/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:10:45,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:10:45,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:10:45,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:10:45,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:10:45,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:10:45,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:10:45,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:10:45,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:10:45,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:10:45,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:10:45,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:10:45,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:10:45,913 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:10:45,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:10:45,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:10:45,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:10:45,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:10:45,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:10:45,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:10:45,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:10:45,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:10:45,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:10:45,916 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:10:45,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:10:45,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:10:45,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:10:46,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:10:46,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:10:46,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:10:46,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:10:46,121 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:10:46,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36.c [2022-01-10 00:10:46,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94decb1bb/c563ac7c3c7f4794a315c450abce88e6/FLAGe1a88d750 [2022-01-10 00:10:46,765 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:10:46,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36.c [2022-01-10 00:10:46,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94decb1bb/c563ac7c3c7f4794a315c450abce88e6/FLAGe1a88d750 [2022-01-10 00:10:46,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94decb1bb/c563ac7c3c7f4794a315c450abce88e6 [2022-01-10 00:10:46,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:10:46,942 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:10:46,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:10:46,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:10:46,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:10:46,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:46" (1/1) ... [2022-01-10 00:10:46,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd43ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:46, skipping insertion in model container [2022-01-10 00:10:46,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:46" (1/1) ... [2022-01-10 00:10:46,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:10:47,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:10:47,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36.c[1933,1946] [2022-01-10 00:10:47,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:10:47,922 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:10:47,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36.c[1933,1946] [2022-01-10 00:10:48,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:10:48,325 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:10:48,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48 WrapperNode [2022-01-10 00:10:48,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:10:48,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:10:48,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:10:48,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:10:48,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:48,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:48,747 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-01-10 00:10:48,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:10:48,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:10:48,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:10:48,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:10:48,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:48,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:48,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:48,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:49,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:49,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:49,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:49,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:10:49,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:10:49,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:10:49,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:10:49,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (1/1) ... [2022-01-10 00:10:49,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:10:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:10:49,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:10:49,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 00:10:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:10:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:10:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:10:49,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:10:49,754 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:10:49,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:10:53,187 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:10:53,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:10:53,199 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:10:53,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:53 BoogieIcfgContainer [2022-01-10 00:10:53,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:10:53,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:10:53,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:10:53,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:10:53,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:10:46" (1/3) ... [2022-01-10 00:10:53,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edfca70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:10:53, skipping insertion in model container [2022-01-10 00:10:53,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:48" (2/3) ... [2022-01-10 00:10:53,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edfca70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:10:53, skipping insertion in model container [2022-01-10 00:10:53,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:53" (3/3) ... [2022-01-10 00:10:53,206 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label36.c [2022-01-10 00:10:53,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:10:53,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:10:53,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:10:53,250 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 00:10:53,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:10:53,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 00:10:53,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:53,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:10:53,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:53,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:53,282 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2022-01-10 00:10:53,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:53,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175269608] [2022-01-10 00:10:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:53,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:53,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:53,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175269608] [2022-01-10 00:10:53,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175269608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:53,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:53,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:53,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554677151] [2022-01-10 00:10:53,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:53,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:53,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:53,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:53,453 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:56,739 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2022-01-10 00:10:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:56,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-01-10 00:10:56,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:56,764 INFO L225 Difference]: With dead ends: 3035 [2022-01-10 00:10:56,765 INFO L226 Difference]: Without dead ends: 1873 [2022-01-10 00:10:56,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:56,777 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 894 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:56,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 00:10:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-01-10 00:10:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2022-01-10 00:10:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2022-01-10 00:10:56,880 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 11 [2022-01-10 00:10:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:56,881 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2022-01-10 00:10:56,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:56,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2022-01-10 00:10:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 00:10:56,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:56,883 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:10:56,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:10:56,884 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:56,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:56,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1609309291, now seen corresponding path program 1 times [2022-01-10 00:10:56,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:56,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917461424] [2022-01-10 00:10:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:56,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:57,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:57,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917461424] [2022-01-10 00:10:57,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917461424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:57,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:57,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:57,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532637958] [2022-01-10 00:10:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:57,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:57,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:57,054 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:00,435 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2022-01-10 00:11:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:00,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 00:11:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:00,445 INFO L225 Difference]: With dead ends: 5317 [2022-01-10 00:11:00,445 INFO L226 Difference]: Without dead ends: 3460 [2022-01-10 00:11:00,447 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 00:11:00,448 INFO L933 BasicCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:00,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 00:11:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-01-10 00:11:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2022-01-10 00:11:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2022-01-10 00:11:00,497 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 83 [2022-01-10 00:11:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:00,499 INFO L470 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2022-01-10 00:11:00,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2022-01-10 00:11:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 00:11:00,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:00,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:00,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:11:00,503 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:00,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1227644418, now seen corresponding path program 1 times [2022-01-10 00:11:00,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:00,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314403242] [2022-01-10 00:11:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:00,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:00,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:00,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314403242] [2022-01-10 00:11:00,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314403242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:00,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:00,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:00,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304733054] [2022-01-10 00:11:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:00,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:11:00,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:11:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:11:00,673 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:05,569 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2022-01-10 00:11:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:11:05,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 00:11:05,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:05,630 INFO L225 Difference]: With dead ends: 10870 [2022-01-10 00:11:05,630 INFO L226 Difference]: Without dead ends: 7413 [2022-01-10 00:11:05,638 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 00:11:05,643 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 2581 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:05,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-01-10 00:11:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-01-10 00:11:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2022-01-10 00:11:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2701389825934422) internal successors, (9413), 7411 states have internal predecessors, (9413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9413 transitions. [2022-01-10 00:11:05,921 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9413 transitions. Word has length 97 [2022-01-10 00:11:05,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:05,922 INFO L470 AbstractCegarLoop]: Abstraction has 7412 states and 9413 transitions. [2022-01-10 00:11:05,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9413 transitions. [2022-01-10 00:11:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 00:11:05,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:05,927 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:05,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:11:05,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash -108302625, now seen corresponding path program 1 times [2022-01-10 00:11:05,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:05,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641650299] [2022-01-10 00:11:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:05,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:06,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:06,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641650299] [2022-01-10 00:11:06,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641650299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:06,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:06,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:06,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711991920] [2022-01-10 00:11:06,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:06,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:06,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:06,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:06,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:06,015 INFO L87 Difference]: Start difference. First operand 7412 states and 9413 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:08,902 INFO L93 Difference]: Finished difference Result 17195 states and 22713 transitions. [2022-01-10 00:11:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 00:11:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:08,929 INFO L225 Difference]: With dead ends: 17195 [2022-01-10 00:11:08,929 INFO L226 Difference]: Without dead ends: 10572 [2022-01-10 00:11:08,937 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 00:11:08,938 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 957 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:08,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 904 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:11:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10572 states. [2022-01-10 00:11:09,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10572 to 10564. [2022-01-10 00:11:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10564 states, 10563 states have (on average 1.253905140585061) internal successors, (13245), 10563 states have internal predecessors, (13245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10564 states to 10564 states and 13245 transitions. [2022-01-10 00:11:09,099 INFO L78 Accepts]: Start accepts. Automaton has 10564 states and 13245 transitions. Word has length 107 [2022-01-10 00:11:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:09,100 INFO L470 AbstractCegarLoop]: Abstraction has 10564 states and 13245 transitions. [2022-01-10 00:11:09,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 10564 states and 13245 transitions. [2022-01-10 00:11:09,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 00:11:09,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:09,108 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:09,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:11:09,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:09,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash 779082744, now seen corresponding path program 1 times [2022-01-10 00:11:09,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:09,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102215210] [2022-01-10 00:11:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:09,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-01-10 00:11:09,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:09,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102215210] [2022-01-10 00:11:09,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102215210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:09,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:09,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:09,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402650636] [2022-01-10 00:11:09,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:09,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:09,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:09,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:09,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:09,220 INFO L87 Difference]: Start difference. First operand 10564 states and 13245 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:12,252 INFO L93 Difference]: Finished difference Result 23508 states and 30389 transitions. [2022-01-10 00:11:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 196 [2022-01-10 00:11:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:12,284 INFO L225 Difference]: With dead ends: 23508 [2022-01-10 00:11:12,284 INFO L226 Difference]: Without dead ends: 13733 [2022-01-10 00:11:12,296 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 00:11:12,297 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 1013 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:12,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 862 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:11:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2022-01-10 00:11:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 13723. [2022-01-10 00:11:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13723 states, 13722 states have (on average 1.2664334645095467) internal successors, (17378), 13722 states have internal predecessors, (17378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13723 states to 13723 states and 17378 transitions. [2022-01-10 00:11:12,682 INFO L78 Accepts]: Start accepts. Automaton has 13723 states and 17378 transitions. Word has length 196 [2022-01-10 00:11:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:12,682 INFO L470 AbstractCegarLoop]: Abstraction has 13723 states and 17378 transitions. [2022-01-10 00:11:12,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 13723 states and 17378 transitions. [2022-01-10 00:11:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-01-10 00:11:12,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:12,701 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:12,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:11:12,702 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:12,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1434792581, now seen corresponding path program 1 times [2022-01-10 00:11:12,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:12,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747968636] [2022-01-10 00:11:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:12,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-10 00:11:12,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:12,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747968636] [2022-01-10 00:11:12,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747968636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:12,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:12,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:12,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777087659] [2022-01-10 00:11:12,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:12,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:12,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:12,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:12,855 INFO L87 Difference]: Start difference. First operand 13723 states and 17378 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:16,883 INFO L93 Difference]: Finished difference Result 32945 states and 42853 transitions. [2022-01-10 00:11:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2022-01-10 00:11:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:17,113 INFO L225 Difference]: With dead ends: 32945 [2022-01-10 00:11:17,113 INFO L226 Difference]: Without dead ends: 20011 [2022-01-10 00:11:17,198 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 00:11:17,200 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 1152 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:17,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 1552 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-10 00:11:17,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20011 states. [2022-01-10 00:11:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20011 to 20010. [2022-01-10 00:11:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20010 states, 20009 states have (on average 1.2513868759058424) internal successors, (25039), 20009 states have internal predecessors, (25039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20010 states to 20010 states and 25039 transitions. [2022-01-10 00:11:17,826 INFO L78 Accepts]: Start accepts. Automaton has 20010 states and 25039 transitions. Word has length 227 [2022-01-10 00:11:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:17,827 INFO L470 AbstractCegarLoop]: Abstraction has 20010 states and 25039 transitions. [2022-01-10 00:11:17,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 20010 states and 25039 transitions. [2022-01-10 00:11:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-01-10 00:11:17,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:17,846 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:17,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:11:17,846 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash -696232707, now seen corresponding path program 1 times [2022-01-10 00:11:17,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:17,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232235372] [2022-01-10 00:11:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:17,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:18,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232235372] [2022-01-10 00:11:18,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232235372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:18,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:18,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:18,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123295973] [2022-01-10 00:11:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:18,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:11:18,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:18,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:11:18,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:11:18,146 INFO L87 Difference]: Start difference. First operand 20010 states and 25039 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:22,784 INFO L93 Difference]: Finished difference Result 54214 states and 66857 transitions. [2022-01-10 00:11:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:11:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 273 [2022-01-10 00:11:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:22,844 INFO L225 Difference]: With dead ends: 54214 [2022-01-10 00:11:22,844 INFO L226 Difference]: Without dead ends: 34993 [2022-01-10 00:11:22,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:11:22,860 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 2209 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 4151 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 4803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 4151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:22,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2209 Valid, 899 Invalid, 4803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 4151 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 00:11:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34993 states. [2022-01-10 00:11:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34993 to 34983. [2022-01-10 00:11:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34983 states, 34982 states have (on average 1.206220341890115) internal successors, (42196), 34982 states have internal predecessors, (42196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34983 states to 34983 states and 42196 transitions. [2022-01-10 00:11:23,210 INFO L78 Accepts]: Start accepts. Automaton has 34983 states and 42196 transitions. Word has length 273 [2022-01-10 00:11:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:23,210 INFO L470 AbstractCegarLoop]: Abstraction has 34983 states and 42196 transitions. [2022-01-10 00:11:23,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 34983 states and 42196 transitions. [2022-01-10 00:11:23,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-01-10 00:11:23,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:23,215 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:23,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:11:23,216 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1312002571, now seen corresponding path program 1 times [2022-01-10 00:11:23,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:23,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790689335] [2022-01-10 00:11:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:23,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 31 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:11:23,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:23,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790689335] [2022-01-10 00:11:23,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790689335] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:11:23,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121585552] [2022-01-10 00:11:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:23,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:11:23,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:11:23,470 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 00:11:23,473 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 00:11:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:23,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 00:11:23,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:11:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 00:11:24,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:11:24,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121585552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:24,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:11:24,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-01-10 00:11:24,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042889901] [2022-01-10 00:11:24,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:24,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:24,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:11:24,689 INFO L87 Difference]: Start difference. First operand 34983 states and 42196 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:27,340 INFO L93 Difference]: Finished difference Result 71545 states and 86119 transitions. [2022-01-10 00:11:27,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:27,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 302 [2022-01-10 00:11:27,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:27,384 INFO L225 Difference]: With dead ends: 71545 [2022-01-10 00:11:27,384 INFO L226 Difference]: Without dead ends: 37351 [2022-01-10 00:11:27,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:11:27,412 INFO L933 BasicCegarLoop]: 1050 mSDtfsCounter, 643 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:27,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 1185 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:11:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37351 states. [2022-01-10 00:11:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37351 to 36557. [2022-01-10 00:11:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36557 states, 36556 states have (on average 1.2000765948134369) internal successors, (43870), 36556 states have internal predecessors, (43870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36557 states to 36557 states and 43870 transitions. [2022-01-10 00:11:28,513 INFO L78 Accepts]: Start accepts. Automaton has 36557 states and 43870 transitions. Word has length 302 [2022-01-10 00:11:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:28,514 INFO L470 AbstractCegarLoop]: Abstraction has 36557 states and 43870 transitions. [2022-01-10 00:11:28,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 36557 states and 43870 transitions. [2022-01-10 00:11:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-01-10 00:11:28,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:28,519 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:28,540 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 00:11:28,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:11:28,737 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash -493121243, now seen corresponding path program 1 times [2022-01-10 00:11:28,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:28,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717093288] [2022-01-10 00:11:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:28,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-10 00:11:29,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:29,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717093288] [2022-01-10 00:11:29,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717093288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:29,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:29,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:29,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093996703] [2022-01-10 00:11:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:29,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:29,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:29,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:29,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:29,064 INFO L87 Difference]: Start difference. First operand 36557 states and 43870 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:31,604 INFO L93 Difference]: Finished difference Result 71522 states and 85753 transitions. [2022-01-10 00:11:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:31,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 305 [2022-01-10 00:11:31,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:31,646 INFO L225 Difference]: With dead ends: 71522 [2022-01-10 00:11:31,647 INFO L226 Difference]: Without dead ends: 35754 [2022-01-10 00:11:31,665 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 00:11:31,667 INFO L933 BasicCegarLoop]: 1498 mSDtfsCounter, 1026 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:31,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 1632 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:11:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35754 states. [2022-01-10 00:11:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35754 to 34965. [2022-01-10 00:11:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34965 states, 34964 states have (on average 1.1313636883651756) internal successors, (39557), 34964 states have internal predecessors, (39557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34965 states to 34965 states and 39557 transitions. [2022-01-10 00:11:32,194 INFO L78 Accepts]: Start accepts. Automaton has 34965 states and 39557 transitions. Word has length 305 [2022-01-10 00:11:32,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:32,194 INFO L470 AbstractCegarLoop]: Abstraction has 34965 states and 39557 transitions. [2022-01-10 00:11:32,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 34965 states and 39557 transitions. [2022-01-10 00:11:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-10 00:11:32,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:32,199 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:32,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:11:32,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash -704785122, now seen corresponding path program 1 times [2022-01-10 00:11:32,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:32,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448320047] [2022-01-10 00:11:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:32,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-10 00:11:32,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:32,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448320047] [2022-01-10 00:11:32,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448320047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:32,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:32,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:32,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949682732] [2022-01-10 00:11:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:32,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:32,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:32,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:32,310 INFO L87 Difference]: Start difference. First operand 34965 states and 39557 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:35,628 INFO L93 Difference]: Finished difference Result 92776 states and 105171 transitions. [2022-01-10 00:11:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:35,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 309 [2022-01-10 00:11:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:35,709 INFO L225 Difference]: With dead ends: 92776 [2022-01-10 00:11:35,709 INFO L226 Difference]: Without dead ends: 57021 [2022-01-10 00:11:35,737 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 00:11:35,737 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 762 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:35,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 990 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:11:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57021 states. [2022-01-10 00:11:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57021 to 54645. [2022-01-10 00:11:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54645 states, 54644 states have (on average 1.0941548934924237) internal successors, (59789), 54644 states have internal predecessors, (59789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:36,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54645 states to 54645 states and 59789 transitions. [2022-01-10 00:11:36,528 INFO L78 Accepts]: Start accepts. Automaton has 54645 states and 59789 transitions. Word has length 309 [2022-01-10 00:11:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:36,529 INFO L470 AbstractCegarLoop]: Abstraction has 54645 states and 59789 transitions. [2022-01-10 00:11:36,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 54645 states and 59789 transitions. [2022-01-10 00:11:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-01-10 00:11:36,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:36,537 INFO L514 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:36,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:11:36,538 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:36,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1451394545, now seen corresponding path program 1 times [2022-01-10 00:11:36,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:36,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52773033] [2022-01-10 00:11:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:36,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-01-10 00:11:36,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:36,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52773033] [2022-01-10 00:11:36,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52773033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:36,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:36,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:36,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130233131] [2022-01-10 00:11:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:36,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:11:36,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:11:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:11:36,640 INFO L87 Difference]: Start difference. First operand 54645 states and 59789 transitions. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:42,904 INFO L93 Difference]: Finished difference Result 174782 states and 190975 transitions. [2022-01-10 00:11:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:11:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 460 [2022-01-10 00:11:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:43,063 INFO L225 Difference]: With dead ends: 174782 [2022-01-10 00:11:43,064 INFO L226 Difference]: Without dead ends: 120926 [2022-01-10 00:11:43,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:11:43,090 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 1674 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 6354 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 7235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 6354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:43,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1674 Valid, 908 Invalid, 7235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 6354 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 00:11:43,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120926 states. [2022-01-10 00:11:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120926 to 119241. [2022-01-10 00:11:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119241 states, 119240 states have (on average 1.0827658503857767) internal successors, (129109), 119240 states have internal predecessors, (129109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119241 states to 119241 states and 129109 transitions. [2022-01-10 00:11:44,773 INFO L78 Accepts]: Start accepts. Automaton has 119241 states and 129109 transitions. Word has length 460 [2022-01-10 00:11:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:44,773 INFO L470 AbstractCegarLoop]: Abstraction has 119241 states and 129109 transitions. [2022-01-10 00:11:44,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 119241 states and 129109 transitions. [2022-01-10 00:11:44,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-01-10 00:11:44,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:44,802 INFO L514 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:44,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:11:44,802 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:44,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1959639978, now seen corresponding path program 1 times [2022-01-10 00:11:44,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:44,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265403211] [2022-01-10 00:11:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:44,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-01-10 00:11:45,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:45,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265403211] [2022-01-10 00:11:45,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265403211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:45,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:45,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:45,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840925339] [2022-01-10 00:11:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:45,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:45,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:45,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:45,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:45,111 INFO L87 Difference]: Start difference. First operand 119241 states and 129109 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:48,091 INFO L93 Difference]: Finished difference Result 239272 states and 259019 transitions. [2022-01-10 00:11:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 471 [2022-01-10 00:11:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:48,404 INFO L225 Difference]: With dead ends: 239272 [2022-01-10 00:11:48,404 INFO L226 Difference]: Without dead ends: 120820 [2022-01-10 00:11:48,444 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 00:11:48,445 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 831 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:48,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 1427 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:11:48,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120820 states. [2022-01-10 00:11:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120820 to 119234. [2022-01-10 00:11:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119234 states, 119233 states have (on average 1.0619627116653947) internal successors, (126621), 119233 states have internal predecessors, (126621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119234 states to 119234 states and 126621 transitions. [2022-01-10 00:11:50,047 INFO L78 Accepts]: Start accepts. Automaton has 119234 states and 126621 transitions. Word has length 471 [2022-01-10 00:11:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:50,048 INFO L470 AbstractCegarLoop]: Abstraction has 119234 states and 126621 transitions. [2022-01-10 00:11:50,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 119234 states and 126621 transitions. [2022-01-10 00:11:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-01-10 00:11:50,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:50,060 INFO L514 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:50,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:11:50,065 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:50,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1417502575, now seen corresponding path program 1 times [2022-01-10 00:11:50,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:50,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446392235] [2022-01-10 00:11:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:50,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-01-10 00:11:50,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:50,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446392235] [2022-01-10 00:11:50,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446392235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:50,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:50,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:11:50,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116486109] [2022-01-10 00:11:50,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:50,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:50,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:50,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:50,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:50,336 INFO L87 Difference]: Start difference. First operand 119234 states and 126621 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:53,197 INFO L93 Difference]: Finished difference Result 225877 states and 240296 transitions. [2022-01-10 00:11:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:53,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 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 478 [2022-01-10 00:11:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:53,470 INFO L225 Difference]: With dead ends: 225877 [2022-01-10 00:11:53,470 INFO L226 Difference]: Without dead ends: 119243 [2022-01-10 00:11:53,509 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 00:11:53,510 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 720 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:53,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 1114 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:11:53,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119243 states. [2022-01-10 00:11:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119243 to 119234. [2022-01-10 00:11:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119234 states, 119233 states have (on average 1.0615852993718182) internal successors, (126576), 119233 states have internal predecessors, (126576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119234 states to 119234 states and 126576 transitions. [2022-01-10 00:11:55,096 INFO L78 Accepts]: Start accepts. Automaton has 119234 states and 126576 transitions. Word has length 478 [2022-01-10 00:11:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:55,096 INFO L470 AbstractCegarLoop]: Abstraction has 119234 states and 126576 transitions. [2022-01-10 00:11:55,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 119234 states and 126576 transitions. [2022-01-10 00:11:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-01-10 00:11:55,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:55,105 INFO L514 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:11:55,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:11:55,105 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1234836487, now seen corresponding path program 1 times [2022-01-10 00:11:55,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:55,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424121998] [2022-01-10 00:11:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:55,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 343 proven. 100 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-01-10 00:11:55,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424121998] [2022-01-10 00:11:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424121998] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:11:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825154999] [2022-01-10 00:11:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:55,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:11:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:11:55,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:11:55,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:11:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:55,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 00:11:55,557 INFO L286 TraceCheckSpWp]: Computing forward predicates...