/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/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:25:32,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:25:32,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:25:32,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:25:32,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:25:32,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:25:32,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:25:32,438 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 01:25:32,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:25:32,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:25:32,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:25:32,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:25:32,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:25:32,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:25:32,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:25:32,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:25:32,467 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:25:32,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:25:32,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:25:32,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:25:32,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:25:32,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:25:32,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:25:32,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:25:32,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:25:32,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:25:32,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:25:32,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:25:32,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:25:32,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:25:32,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:25:32,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:25:32,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:25:32,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:25:32,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:25:32,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:25:32,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:25:32,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:25:32,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:25:32,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:25:32,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:25:32,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:25:32,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:25:32,666 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:25:32,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 01:25:32,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea78872a/5e1699b8b38e4123bc9255b65c5b667f/FLAGc36c8298e [2022-01-10 01:25:33,174 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:25:33,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 01:25:33,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea78872a/5e1699b8b38e4123bc9255b65c5b667f/FLAGc36c8298e [2022-01-10 01:25:33,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea78872a/5e1699b8b38e4123bc9255b65c5b667f [2022-01-10 01:25:33,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:25:33,714 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:25:33,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:25:33,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:25:33,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:25:33,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322afcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:33, skipping insertion in model container [2022-01-10 01:25:33,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:25:33" (1/1) ... [2022-01-10 01:25:33,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:25:33,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:25:34,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2022-01-10 01:25:34,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:25:34,118 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:25:34,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2022-01-10 01:25:34,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:25:34,193 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:25:34,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34 WrapperNode [2022-01-10 01:25:34,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:25:34,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:25:34,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:25:34,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:25:34,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,262 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1261 [2022-01-10 01:25:34,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:25:34,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:25:34,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:25:34,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:25:34,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:25:34,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:25:34,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:25:34,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:25:34,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (1/1) ... [2022-01-10 01:25:34,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:25:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:25:34,364 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 01:25:34,401 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 01:25:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:25:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:25:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:25:34,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:25:34,507 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:25:34,508 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:25:35,260 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:25:35,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:25:35,267 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:25:35,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:25:35 BoogieIcfgContainer [2022-01-10 01:25:35,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:25:35,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:25:35,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:25:35,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:25:35,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:25:33" (1/3) ... [2022-01-10 01:25:35,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cff25e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:25:35, skipping insertion in model container [2022-01-10 01:25:35,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:34" (2/3) ... [2022-01-10 01:25:35,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cff25e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:25:35, skipping insertion in model container [2022-01-10 01:25:35,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:25:35" (3/3) ... [2022-01-10 01:25:35,275 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 01:25:35,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:25:35,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:25:35,309 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:25:35,314 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 01:25:35,314 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:25:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 312 states have (on average 1.7884615384615385) internal successors, (558), 313 states have internal predecessors, (558), 0 states have call successors, (0), 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 01:25:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 01:25:35,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:35,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:35,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:35,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1531985210, now seen corresponding path program 1 times [2022-01-10 01:25:35,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:35,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949483493] [2022-01-10 01:25:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:35,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:35,600 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 01:25:35,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:35,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949483493] [2022-01-10 01:25:35,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949483493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:35,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:35,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:35,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205583072] [2022-01-10 01:25:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:35,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:35,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:35,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:35,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:35,625 INFO L87 Difference]: Start difference. First operand has 314 states, 312 states have (on average 1.7884615384615385) internal successors, (558), 313 states have internal predecessors, (558), 0 states have call successors, (0), 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 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 01:25:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:35,703 INFO L93 Difference]: Finished difference Result 577 states and 997 transitions. [2022-01-10 01:25:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:35,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 01:25:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:35,714 INFO L225 Difference]: With dead ends: 577 [2022-01-10 01:25:35,714 INFO L226 Difference]: Without dead ends: 434 [2022-01-10 01:25:35,717 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 01:25:35,719 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 220 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:35,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1050 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-10 01:25:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2022-01-10 01:25:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6790697674418604) internal successors, (722), 430 states have internal predecessors, (722), 0 states have call successors, (0), 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 01:25:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 722 transitions. [2022-01-10 01:25:35,819 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 722 transitions. Word has length 98 [2022-01-10 01:25:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:35,820 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 722 transitions. [2022-01-10 01:25:35,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 01:25:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 722 transitions. [2022-01-10 01:25:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:25:35,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:35,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:35,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:25:35,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 900005057, now seen corresponding path program 1 times [2022-01-10 01:25:35,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:35,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862346627] [2022-01-10 01:25:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:35,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:35,942 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 01:25:35,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:35,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862346627] [2022-01-10 01:25:35,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862346627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:35,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:35,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:35,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094437027] [2022-01-10 01:25:35,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:35,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:35,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:35,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:35,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:35,944 INFO L87 Difference]: Start difference. First operand 431 states and 722 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 01:25:36,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:36,035 INFO L93 Difference]: Finished difference Result 921 states and 1538 transitions. [2022-01-10 01:25:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:36,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-01-10 01:25:36,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:36,039 INFO L225 Difference]: With dead ends: 921 [2022-01-10 01:25:36,039 INFO L226 Difference]: Without dead ends: 667 [2022-01-10 01:25:36,040 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 01:25:36,041 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 200 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:36,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1016 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-10 01:25:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 663. [2022-01-10 01:25:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.6706948640483383) internal successors, (1106), 662 states have internal predecessors, (1106), 0 states have call successors, (0), 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 01:25:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1106 transitions. [2022-01-10 01:25:36,094 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1106 transitions. Word has length 101 [2022-01-10 01:25:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:36,095 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 1106 transitions. [2022-01-10 01:25:36,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 01:25:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1106 transitions. [2022-01-10 01:25:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 01:25:36,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:36,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:36,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:25:36,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2056367170, now seen corresponding path program 1 times [2022-01-10 01:25:36,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:36,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933001651] [2022-01-10 01:25:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:36,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:36,173 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 01:25:36,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:36,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933001651] [2022-01-10 01:25:36,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933001651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:36,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:36,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:36,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404667573] [2022-01-10 01:25:36,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:36,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:36,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:36,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:36,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:36,175 INFO L87 Difference]: Start difference. First operand 663 states and 1106 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:25:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:36,242 INFO L93 Difference]: Finished difference Result 1599 states and 2656 transitions. [2022-01-10 01:25:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:36,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 01:25:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:36,246 INFO L225 Difference]: With dead ends: 1599 [2022-01-10 01:25:36,246 INFO L226 Difference]: Without dead ends: 1113 [2022-01-10 01:25:36,247 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 01:25:36,248 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 194 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:36,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1017 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-01-10 01:25:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1107. [2022-01-10 01:25:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 1.6582278481012658) internal successors, (1834), 1106 states have internal predecessors, (1834), 0 states have call successors, (0), 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 01:25:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1834 transitions. [2022-01-10 01:25:36,306 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1834 transitions. Word has length 104 [2022-01-10 01:25:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:36,307 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1834 transitions. [2022-01-10 01:25:36,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:25:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1834 transitions. [2022-01-10 01:25:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 01:25:36,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:36,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:36,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:25:36,312 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:36,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1532440003, now seen corresponding path program 1 times [2022-01-10 01:25:36,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:36,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565126521] [2022-01-10 01:25:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:36,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:36,386 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 01:25:36,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:36,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565126521] [2022-01-10 01:25:36,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565126521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:36,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:36,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:36,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327292799] [2022-01-10 01:25:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:36,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:36,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:36,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:36,388 INFO L87 Difference]: Start difference. First operand 1107 states and 1834 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:25:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:36,513 INFO L93 Difference]: Finished difference Result 2895 states and 4772 transitions. [2022-01-10 01:25:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:36,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-01-10 01:25:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:36,519 INFO L225 Difference]: With dead ends: 2895 [2022-01-10 01:25:36,519 INFO L226 Difference]: Without dead ends: 1965 [2022-01-10 01:25:36,521 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 01:25:36,527 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 188 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:36,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 1018 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2022-01-10 01:25:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1955. [2022-01-10 01:25:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1954 states have (on average 1.6427840327533265) internal successors, (3210), 1954 states have internal predecessors, (3210), 0 states have call successors, (0), 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 01:25:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3210 transitions. [2022-01-10 01:25:36,627 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3210 transitions. Word has length 107 [2022-01-10 01:25:36,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:36,628 INFO L470 AbstractCegarLoop]: Abstraction has 1955 states and 3210 transitions. [2022-01-10 01:25:36,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:25:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3210 transitions. [2022-01-10 01:25:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 01:25:36,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:36,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:25:36,630 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:36,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:36,632 INFO L85 PathProgramCache]: Analyzing trace with hash 911548994, now seen corresponding path program 1 times [2022-01-10 01:25:36,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:36,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186435776] [2022-01-10 01:25:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:36,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:36,758 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 01:25:36,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:36,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186435776] [2022-01-10 01:25:36,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186435776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:36,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:36,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:25:36,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586293527] [2022-01-10 01:25:36,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:36,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:25:36,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:25:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:25:36,760 INFO L87 Difference]: Start difference. First operand 1955 states and 3210 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 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 01:25:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:37,391 INFO L93 Difference]: Finished difference Result 10211 states and 16886 transitions. [2022-01-10 01:25:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:25:37,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 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 01:25:37,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:37,415 INFO L225 Difference]: With dead ends: 10211 [2022-01-10 01:25:37,415 INFO L226 Difference]: Without dead ends: 8433 [2022-01-10 01:25:37,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:25:37,419 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 1873 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:37,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 4343 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:37,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2022-01-10 01:25:37,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 3613. [2022-01-10 01:25:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 1.6403654485049834) internal successors, (5925), 3612 states have internal predecessors, (5925), 0 states have call successors, (0), 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 01:25:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 5925 transitions. [2022-01-10 01:25:37,683 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 5925 transitions. Word has length 110 [2022-01-10 01:25:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:37,684 INFO L470 AbstractCegarLoop]: Abstraction has 3613 states and 5925 transitions. [2022-01-10 01:25:37,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 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 01:25:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 5925 transitions. [2022-01-10 01:25:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 01:25:37,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:37,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:37,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:25:37,686 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1873814308, now seen corresponding path program 1 times [2022-01-10 01:25:37,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:37,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123827087] [2022-01-10 01:25:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:37,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:37,735 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 01:25:37,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:37,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123827087] [2022-01-10 01:25:37,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123827087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:37,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:37,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:37,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469246658] [2022-01-10 01:25:37,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:37,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:37,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:37,737 INFO L87 Difference]: Start difference. First operand 3613 states and 5925 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 01:25:38,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:38,239 INFO L93 Difference]: Finished difference Result 10593 states and 17463 transitions. [2022-01-10 01:25:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:38,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 01:25:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:38,260 INFO L225 Difference]: With dead ends: 10593 [2022-01-10 01:25:38,260 INFO L226 Difference]: Without dead ends: 7157 [2022-01-10 01:25:38,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:38,266 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 658 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:38,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 1569 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2022-01-10 01:25:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 5368. [2022-01-10 01:25:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5367 states have (on average 1.6431898639836036) internal successors, (8819), 5367 states have internal predecessors, (8819), 0 states have call successors, (0), 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 01:25:38,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 8819 transitions. [2022-01-10 01:25:38,617 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 8819 transitions. Word has length 111 [2022-01-10 01:25:38,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:38,618 INFO L470 AbstractCegarLoop]: Abstraction has 5368 states and 8819 transitions. [2022-01-10 01:25:38,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 01:25:38,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 8819 transitions. [2022-01-10 01:25:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:25:38,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:38,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:38,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:25:38,621 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:38,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1978794569, now seen corresponding path program 1 times [2022-01-10 01:25:38,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:38,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822566996] [2022-01-10 01:25:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:38,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:38,670 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 01:25:38,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822566996] [2022-01-10 01:25:38,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822566996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:38,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:38,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:38,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850332650] [2022-01-10 01:25:38,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:38,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:38,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:38,672 INFO L87 Difference]: Start difference. First operand 5368 states and 8819 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:25:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:39,307 INFO L93 Difference]: Finished difference Result 15765 states and 25969 transitions. [2022-01-10 01:25:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:39,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-01-10 01:25:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:39,334 INFO L225 Difference]: With dead ends: 15765 [2022-01-10 01:25:39,335 INFO L226 Difference]: Without dead ends: 10574 [2022-01-10 01:25:39,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:39,342 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 656 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:39,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1737 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2022-01-10 01:25:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 7947. [2022-01-10 01:25:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 7946 states have (on average 1.641580669519255) internal successors, (13044), 7946 states have internal predecessors, (13044), 0 states have call successors, (0), 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 01:25:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 13044 transitions. [2022-01-10 01:25:39,886 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 13044 transitions. Word has length 112 [2022-01-10 01:25:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:39,886 INFO L470 AbstractCegarLoop]: Abstraction has 7947 states and 13044 transitions. [2022-01-10 01:25:39,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:25:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 13044 transitions. [2022-01-10 01:25:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 01:25:39,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:39,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:39,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:25:39,890 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2111780172, now seen corresponding path program 1 times [2022-01-10 01:25:39,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:39,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684049862] [2022-01-10 01:25:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:39,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:39,929 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 01:25:39,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:39,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684049862] [2022-01-10 01:25:39,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684049862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:39,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:39,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:39,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315454244] [2022-01-10 01:25:39,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:39,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:39,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:39,931 INFO L87 Difference]: Start difference. First operand 7947 states and 13044 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:40,586 INFO L93 Difference]: Finished difference Result 17498 states and 28779 transitions. [2022-01-10 01:25:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:40,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 01:25:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:40,607 INFO L225 Difference]: With dead ends: 17498 [2022-01-10 01:25:40,608 INFO L226 Difference]: Without dead ends: 12105 [2022-01-10 01:25:40,615 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 01:25:40,615 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 199 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:40,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 1141 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12105 states. [2022-01-10 01:25:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12105 to 12103. [2022-01-10 01:25:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12103 states, 12102 states have (on average 1.6384068748967113) internal successors, (19828), 12102 states have internal predecessors, (19828), 0 states have call successors, (0), 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 01:25:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12103 states to 12103 states and 19828 transitions. [2022-01-10 01:25:41,520 INFO L78 Accepts]: Start accepts. Automaton has 12103 states and 19828 transitions. Word has length 113 [2022-01-10 01:25:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:41,520 INFO L470 AbstractCegarLoop]: Abstraction has 12103 states and 19828 transitions. [2022-01-10 01:25:41,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 12103 states and 19828 transitions. [2022-01-10 01:25:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 01:25:41,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:41,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:41,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:25:41,522 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1571535332, now seen corresponding path program 1 times [2022-01-10 01:25:41,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:41,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538524983] [2022-01-10 01:25:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:41,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:41,578 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 01:25:41,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:41,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538524983] [2022-01-10 01:25:41,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538524983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:41,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:41,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:41,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288835309] [2022-01-10 01:25:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:41,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:41,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:41,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:41,580 INFO L87 Difference]: Start difference. First operand 12103 states and 19828 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:42,493 INFO L93 Difference]: Finished difference Result 23535 states and 38662 transitions. [2022-01-10 01:25:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 01:25:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:42,530 INFO L225 Difference]: With dead ends: 23535 [2022-01-10 01:25:42,530 INFO L226 Difference]: Without dead ends: 17013 [2022-01-10 01:25:42,549 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 01:25:42,551 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 193 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:42,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1116 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:42,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17013 states. [2022-01-10 01:25:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17013 to 17011. [2022-01-10 01:25:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17011 states, 17010 states have (on average 1.6357436801881247) internal successors, (27824), 17010 states have internal predecessors, (27824), 0 states have call successors, (0), 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 01:25:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17011 states to 17011 states and 27824 transitions. [2022-01-10 01:25:43,697 INFO L78 Accepts]: Start accepts. Automaton has 17011 states and 27824 transitions. Word has length 113 [2022-01-10 01:25:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:43,697 INFO L470 AbstractCegarLoop]: Abstraction has 17011 states and 27824 transitions. [2022-01-10 01:25:43,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 17011 states and 27824 transitions. [2022-01-10 01:25:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 01:25:43,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:43,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:43,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:25:43,700 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:43,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1155143491, now seen corresponding path program 1 times [2022-01-10 01:25:43,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:43,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760707703] [2022-01-10 01:25:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:43,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:43,761 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 01:25:43,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:43,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760707703] [2022-01-10 01:25:43,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760707703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:43,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:43,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:43,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555309323] [2022-01-10 01:25:43,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:43,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:43,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:43,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:43,763 INFO L87 Difference]: Start difference. First operand 17011 states and 27824 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:46,193 INFO L93 Difference]: Finished difference Result 54370 states and 89164 transitions. [2022-01-10 01:25:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:46,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 01:25:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:46,258 INFO L225 Difference]: With dead ends: 54370 [2022-01-10 01:25:46,259 INFO L226 Difference]: Without dead ends: 37643 [2022-01-10 01:25:46,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:46,281 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 654 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:46,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 1514 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37643 states. [2022-01-10 01:25:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37643 to 27271. [2022-01-10 01:25:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27271 states, 27270 states have (on average 1.6332966629996333) internal successors, (44540), 27270 states have internal predecessors, (44540), 0 states have call successors, (0), 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 01:25:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27271 states to 27271 states and 44540 transitions. [2022-01-10 01:25:48,037 INFO L78 Accepts]: Start accepts. Automaton has 27271 states and 44540 transitions. Word has length 113 [2022-01-10 01:25:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:48,037 INFO L470 AbstractCegarLoop]: Abstraction has 27271 states and 44540 transitions. [2022-01-10 01:25:48,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 27271 states and 44540 transitions. [2022-01-10 01:25:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 01:25:48,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:48,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:48,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:25:48,039 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:48,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1280489340, now seen corresponding path program 1 times [2022-01-10 01:25:48,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:48,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454462423] [2022-01-10 01:25:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:48,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:48,073 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 01:25:48,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:48,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454462423] [2022-01-10 01:25:48,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454462423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:48,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:48,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:48,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533222626] [2022-01-10 01:25:48,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:48,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:48,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:48,075 INFO L87 Difference]: Start difference. First operand 27271 states and 44540 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:50,790 INFO L93 Difference]: Finished difference Result 53211 states and 87188 transitions. [2022-01-10 01:25:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:50,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 01:25:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:50,927 INFO L225 Difference]: With dead ends: 53211 [2022-01-10 01:25:50,928 INFO L226 Difference]: Without dead ends: 38175 [2022-01-10 01:25:50,955 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 01:25:50,956 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 187 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:50,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1090 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38175 states. [2022-01-10 01:25:53,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38175 to 38173. [2022-01-10 01:25:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38173 states, 38172 states have (on average 1.6304621188305564) internal successors, (62238), 38172 states have internal predecessors, (62238), 0 states have call successors, (0), 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 01:25:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38173 states to 38173 states and 62238 transitions. [2022-01-10 01:25:53,587 INFO L78 Accepts]: Start accepts. Automaton has 38173 states and 62238 transitions. Word has length 113 [2022-01-10 01:25:53,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:53,587 INFO L470 AbstractCegarLoop]: Abstraction has 38173 states and 62238 transitions. [2022-01-10 01:25:53,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 38173 states and 62238 transitions. [2022-01-10 01:25:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 01:25:53,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:53,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:53,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:25:53,590 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash 760927820, now seen corresponding path program 1 times [2022-01-10 01:25:53,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:53,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122943698] [2022-01-10 01:25:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:53,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:53,627 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 01:25:53,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:53,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122943698] [2022-01-10 01:25:53,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122943698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:53,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:53,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:53,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713723953] [2022-01-10 01:25:53,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:53,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:53,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:53,628 INFO L87 Difference]: Start difference. First operand 38173 states and 62238 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:25:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:57,734 INFO L93 Difference]: Finished difference Result 83680 states and 137527 transitions. [2022-01-10 01:25:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:57,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 01:25:57,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:57,843 INFO L225 Difference]: With dead ends: 83680 [2022-01-10 01:25:57,844 INFO L226 Difference]: Without dead ends: 56799 [2022-01-10 01:25:57,874 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 01:25:57,875 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 205 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:57,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1179 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56799 states. [2022-01-10 01:26:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56799 to 56797. [2022-01-10 01:26:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56797 states, 56796 states have (on average 1.6322628354109445) internal successors, (92706), 56796 states have internal predecessors, (92706), 0 states have call successors, (0), 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 01:26:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56797 states to 56797 states and 92706 transitions. [2022-01-10 01:26:01,981 INFO L78 Accepts]: Start accepts. Automaton has 56797 states and 92706 transitions. Word has length 113 [2022-01-10 01:26:01,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:26:01,981 INFO L470 AbstractCegarLoop]: Abstraction has 56797 states and 92706 transitions. [2022-01-10 01:26:01,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 01:26:01,982 INFO L276 IsEmpty]: Start isEmpty. Operand 56797 states and 92706 transitions. [2022-01-10 01:26:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 01:26:01,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:26:01,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:01,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:26:01,983 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:26:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:26:01,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1396321872, now seen corresponding path program 1 times [2022-01-10 01:26:01,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:26:01,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157737865] [2022-01-10 01:26:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:26:01,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:26:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:26:02,032 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 01:26:02,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:26:02,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157737865] [2022-01-10 01:26:02,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157737865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:26:02,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:26:02,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:26:02,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519183490] [2022-01-10 01:26:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:26:02,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:26:02,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:26:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:26:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:26:02,033 INFO L87 Difference]: Start difference. First operand 56797 states and 92706 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:26:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:26:11,028 INFO L93 Difference]: Finished difference Result 182050 states and 297971 transitions. [2022-01-10 01:26:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:26:11,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 01:26:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:26:11,391 INFO L225 Difference]: With dead ends: 182050 [2022-01-10 01:26:11,391 INFO L226 Difference]: Without dead ends: 125485 [2022-01-10 01:26:11,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:26:11,482 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 652 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:26:11,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 1713 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:26:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125485 states. [2022-01-10 01:26:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125485 to 90916. [2022-01-10 01:26:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90916 states, 90915 states have (on average 1.6285431446955947) internal successors, (148059), 90915 states have internal predecessors, (148059), 0 states have call successors, (0), 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 01:26:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90916 states to 90916 states and 148059 transitions. [2022-01-10 01:26:18,820 INFO L78 Accepts]: Start accepts. Automaton has 90916 states and 148059 transitions. Word has length 114 [2022-01-10 01:26:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:26:18,820 INFO L470 AbstractCegarLoop]: Abstraction has 90916 states and 148059 transitions. [2022-01-10 01:26:18,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:26:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 90916 states and 148059 transitions. [2022-01-10 01:26:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 01:26:18,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:26:18,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:18,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:26:18,821 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:26:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:26:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash 318216513, now seen corresponding path program 1 times [2022-01-10 01:26:18,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:26:18,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120639320] [2022-01-10 01:26:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:26:18,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:26:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:26:18,956 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 01:26:18,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:26:18,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120639320] [2022-01-10 01:26:18,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120639320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:26:18,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:26:18,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:26:18,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605347546] [2022-01-10 01:26:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:26:18,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:26:18,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:26:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:26:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:26:18,958 INFO L87 Difference]: Start difference. First operand 90916 states and 148059 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 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 01:26:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:26:26,760 INFO L93 Difference]: Finished difference Result 181602 states and 295740 transitions. [2022-01-10 01:26:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:26:26,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 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 01:26:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:26:26,925 INFO L225 Difference]: With dead ends: 181602 [2022-01-10 01:26:26,926 INFO L226 Difference]: Without dead ends: 90918 [2022-01-10 01:26:26,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:26:26,997 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 504 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:26:26,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 1992 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:26:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90918 states. [2022-01-10 01:26:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90918 to 90916. [2022-01-10 01:26:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90916 states, 90915 states have (on average 1.6216685915415499) internal successors, (147434), 90915 states have internal predecessors, (147434), 0 states have call successors, (0), 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 01:26:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90916 states to 90916 states and 147434 transitions. [2022-01-10 01:26:34,522 INFO L78 Accepts]: Start accepts. Automaton has 90916 states and 147434 transitions. Word has length 116 [2022-01-10 01:26:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:26:34,524 INFO L470 AbstractCegarLoop]: Abstraction has 90916 states and 147434 transitions. [2022-01-10 01:26:34,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 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 01:26:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 90916 states and 147434 transitions. [2022-01-10 01:26:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 01:26:34,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:26:34,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:34,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:26:34,526 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:26:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:26:34,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1053071851, now seen corresponding path program 1 times [2022-01-10 01:26:34,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:26:34,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547421077] [2022-01-10 01:26:34,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:26:34,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:26:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:26:34,624 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 01:26:34,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:26:34,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547421077] [2022-01-10 01:26:34,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547421077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:26:34,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:26:34,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:26:34,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440475440] [2022-01-10 01:26:34,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:26:34,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:26:34,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:26:34,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:26:34,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:26:34,625 INFO L87 Difference]: Start difference. First operand 90916 states and 147434 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)