/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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:10:06,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:10:06,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:10:06,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:10:06,434 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 00:10:06,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:10:06,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:10:06,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:10:06,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:10:06,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:10:06,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:10:06,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:10:06,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:10:06,453 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:10:06,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:10:06,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:10:06,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:10:06,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:10:06,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:10:06,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:10:06,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:10:06,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:10:06,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:10:06,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:10:06,455 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:10:06,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:10:06,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:10:06,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:10:06,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:10:06,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:10:06,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:10:06,687 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:10:06,687 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:10:06,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2022-01-10 00:10:06,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fab437df/411275ef8441430ba3641110aa961dde/FLAGed3581e2a [2022-01-10 00:10:07,355 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:10:07,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2022-01-10 00:10:07,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fab437df/411275ef8441430ba3641110aa961dde/FLAGed3581e2a [2022-01-10 00:10:07,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fab437df/411275ef8441430ba3641110aa961dde [2022-01-10 00:10:07,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:10:07,734 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:10:07,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:10:07,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:10:07,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:10:07,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:07" (1/1) ... [2022-01-10 00:10:07,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1974130d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:07, skipping insertion in model container [2022-01-10 00:10:07,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:07" (1/1) ... [2022-01-10 00:10:07,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:10:07,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:10:08,025 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_label27.c[6468,6481] [2022-01-10 00:10:08,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:10:08,612 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:10:08,637 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_label27.c[6468,6481] [2022-01-10 00:10:09,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:10:09,141 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:10:09,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09 WrapperNode [2022-01-10 00:10:09,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:10:09,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:10:09,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:10:09,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:10:09,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:09,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:09,611 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-01-10 00:10:09,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:10:09,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:10:09,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:10:09,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:10:09,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:09,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:09,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:09,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:09,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:09,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:10,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:10,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:10:10,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:10:10,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:10:10,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:10:10,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (1/1) ... [2022-01-10 00:10:10,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:10:10,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:10:10,286 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 00:10:10,288 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 00:10:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:10:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:10:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:10:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:10:10,453 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:10:10,455 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:10:14,102 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:10:14,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:10:14,114 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:10:14,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:14 BoogieIcfgContainer [2022-01-10 00:10:14,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:10:14,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:10:14,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:10:14,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:10:14,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:10:07" (1/3) ... [2022-01-10 00:10:14,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31daa0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:10:14, skipping insertion in model container [2022-01-10 00:10:14,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:09" (2/3) ... [2022-01-10 00:10:14,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31daa0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:10:14, skipping insertion in model container [2022-01-10 00:10:14,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:14" (3/3) ... [2022-01-10 00:10:14,123 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label27.c [2022-01-10 00:10:14,126 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:10:14,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:10:14,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:10:14,166 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 00:10:14,166 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:10:14,232 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 00:10:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 00:10:14,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:14,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:10:14,238 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:14,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:14,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2068820151, now seen corresponding path program 1 times [2022-01-10 00:10:14,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:14,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866199607] [2022-01-10 00:10:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:14,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:14,467 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 00:10:14,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:14,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866199607] [2022-01-10 00:10:14,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866199607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:14,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:14,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:14,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185493769] [2022-01-10 00:10:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:14,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:14,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:14,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:14,499 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 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:10:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:18,219 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2022-01-10 00:10:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:18,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 00:10:18,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:18,243 INFO L225 Difference]: With dead ends: 3160 [2022-01-10 00:10:18,243 INFO L226 Difference]: Without dead ends: 1983 [2022-01-10 00:10:18,252 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 00:10:18,255 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1058 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:18,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-10 00:10:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-01-10 00:10:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2022-01-10 00:10:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 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 00:10:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2022-01-10 00:10:18,352 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 45 [2022-01-10 00:10:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:18,352 INFO L470 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2022-01-10 00:10:18,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 00:10:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2022-01-10 00:10:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 00:10:18,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:18,359 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 00:10:18,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:10:18,360 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash 331802818, now seen corresponding path program 1 times [2022-01-10 00:10:18,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208760475] [2022-01-10 00:10:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:18,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:18,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:18,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208760475] [2022-01-10 00:10:18,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208760475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:18,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:18,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:18,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222204210] [2022-01-10 00:10:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:18,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:18,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:18,477 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:21,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:21,042 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2022-01-10 00:10:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:21,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 00:10:21,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:21,054 INFO L225 Difference]: With dead ends: 5456 [2022-01-10 00:10:21,054 INFO L226 Difference]: Without dead ends: 3528 [2022-01-10 00:10:21,060 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 00:10:21,061 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:21,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:10:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-01-10 00:10:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-01-10 00:10:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2022-01-10 00:10:21,123 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 110 [2022-01-10 00:10:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:21,126 INFO L470 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2022-01-10 00:10:21,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2022-01-10 00:10:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 00:10:21,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:21,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:10:21,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:10:21,129 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:21,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:21,130 INFO L85 PathProgramCache]: Analyzing trace with hash -748334831, now seen corresponding path program 1 times [2022-01-10 00:10:21,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:21,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162858920] [2022-01-10 00:10:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:21,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:21,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:21,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162858920] [2022-01-10 00:10:21,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162858920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:21,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:21,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:21,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234971737] [2022-01-10 00:10:21,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:21,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:21,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:21,301 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:24,046 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2022-01-10 00:10:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:24,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-10 00:10:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:24,079 INFO L225 Difference]: With dead ends: 10232 [2022-01-10 00:10:24,079 INFO L226 Difference]: Without dead ends: 6708 [2022-01-10 00:10:24,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:24,103 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:24,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 00:10:24,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2022-01-10 00:10:24,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2022-01-10 00:10:24,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2022-01-10 00:10:24,201 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 116 [2022-01-10 00:10:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:24,203 INFO L470 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2022-01-10 00:10:24,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2022-01-10 00:10:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 00:10:24,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:24,209 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:10:24,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:10:24,209 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1036466844, now seen corresponding path program 1 times [2022-01-10 00:10:24,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:24,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661041129] [2022-01-10 00:10:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:24,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:24,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661041129] [2022-01-10 00:10:24,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661041129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:24,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:24,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:24,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628937519] [2022-01-10 00:10:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:24,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:24,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:24,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:24,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:24,309 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 00:10:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:27,703 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2022-01-10 00:10:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:27,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-10 00:10:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:27,731 INFO L225 Difference]: With dead ends: 17443 [2022-01-10 00:10:27,731 INFO L226 Difference]: Without dead ends: 10745 [2022-01-10 00:10:27,740 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 00:10:27,741 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:27,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 00:10:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2022-01-10 00:10:27,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2022-01-10 00:10:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 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 00:10:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2022-01-10 00:10:27,885 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 146 [2022-01-10 00:10:27,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:27,886 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2022-01-10 00:10:27,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 00:10:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2022-01-10 00:10:27,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 00:10:27,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:27,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:27,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:10:27,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:27,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1555116277, now seen corresponding path program 1 times [2022-01-10 00:10:27,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:27,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479194789] [2022-01-10 00:10:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:27,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:28,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:28,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479194789] [2022-01-10 00:10:28,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479194789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:28,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:28,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:28,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595056677] [2022-01-10 00:10:28,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:28,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:28,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:28,007 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 00:10:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:30,616 INFO L93 Difference]: Finished difference Result 20549 states and 28119 transitions. [2022-01-10 00:10:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:30,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2022-01-10 00:10:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:30,639 INFO L225 Difference]: With dead ends: 20549 [2022-01-10 00:10:30,639 INFO L226 Difference]: Without dead ends: 10669 [2022-01-10 00:10:30,646 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 00:10:30,647 INFO L933 BasicCegarLoop]: 1083 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:30,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1212 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:10:30,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2022-01-10 00:10:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10669. [2022-01-10 00:10:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3539557555305586) internal successors, (14444), 10668 states have internal predecessors, (14444), 0 states have call successors, (0), 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 00:10:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14444 transitions. [2022-01-10 00:10:30,760 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14444 transitions. Word has length 156 [2022-01-10 00:10:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:30,760 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 14444 transitions. [2022-01-10 00:10:30,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 00:10:30,760 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14444 transitions. [2022-01-10 00:10:30,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-10 00:10:30,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:30,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:30,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:10:30,762 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:30,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1267295969, now seen corresponding path program 1 times [2022-01-10 00:10:30,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:30,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226205368] [2022-01-10 00:10:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:30,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:30,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:30,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226205368] [2022-01-10 00:10:30,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226205368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:30,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:30,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:30,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802272817] [2022-01-10 00:10:30,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:30,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:30,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:30,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:30,830 INFO L87 Difference]: Start difference. First operand 10669 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 00:10:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:33,734 INFO L93 Difference]: Finished difference Result 29991 states and 41155 transitions. [2022-01-10 00:10:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2022-01-10 00:10:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:33,764 INFO L225 Difference]: With dead ends: 29991 [2022-01-10 00:10:33,764 INFO L226 Difference]: Without dead ends: 20111 [2022-01-10 00:10:33,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:33,778 INFO L933 BasicCegarLoop]: 1849 mSDtfsCounter, 892 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:33,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1988 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:10:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20111 states. [2022-01-10 00:10:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20111 to 19314. [2022-01-10 00:10:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19314 states, 19313 states have (on average 1.2808470978097655) internal successors, (24737), 19313 states have internal predecessors, (24737), 0 states have call successors, (0), 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 00:10:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19314 states to 19314 states and 24737 transitions. [2022-01-10 00:10:33,993 INFO L78 Accepts]: Start accepts. Automaton has 19314 states and 24737 transitions. Word has length 170 [2022-01-10 00:10:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:33,993 INFO L470 AbstractCegarLoop]: Abstraction has 19314 states and 24737 transitions. [2022-01-10 00:10:33,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 00:10:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 19314 states and 24737 transitions. [2022-01-10 00:10:34,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-01-10 00:10:34,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:34,086 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:10:34,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:10:34,086 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:34,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1650019074, now seen corresponding path program 1 times [2022-01-10 00:10:34,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:34,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736518206] [2022-01-10 00:10:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:34,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-10 00:10:34,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:34,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736518206] [2022-01-10 00:10:34,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736518206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:34,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:34,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:10:34,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126801974] [2022-01-10 00:10:34,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:34,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:34,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:34,192 INFO L87 Difference]: Start difference. First operand 19314 states and 24737 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 00:10:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:37,165 INFO L93 Difference]: Finished difference Result 44942 states and 56955 transitions. [2022-01-10 00:10:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:37,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 257 [2022-01-10 00:10:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:37,203 INFO L225 Difference]: With dead ends: 44942 [2022-01-10 00:10:37,203 INFO L226 Difference]: Without dead ends: 25630 [2022-01-10 00:10:37,221 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 00:10:37,222 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 726 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:37,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 1191 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:10:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25630 states. [2022-01-10 00:10:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25630 to 25622. [2022-01-10 00:10:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25622 states, 25621 states have (on average 1.2324655555989228) internal successors, (31577), 25621 states have internal predecessors, (31577), 0 states have call successors, (0), 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 00:10:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25622 states to 25622 states and 31577 transitions. [2022-01-10 00:10:37,473 INFO L78 Accepts]: Start accepts. Automaton has 25622 states and 31577 transitions. Word has length 257 [2022-01-10 00:10:37,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:37,474 INFO L470 AbstractCegarLoop]: Abstraction has 25622 states and 31577 transitions. [2022-01-10 00:10:37,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 00:10:37,474 INFO L276 IsEmpty]: Start isEmpty. Operand 25622 states and 31577 transitions. [2022-01-10 00:10:37,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-01-10 00:10:37,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:37,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:10:37,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:10:37,477 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1608424042, now seen corresponding path program 1 times [2022-01-10 00:10:37,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:37,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259994323] [2022-01-10 00:10:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:37,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:10:37,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:37,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259994323] [2022-01-10 00:10:37,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259994323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:37,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:37,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:37,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344191739] [2022-01-10 00:10:37,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:37,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:37,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:37,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:37,572 INFO L87 Difference]: Start difference. First operand 25622 states and 31577 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 00:10:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:40,550 INFO L93 Difference]: Finished difference Result 72509 states and 89961 transitions. [2022-01-10 00:10:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 272 [2022-01-10 00:10:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:40,601 INFO L225 Difference]: With dead ends: 72509 [2022-01-10 00:10:40,601 INFO L226 Difference]: Without dead ends: 47676 [2022-01-10 00:10:40,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:40,627 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 825 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:40,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 900 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:10:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47676 states. [2022-01-10 00:10:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47676 to 46091. [2022-01-10 00:10:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46091 states, 46090 states have (on average 1.1848557170752876) internal successors, (54610), 46090 states have internal predecessors, (54610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46091 states to 46091 states and 54610 transitions. [2022-01-10 00:10:41,227 INFO L78 Accepts]: Start accepts. Automaton has 46091 states and 54610 transitions. Word has length 272 [2022-01-10 00:10:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:41,228 INFO L470 AbstractCegarLoop]: Abstraction has 46091 states and 54610 transitions. [2022-01-10 00:10:41,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 46091 states and 54610 transitions. [2022-01-10 00:10:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-01-10 00:10:41,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:41,233 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:10:41,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:10:41,233 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:41,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:41,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1505061361, now seen corresponding path program 1 times [2022-01-10 00:10:41,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:41,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597522685] [2022-01-10 00:10:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:41,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 214 proven. 113 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 00:10:41,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:41,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597522685] [2022-01-10 00:10:41,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597522685] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:10:41,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937213512] [2022-01-10 00:10:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:41,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:10:41,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:10:41,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:10:41,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:10:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:41,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:10:41,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:10:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-01-10 00:10:42,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:10:42,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937213512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:42,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:10:42,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-01-10 00:10:42,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007561897] [2022-01-10 00:10:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:42,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:42,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:10:42,086 INFO L87 Difference]: Start difference. First operand 46091 states and 54610 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:44,536 INFO L93 Difference]: Finished difference Result 91382 states and 108416 transitions. [2022-01-10 00:10:44,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:44,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 351 [2022-01-10 00:10:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:44,587 INFO L225 Difference]: With dead ends: 91382 [2022-01-10 00:10:44,587 INFO L226 Difference]: Without dead ends: 46080 [2022-01-10 00:10:44,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:10:44,635 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1077 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:44,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 822 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:10:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46080 states. [2022-01-10 00:10:45,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46080 to 46077. [2022-01-10 00:10:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46077 states, 46076 states have (on average 1.1360578175188818) internal successors, (52345), 46076 states have internal predecessors, (52345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46077 states to 46077 states and 52345 transitions. [2022-01-10 00:10:45,424 INFO L78 Accepts]: Start accepts. Automaton has 46077 states and 52345 transitions. Word has length 351 [2022-01-10 00:10:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:45,425 INFO L470 AbstractCegarLoop]: Abstraction has 46077 states and 52345 transitions. [2022-01-10 00:10:45,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 46077 states and 52345 transitions. [2022-01-10 00:10:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-01-10 00:10:45,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:45,448 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:10:45,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:10:45,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:10:45,665 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -625904064, now seen corresponding path program 1 times [2022-01-10 00:10:45,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:45,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942950904] [2022-01-10 00:10:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:45,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 00:10:46,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:46,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942950904] [2022-01-10 00:10:46,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942950904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:46,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:46,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:46,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534393068] [2022-01-10 00:10:46,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:46,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:46,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:46,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:46,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:46,110 INFO L87 Difference]: Start difference. First operand 46077 states and 52345 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:48,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:48,781 INFO L93 Difference]: Finished difference Result 101586 states and 116820 transitions. [2022-01-10 00:10:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:10:48,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 360 [2022-01-10 00:10:48,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:49,022 INFO L225 Difference]: With dead ends: 101586 [2022-01-10 00:10:49,022 INFO L226 Difference]: Without dead ends: 56298 [2022-01-10 00:10:49,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:49,035 INFO L933 BasicCegarLoop]: 1440 mSDtfsCounter, 1110 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:49,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 1525 Invalid, 3160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:10:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56298 states. [2022-01-10 00:10:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56298 to 56297. [2022-01-10 00:10:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56297 states, 56296 states have (on average 1.1241651271848798) internal successors, (63286), 56296 states have internal predecessors, (63286), 0 states have call successors, (0), 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 00:10:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56297 states to 56297 states and 63286 transitions. [2022-01-10 00:10:49,706 INFO L78 Accepts]: Start accepts. Automaton has 56297 states and 63286 transitions. Word has length 360 [2022-01-10 00:10:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:49,707 INFO L470 AbstractCegarLoop]: Abstraction has 56297 states and 63286 transitions. [2022-01-10 00:10:49,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 00:10:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 56297 states and 63286 transitions. [2022-01-10 00:10:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-01-10 00:10:49,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:49,712 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 00:10:49,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:10:49,712 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash 271548370, now seen corresponding path program 1 times [2022-01-10 00:10:49,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:49,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31064670] [2022-01-10 00:10:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:49,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-01-10 00:10:49,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:49,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31064670] [2022-01-10 00:10:49,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31064670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:49,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:49,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:49,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2959055] [2022-01-10 00:10:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:49,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:10:49,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:10:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:10:49,809 INFO L87 Difference]: Start difference. First operand 56297 states and 63286 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:10:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:10:55,695 INFO L93 Difference]: Finished difference Result 141882 states and 159543 transitions. [2022-01-10 00:10:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:10:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 393 [2022-01-10 00:10:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:10:55,804 INFO L225 Difference]: With dead ends: 141882 [2022-01-10 00:10:55,805 INFO L226 Difference]: Without dead ends: 86374 [2022-01-10 00:10:55,837 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 00:10:55,838 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 1688 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5942 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 6928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 5942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:10:55,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1688 Valid, 864 Invalid, 6928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 5942 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-01-10 00:10:55,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86374 states. [2022-01-10 00:10:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86374 to 68114. [2022-01-10 00:10:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68114 states, 68113 states have (on average 1.1126069913232424) internal successors, (75783), 68113 states have internal predecessors, (75783), 0 states have call successors, (0), 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 00:10:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68114 states to 68114 states and 75783 transitions. [2022-01-10 00:10:56,779 INFO L78 Accepts]: Start accepts. Automaton has 68114 states and 75783 transitions. Word has length 393 [2022-01-10 00:10:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:10:56,780 INFO L470 AbstractCegarLoop]: Abstraction has 68114 states and 75783 transitions. [2022-01-10 00:10:56,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 00:10:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 68114 states and 75783 transitions. [2022-01-10 00:10:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-01-10 00:10:56,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:10:56,785 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:10:56,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:10:56,785 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:10:56,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:10:56,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1710275287, now seen corresponding path program 1 times [2022-01-10 00:10:56,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:10:56,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374682896] [2022-01-10 00:10:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:10:56,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:10:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:10:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-01-10 00:10:56,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:10:56,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374682896] [2022-01-10 00:10:56,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374682896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:56,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:10:56,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:10:56,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924195368] [2022-01-10 00:10:56,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:56,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:56,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:56,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:56,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:10:56,906 INFO L87 Difference]: Start difference. First operand 68114 states and 75783 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 00:11:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:00,178 INFO L93 Difference]: Finished difference Result 159833 states and 178094 transitions. [2022-01-10 00:11:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:00,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 406 [2022-01-10 00:11:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:00,280 INFO L225 Difference]: With dead ends: 159833 [2022-01-10 00:11:00,280 INFO L226 Difference]: Without dead ends: 92508 [2022-01-10 00:11:00,322 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 00:11:00,322 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 831 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:00,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 783 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:11:00,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92508 states. [2022-01-10 00:11:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92508 to 90920. [2022-01-10 00:11:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90920 states, 90919 states have (on average 1.0987142401478238) internal successors, (99894), 90919 states have internal predecessors, (99894), 0 states have call successors, (0), 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 00:11:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90920 states to 90920 states and 99894 transitions. [2022-01-10 00:11:01,577 INFO L78 Accepts]: Start accepts. Automaton has 90920 states and 99894 transitions. Word has length 406 [2022-01-10 00:11:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:01,578 INFO L470 AbstractCegarLoop]: Abstraction has 90920 states and 99894 transitions. [2022-01-10 00:11:01,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 00:11:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 90920 states and 99894 transitions. [2022-01-10 00:11:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-01-10 00:11:01,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:01,589 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:11:01,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:11:01,589 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:01,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash -408391344, now seen corresponding path program 1 times [2022-01-10 00:11:01,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:01,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156746372] [2022-01-10 00:11:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:01,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 365 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-01-10 00:11:01,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:01,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156746372] [2022-01-10 00:11:01,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156746372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:01,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:11:01,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:11:01,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725650406] [2022-01-10 00:11:01,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:01,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:01,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:11:01,833 INFO L87 Difference]: Start difference. First operand 90920 states and 99894 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:05,205 INFO L93 Difference]: Finished difference Result 204687 states and 224264 transitions. [2022-01-10 00:11:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:05,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 426 [2022-01-10 00:11:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:05,373 INFO L225 Difference]: With dead ends: 204687 [2022-01-10 00:11:05,373 INFO L226 Difference]: Without dead ends: 114556 [2022-01-10 00:11:05,416 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 00:11:05,418 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 796 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:05,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 1116 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:11:05,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114556 states. [2022-01-10 00:11:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114556 to 110599. [2022-01-10 00:11:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110599 states, 110598 states have (on average 1.088509737969945) internal successors, (120387), 110598 states have internal predecessors, (120387), 0 states have call successors, (0), 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 00:11:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110599 states to 110599 states and 120387 transitions. [2022-01-10 00:11:06,967 INFO L78 Accepts]: Start accepts. Automaton has 110599 states and 120387 transitions. Word has length 426 [2022-01-10 00:11:06,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:11:06,967 INFO L470 AbstractCegarLoop]: Abstraction has 110599 states and 120387 transitions. [2022-01-10 00:11:06,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:11:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 110599 states and 120387 transitions. [2022-01-10 00:11:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-01-10 00:11:06,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:11:06,981 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-01-10 00:11:06,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:11:06,982 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:11:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:11:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1634378536, now seen corresponding path program 1 times [2022-01-10 00:11:06,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:11:06,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140766937] [2022-01-10 00:11:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:06,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:11:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 383 proven. 113 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-01-10 00:11:07,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:11:07,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140766937] [2022-01-10 00:11:07,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140766937] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:11:07,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032354206] [2022-01-10 00:11:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:11:07,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:11:07,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:11:07,395 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 00:11:07,435 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 00:11:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:11:07,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 00:11:07,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:11:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-10 00:11:08,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:11:08,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032354206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:11:08,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:11:08,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-01-10 00:11:08,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016425196] [2022-01-10 00:11:08,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:11:08,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:11:08,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:11:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:11:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:11:08,822 INFO L87 Difference]: Start difference. First operand 110599 states and 120387 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 00:11:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:11:12,256 INFO L93 Difference]: Finished difference Result 210184 states and 229315 transitions. [2022-01-10 00:11:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:11:12,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 436 [2022-01-10 00:11:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:11:12,446 INFO L225 Difference]: With dead ends: 210184 [2022-01-10 00:11:12,446 INFO L226 Difference]: Without dead ends: 113757 [2022-01-10 00:11:12,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:11:12,505 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 682 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:11:12,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1150 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 00:11:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113757 states.