:47,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47 WrapperNode [2022-01-10 00:21:47,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:21:47,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:21:47,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:21:47,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:21:47,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,261 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1768 [2022-01-10 00:21:47,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:21:47,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:21:47,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:21:47,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:21:47,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:21:47,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:21:47,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:21:47,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:21:47,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (1/1) ... [2022-01-10 00:21:47,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:21:47,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:21:47,440 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 00:21:47,447 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 00:21:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:21:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:21:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:21:47,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:21:47,527 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:21:47,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:21:49,281 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:21:49,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:21:49,298 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:21:49,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:21:49 BoogieIcfgContainer [2022-01-10 00:21:49,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:21:49,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:21:49,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:21:49,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:21:49,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:21:46" (1/3) ... [2022-01-10 00:21:49,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e36cf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:21:49, skipping insertion in model container [2022-01-10 00:21:49,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:21:47" (2/3) ... [2022-01-10 00:21:49,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e36cf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:21:49, skipping insertion in model container [2022-01-10 00:21:49,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:21:49" (3/3) ... [2022-01-10 00:21:49,307 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label41.c [2022-01-10 00:21:49,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:21:49,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:21:49,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:21:49,363 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 00:21:49,364 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:21:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:49,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 00:21:49,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:21:49,390 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] [2022-01-10 00:21:49,391 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:21:49,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:21:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash -573341295, now seen corresponding path program 1 times [2022-01-10 00:21:49,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:21:49,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510735240] [2022-01-10 00:21:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:21:49,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:21:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:21:49,554 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 00:21:49,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:21:49,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510735240] [2022-01-10 00:21:49,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510735240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:21:49,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:21:49,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:21:49,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889451360] [2022-01-10 00:21:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:21:49,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:21:49,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:21:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:21:49,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:21:49,594 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:51,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:21:51,485 INFO L93 Difference]: Finished difference Result 1137 states and 2118 transitions. [2022-01-10 00:21:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:21:51,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-10 00:21:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:21:51,501 INFO L225 Difference]: With dead ends: 1137 [2022-01-10 00:21:51,501 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 00:21:51,505 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 00:21:51,508 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 361 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:21:51,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 114 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:21:51,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 00:21:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-01-10 00:21:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.7004538577912254) internal successors, (1124), 661 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1124 transitions. [2022-01-10 00:21:51,572 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1124 transitions. Word has length 23 [2022-01-10 00:21:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:21:51,572 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 1124 transitions. [2022-01-10 00:21:51,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1124 transitions. [2022-01-10 00:21:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 00:21:51,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:21:51,575 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:21:51,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:21:51,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:21:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:21:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash 772913681, now seen corresponding path program 1 times [2022-01-10 00:21:51,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:21:51,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73612249] [2022-01-10 00:21:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:21:51,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:21:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:21:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:21:51,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:21:51,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73612249] [2022-01-10 00:21:51,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73612249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:21:51,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:21:51,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:21:51,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860770999] [2022-01-10 00:21:51,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:21:51,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:21:51,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:21:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:21:51,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:21:51,688 INFO L87 Difference]: Start difference. First operand 662 states and 1124 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:21:52,966 INFO L93 Difference]: Finished difference Result 1980 states and 3367 transitions. [2022-01-10 00:21:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:21:52,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 00:21:52,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:21:52,976 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 00:21:52,976 INFO L226 Difference]: Without dead ends: 1320 [2022-01-10 00:21:52,980 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 00:21:52,981 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 343 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:21:52,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 77 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:21:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-10 00:21:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-01-10 00:21:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.620166793025019) internal successors, (2137), 1319 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2137 transitions. [2022-01-10 00:21:53,035 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2137 transitions. Word has length 89 [2022-01-10 00:21:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:21:53,036 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 2137 transitions. [2022-01-10 00:21:53,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2137 transitions. [2022-01-10 00:21:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 00:21:53,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:21:53,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:21:53,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:21:53,039 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:21:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:21:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1034653615, now seen corresponding path program 1 times [2022-01-10 00:21:53,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:21:53,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019241082] [2022-01-10 00:21:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:21:53,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:21:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:21:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:21:53,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:21:53,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019241082] [2022-01-10 00:21:53,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019241082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:21:53,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:21:53,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:21:53,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89467733] [2022-01-10 00:21:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:21:53,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:21:53,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:21:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:21:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:21:53,140 INFO L87 Difference]: Start difference. First operand 1320 states and 2137 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:21:54,255 INFO L93 Difference]: Finished difference Result 3296 states and 5285 transitions. [2022-01-10 00:21:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:21:54,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 00:21:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:21:54,264 INFO L225 Difference]: With dead ends: 3296 [2022-01-10 00:21:54,264 INFO L226 Difference]: Without dead ends: 1978 [2022-01-10 00:21:54,266 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 00:21:54,267 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 381 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:21:54,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 155 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:21:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-01-10 00:21:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2022-01-10 00:21:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.3323216995447649) internal successors, (2634), 1977 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2634 transitions. [2022-01-10 00:21:54,306 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2634 transitions. Word has length 90 [2022-01-10 00:21:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:21:54,306 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 2634 transitions. [2022-01-10 00:21:54,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2634 transitions. [2022-01-10 00:21:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 00:21:54,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:21:54,310 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:54,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:21:54,310 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:21:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:21:54,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1590042249, now seen corresponding path program 1 times [2022-01-10 00:21:54,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:21:54,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407729287] [2022-01-10 00:21:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:21:54,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:21:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:21:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:21:54,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:21:54,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407729287] [2022-01-10 00:21:54,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407729287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:21:54,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:21:54,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:21:54,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929770934] [2022-01-10 00:21:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:21:54,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:21:54,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:21:54,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:21:54,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:21:54,468 INFO L87 Difference]: Start difference. First operand 1978 states and 2634 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:21:55,835 INFO L93 Difference]: Finished difference Result 5928 states and 7897 transitions. [2022-01-10 00:21:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:21:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-01-10 00:21:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:21:55,851 INFO L225 Difference]: With dead ends: 5928 [2022-01-10 00:21:55,851 INFO L226 Difference]: Without dead ends: 3952 [2022-01-10 00:21:55,854 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 00:21:55,855 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 183 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:21:55,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 257 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:21:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-01-10 00:21:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2022-01-10 00:21:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 1.2171602126044039) internal successors, (4809), 3951 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 4809 transitions. [2022-01-10 00:21:55,932 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 4809 transitions. Word has length 182 [2022-01-10 00:21:55,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:21:55,933 INFO L470 AbstractCegarLoop]: Abstraction has 3952 states and 4809 transitions. [2022-01-10 00:21:55,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 4809 transitions. [2022-01-10 00:21:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-10 00:21:55,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:21:55,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:55,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:21:55,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:21:55,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:21:55,937 INFO L85 PathProgramCache]: Analyzing trace with hash 387383049, now seen corresponding path program 1 times [2022-01-10 00:21:55,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:21:55,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720550079] [2022-01-10 00:21:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:21:55,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:21:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:21:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:21:56,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:21:56,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720550079] [2022-01-10 00:21:56,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720550079] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:21:56,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069245638] [2022-01-10 00:21:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:21:56,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:21:56,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:21:56,115 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 00:21:56,124 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 00:21:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:21:56,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:21:56,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:21:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 00:21:56,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:21:56,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069245638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:21:56,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:21:56,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-01-10 00:21:56,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841366407] [2022-01-10 00:21:56,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:21:56,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:21:56,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:21:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:21:56,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:21:56,994 INFO L87 Difference]: Start difference. First operand 3952 states and 4809 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:21:58,069 INFO L93 Difference]: Finished difference Result 5270 states and 6254 transitions. [2022-01-10 00:21:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:21:58,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 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 266 [2022-01-10 00:21:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:21:58,090 INFO L225 Difference]: With dead ends: 5270 [2022-01-10 00:21:58,090 INFO L226 Difference]: Without dead ends: 5268 [2022-01-10 00:21:58,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:21:58,097 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 109 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:21:58,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 158 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 00:21:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-01-10 00:21:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4610. [2022-01-10 00:21:58,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 1.2013451941852897) internal successors, (5537), 4609 states have internal predecessors, (5537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 5537 transitions. [2022-01-10 00:21:58,176 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 5537 transitions. Word has length 266 [2022-01-10 00:21:58,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:21:58,177 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 5537 transitions. [2022-01-10 00:21:58,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:21:58,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 5537 transitions. [2022-01-10 00:21:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-01-10 00:21:58,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:21:58,190 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:58,216 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 00:21:58,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:21:58,413 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:21:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:21:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash -939059784, now seen corresponding path program 1 times [2022-01-10 00:21:58,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:21:58,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315389876] [2022-01-10 00:21:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:21:58,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:21:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:21:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 00:21:58,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:21:58,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315389876] [2022-01-10 00:21:58,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315389876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:21:58,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:21:58,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:21:58,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368506429] [2022-01-10 00:21:58,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:21:58,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:21:58,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:21:58,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:21:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:21:58,660 INFO L87 Difference]: Start difference. First operand 4610 states and 5537 transitions. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:00,057 INFO L93 Difference]: Finished difference Result 9588 states and 11454 transitions. [2022-01-10 00:22:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 00:22:00,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 375 [2022-01-10 00:22:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:00,076 INFO L225 Difference]: With dead ends: 9588 [2022-01-10 00:22:00,076 INFO L226 Difference]: Without dead ends: 4980 [2022-01-10 00:22:00,084 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 00:22:00,089 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 175 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:00,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 371 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:22:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4980 states. [2022-01-10 00:22:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4980 to 4939. [2022-01-10 00:22:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 4938 states have (on average 1.1891454029971649) internal successors, (5872), 4938 states have internal predecessors, (5872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 5872 transitions. [2022-01-10 00:22:00,185 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 5872 transitions. Word has length 375 [2022-01-10 00:22:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:00,186 INFO L470 AbstractCegarLoop]: Abstraction has 4939 states and 5872 transitions. [2022-01-10 00:22:00,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 5872 transitions. [2022-01-10 00:22:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-01-10 00:22:00,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:00,193 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:00,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:22:00,193 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash -855652859, now seen corresponding path program 1 times [2022-01-10 00:22:00,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:00,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438091808] [2022-01-10 00:22:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:00,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-01-10 00:22:00,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:00,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438091808] [2022-01-10 00:22:00,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438091808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:00,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:00,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:00,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876332526] [2022-01-10 00:22:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:00,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:00,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:00,359 INFO L87 Difference]: Start difference. First operand 4939 states and 5872 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:01,509 INFO L93 Difference]: Finished difference Result 11850 states and 14302 transitions. [2022-01-10 00:22:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 437 [2022-01-10 00:22:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:01,529 INFO L225 Difference]: With dead ends: 11850 [2022-01-10 00:22:01,530 INFO L226 Difference]: Without dead ends: 5926 [2022-01-10 00:22:01,537 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 00:22:01,538 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 361 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:01,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 540 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 00:22:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5926 states. [2022-01-10 00:22:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5926 to 5926. [2022-01-10 00:22:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5926 states, 5925 states have (on average 1.061434599156118) internal successors, (6289), 5925 states have internal predecessors, (6289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5926 states to 5926 states and 6289 transitions. [2022-01-10 00:22:01,665 INFO L78 Accepts]: Start accepts. Automaton has 5926 states and 6289 transitions. Word has length 437 [2022-01-10 00:22:01,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:01,666 INFO L470 AbstractCegarLoop]: Abstraction has 5926 states and 6289 transitions. [2022-01-10 00:22:01,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5926 states and 6289 transitions. [2022-01-10 00:22:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2022-01-10 00:22:01,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:01,681 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:01,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:22:01,682 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2038861390, now seen corresponding path program 1 times [2022-01-10 00:22:01,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:01,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156922899] [2022-01-10 00:22:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:01,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:01,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 836 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-01-10 00:22:01,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:01,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156922899] [2022-01-10 00:22:01,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156922899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:01,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:01,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:01,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070411561] [2022-01-10 00:22:01,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:01,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:01,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:01,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:01,898 INFO L87 Difference]: Start difference. First operand 5926 states and 6289 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:02,724 INFO L93 Difference]: Finished difference Result 14482 states and 15474 transitions. [2022-01-10 00:22:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:02,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 679 [2022-01-10 00:22:02,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:02,747 INFO L225 Difference]: With dead ends: 14482 [2022-01-10 00:22:02,748 INFO L226 Difference]: Without dead ends: 8887 [2022-01-10 00:22:02,756 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 00:22:02,756 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 219 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:02,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 426 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 00:22:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2022-01-10 00:22:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 8558. [2022-01-10 00:22:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8557 states have (on average 1.048381442094192) internal successors, (8971), 8557 states have internal predecessors, (8971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 8971 transitions. [2022-01-10 00:22:02,928 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 8971 transitions. Word has length 679 [2022-01-10 00:22:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:02,928 INFO L470 AbstractCegarLoop]: Abstraction has 8558 states and 8971 transitions. [2022-01-10 00:22:02,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 8971 transitions. [2022-01-10 00:22:02,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2022-01-10 00:22:02,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:02,952 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:22:02,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:22:02,952 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1134557097, now seen corresponding path program 1 times [2022-01-10 00:22:02,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:02,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160214604] [2022-01-10 00:22:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:02,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 803 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-01-10 00:22:03,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:03,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160214604] [2022-01-10 00:22:03,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160214604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:03,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:03,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:03,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437598051] [2022-01-10 00:22:03,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:03,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:03,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:03,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:03,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:03,214 INFO L87 Difference]: Start difference. First operand 8558 states and 8971 transitions. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:04,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:04,001 INFO L93 Difference]: Finished difference Result 19417 states and 20484 transitions. [2022-01-10 00:22:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:04,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 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 781 [2022-01-10 00:22:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:04,018 INFO L225 Difference]: With dead ends: 19417 [2022-01-10 00:22:04,018 INFO L226 Difference]: Without dead ends: 11190 [2022-01-10 00:22:04,028 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 00:22:04,029 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 175 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:04,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 414 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2022-01-10 00:22:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 10532. [2022-01-10 00:22:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10532 states, 10531 states have (on average 1.0454847592821195) internal successors, (11010), 10531 states have internal predecessors, (11010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10532 states to 10532 states and 11010 transitions. [2022-01-10 00:22:04,197 INFO L78 Accepts]: Start accepts. Automaton has 10532 states and 11010 transitions. Word has length 781 [2022-01-10 00:22:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:04,197 INFO L470 AbstractCegarLoop]: Abstraction has 10532 states and 11010 transitions. [2022-01-10 00:22:04,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:04,198 INFO L276 IsEmpty]: Start isEmpty. Operand 10532 states and 11010 transitions. [2022-01-10 00:22:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2022-01-10 00:22:04,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:04,216 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:04,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:22:04,217 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1374532913, now seen corresponding path program 1 times [2022-01-10 00:22:04,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:04,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846314759] [2022-01-10 00:22:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:04,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1933 backedges. 1414 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-01-10 00:22:04,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:04,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846314759] [2022-01-10 00:22:04,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846314759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:04,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:04,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:04,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045299529] [2022-01-10 00:22:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:04,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:04,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:04,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:04,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:04,577 INFO L87 Difference]: Start difference. First operand 10532 states and 11010 transitions. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:05,485 INFO L93 Difference]: Finished difference Result 23694 states and 24916 transitions. [2022-01-10 00:22:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 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 1039 [2022-01-10 00:22:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:05,510 INFO L225 Difference]: With dead ends: 23694 [2022-01-10 00:22:05,510 INFO L226 Difference]: Without dead ends: 13493 [2022-01-10 00:22:05,520 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 00:22:05,521 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:05,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 433 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 00:22:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2022-01-10 00:22:05,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 12835. [2022-01-10 00:22:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0409069658719028) internal successors, (13359), 12834 states have internal predecessors, (13359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13359 transitions. [2022-01-10 00:22:05,709 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13359 transitions. Word has length 1039 [2022-01-10 00:22:05,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:05,710 INFO L470 AbstractCegarLoop]: Abstraction has 12835 states and 13359 transitions. [2022-01-10 00:22:05,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13359 transitions. [2022-01-10 00:22:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2022-01-10 00:22:05,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:05,732 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:05,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:22:05,732 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1986780064, now seen corresponding path program 1 times [2022-01-10 00:22:05,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:05,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044328] [2022-01-10 00:22:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:05,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1938 backedges. 763 proven. 784 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-01-10 00:22:06,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:06,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044328] [2022-01-10 00:22:06,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:22:06,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974638572] [2022-01-10 00:22:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:06,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:22:06,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:22:06,262 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 00:22:06,264 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 00:22:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:06,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:22:06,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:22:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1938 backedges. 1130 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2022-01-10 00:22:08,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:22:08,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974638572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:08,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:22:08,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-10 00:22:08,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046630975] [2022-01-10 00:22:08,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:08,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:08,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:08,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:08,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:22:08,062 INFO L87 Difference]: Start difference. First operand 12835 states and 13359 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:08,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:08,803 INFO L93 Difference]: Finished difference Result 25339 states and 26385 transitions. [2022-01-10 00:22:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:08,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 1040 [2022-01-10 00:22:08,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:08,824 INFO L225 Difference]: With dead ends: 25339 [2022-01-10 00:22:08,824 INFO L226 Difference]: Without dead ends: 12835 [2022-01-10 00:22:08,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 1040 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:22:08,836 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 117 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:08,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 377 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12835 states. [2022-01-10 00:22:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12835 to 12835. [2022-01-10 00:22:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0363877201184355) internal successors, (13301), 12834 states have internal predecessors, (13301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13301 transitions. [2022-01-10 00:22:09,060 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13301 transitions. Word has length 1040 [2022-01-10 00:22:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:09,060 INFO L470 AbstractCegarLoop]: Abstraction has 12835 states and 13301 transitions. [2022-01-10 00:22:09,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13301 transitions. [2022-01-10 00:22:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2022-01-10 00:22:09,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:09,093 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:09,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:22:09,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 00:22:09,317 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -286072666, now seen corresponding path program 1 times [2022-01-10 00:22:09,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:09,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427320617] [2022-01-10 00:22:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:09,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2754 backedges. 941 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2022-01-10 00:22:09,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:09,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427320617] [2022-01-10 00:22:09,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427320617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:09,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:09,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:09,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512531110] [2022-01-10 00:22:09,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:09,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:09,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:09,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:09,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:09,756 INFO L87 Difference]: Start difference. First operand 12835 states and 13301 transitions. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:10,523 INFO L93 Difference]: Finished difference Result 27642 states and 28662 transitions. [2022-01-10 00:22:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:10,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1211 [2022-01-10 00:22:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:10,542 INFO L225 Difference]: With dead ends: 27642 [2022-01-10 00:22:10,542 INFO L226 Difference]: Without dead ends: 13493 [2022-01-10 00:22:10,554 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 00:22:10,554 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 170 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:10,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 412 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2022-01-10 00:22:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 11519. [2022-01-10 00:22:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11519 states, 11518 states have (on average 1.0298662962319847) internal successors, (11862), 11518 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 11862 transitions. [2022-01-10 00:22:10,684 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 11862 transitions. Word has length 1211 [2022-01-10 00:22:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:10,685 INFO L470 AbstractCegarLoop]: Abstraction has 11519 states and 11862 transitions. [2022-01-10 00:22:10,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:10,686 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 11862 transitions. [2022-01-10 00:22:10,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1538 [2022-01-10 00:22:10,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:10,714 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:22:10,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:22:10,715 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:10,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash -10171569, now seen corresponding path program 1 times [2022-01-10 00:22:10,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:10,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601427151] [2022-01-10 00:22:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:10,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4195 backedges. 2950 proven. 0 refuted. 0 times theorem prover too weak. 1245 trivial. 0 not checked. [2022-01-10 00:22:11,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:11,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601427151] [2022-01-10 00:22:11,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601427151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:11,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:11,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 00:22:11,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541462300] [2022-01-10 00:22:11,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:11,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:22:11,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:22:11,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:22:11,414 INFO L87 Difference]: Start difference. First operand 11519 states and 11862 transitions. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:12,705 INFO L93 Difference]: Finished difference Result 23374 states and 24079 transitions. [2022-01-10 00:22:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 00:22:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 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 1537 [2022-01-10 00:22:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:12,725 INFO L225 Difference]: With dead ends: 23374 [2022-01-10 00:22:12,725 INFO L226 Difference]: Without dead ends: 12186 [2022-01-10 00:22:12,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:22:12,735 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 601 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:12,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 434 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:22:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12186 states. [2022-01-10 00:22:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12186 to 11848. [2022-01-10 00:22:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 11847 states have (on average 1.0299653920823837) internal successors, (12202), 11847 states have internal predecessors, (12202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 12202 transitions. [2022-01-10 00:22:12,863 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 12202 transitions. Word has length 1537 [2022-01-10 00:22:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:12,864 INFO L470 AbstractCegarLoop]: Abstraction has 11848 states and 12202 transitions. [2022-01-10 00:22:12,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 12202 transitions. [2022-01-10 00:22:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1670 [2022-01-10 00:22:12,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:12,934 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:12,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:22:12,934 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1328441530, now seen corresponding path program 1 times [2022-01-10 00:22:12,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:12,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571964186] [2022-01-10 00:22:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:12,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 3466 proven. 0 refuted. 0 times theorem prover too weak. 2310 trivial. 0 not checked. [2022-01-10 00:22:13,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:13,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571964186] [2022-01-10 00:22:13,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571964186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:13,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:13,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:13,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138069000] [2022-01-10 00:22:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:13,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:13,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:13,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:13,454 INFO L87 Difference]: Start difference. First operand 11848 states and 12202 transitions. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:14,341 INFO L93 Difference]: Finished difference Result 23365 states and 24071 transitions. [2022-01-10 00:22:14,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:14,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 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 1669 [2022-01-10 00:22:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:14,359 INFO L225 Difference]: With dead ends: 23365 [2022-01-10 00:22:14,359 INFO L226 Difference]: Without dead ends: 11848 [2022-01-10 00:22:14,368 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 00:22:14,369 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 192 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:14,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 419 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 00:22:14,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2022-01-10 00:22:14,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11519. [2022-01-10 00:22:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11519 states, 11518 states have (on average 1.0204028477166174) internal successors, (11753), 11518 states have internal predecessors, (11753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 11753 transitions. [2022-01-10 00:22:14,532 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 11753 transitions. Word has length 1669 [2022-01-10 00:22:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:14,532 INFO L470 AbstractCegarLoop]: Abstraction has 11519 states and 11753 transitions. [2022-01-10 00:22:14,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 11753 transitions. [2022-01-10 00:22:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1695 [2022-01-10 00:22:14,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:14,565 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:14,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:22:14,565 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash -928392436, now seen corresponding path program 1 times [2022-01-10 00:22:14,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:14,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888193854] [2022-01-10 00:22:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:14,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5998 backedges. 3820 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2022-01-10 00:22:15,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:15,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888193854] [2022-01-10 00:22:15,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888193854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:22:15,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:22:15,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:22:15,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480467719] [2022-01-10 00:22:15,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:22:15,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:22:15,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:15,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:22:15,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:22:15,134 INFO L87 Difference]: Start difference. First operand 11519 states and 11753 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:15,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:15,872 INFO L93 Difference]: Finished difference Result 23365 states and 23842 transitions. [2022-01-10 00:22:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:22:15,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 1694 [2022-01-10 00:22:15,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:15,884 INFO L225 Difference]: With dead ends: 23365 [2022-01-10 00:22:15,884 INFO L226 Difference]: Without dead ends: 12177 [2022-01-10 00:22:15,890 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 00:22:15,891 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:15,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 430 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 00:22:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12177 states. [2022-01-10 00:22:15,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12177 to 12177. [2022-01-10 00:22:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12177 states, 12176 states have (on average 1.0197109067017083) internal successors, (12416), 12176 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 12416 transitions. [2022-01-10 00:22:16,013 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 12416 transitions. Word has length 1694 [2022-01-10 00:22:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:16,014 INFO L470 AbstractCegarLoop]: Abstraction has 12177 states and 12416 transitions. [2022-01-10 00:22:16,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 12416 transitions. [2022-01-10 00:22:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1749 [2022-01-10 00:22:16,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:16,042 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:22:16,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:22:16,043 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1808845613, now seen corresponding path program 1 times [2022-01-10 00:22:16,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240147264] [2022-01-10 00:22:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:16,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6020 backedges. 3154 proven. 66 refuted. 0 times theorem prover too weak. 2800 trivial. 0 not checked. [2022-01-10 00:22:16,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:16,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240147264] [2022-01-10 00:22:16,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240147264] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:22:16,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740442211] [2022-01-10 00:22:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:16,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:22:16,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:22:16,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:22:16,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:22:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:17,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 00:22:17,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:22:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6020 backedges. 2495 proven. 201 refuted. 0 times theorem prover too weak. 3324 trivial. 0 not checked. [2022-01-10 00:22:22,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:22:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6020 backedges. 2495 proven. 201 refuted. 0 times theorem prover too weak. 3324 trivial. 0 not checked. [2022-01-10 00:22:29,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740442211] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:22:29,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:22:29,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-01-10 00:22:29,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037680383] [2022-01-10 00:22:29,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:22:29,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 00:22:29,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:22:29,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 00:22:29,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:22:29,194 INFO L87 Difference]: Start difference. First operand 12177 states and 12416 transitions. Second operand has 9 states, 9 states have (on average 190.0) internal successors, (1710), 8 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:22:33,389 INFO L93 Difference]: Finished difference Result 35538 states and 36231 transitions. [2022-01-10 00:22:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 00:22:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 190.0) internal successors, (1710), 8 states have internal predecessors, (1710), 0 states have call successors, (0), 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 1748 [2022-01-10 00:22:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:22:33,415 INFO L225 Difference]: With dead ends: 35538 [2022-01-10 00:22:33,416 INFO L226 Difference]: Without dead ends: 23692 [2022-01-10 00:22:33,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3506 GetRequests, 3491 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-01-10 00:22:33,428 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1937 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6450 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 6690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 6450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:22:33,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1937 Valid, 89 Invalid, 6690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 6450 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-10 00:22:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23692 states. [2022-01-10 00:22:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23692 to 17770. [2022-01-10 00:22:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17770 states, 17769 states have (on average 1.0187967809105747) internal successors, (18103), 17769 states have internal predecessors, (18103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18103 transitions. [2022-01-10 00:22:33,660 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18103 transitions. Word has length 1748 [2022-01-10 00:22:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:22:33,660 INFO L470 AbstractCegarLoop]: Abstraction has 17770 states and 18103 transitions. [2022-01-10 00:22:33,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 190.0) internal successors, (1710), 8 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:22:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18103 transitions. [2022-01-10 00:22:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1779 [2022-01-10 00:22:33,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:22:33,691 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-10 00:22:33,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 00:22:33,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:22:33,894 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:22:33,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:22:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1510512431, now seen corresponding path program 1 times [2022-01-10 00:22:33,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:22:33,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495936310] [2022-01-10 00:22:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:33,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:22:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6830 backedges. 2499 proven. 156 refuted. 0 times theorem prover too weak. 4175 trivial. 0 not checked. [2022-01-10 00:22:34,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:22:34,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495936310] [2022-01-10 00:22:34,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495936310] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:22:34,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475467989] [2022-01-10 00:22:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:22:34,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:22:34,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:22:34,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:22:34,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 00:22:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:22:34,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:22:34,891 INFO L286 TraceCheckSpWp]: Computing forward predicates...