/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_Bitvector.epf -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:41:16,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:41:16,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:41:16,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 06:41:16,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:41:17,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:41:17,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:41:17,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:41:17,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:41:17,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:41:17,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:41:17,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:41:17,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:41:17,022 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:41:17,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:41:17,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:41:17,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:41:17,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:41:17,024 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:41:17,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:41:17,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:41:17,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:41:17,025 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:41:17,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:41:17,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:41:17,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:41:17,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:41:17,354 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:41:17,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c [2022-01-10 06:41:17,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406764b72/e66fc21c939546d4bde467cca9e91c6e/FLAGc2ac38c43 [2022-01-10 06:41:17,813 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:41:17,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c [2022-01-10 06:41:17,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406764b72/e66fc21c939546d4bde467cca9e91c6e/FLAGc2ac38c43 [2022-01-10 06:41:17,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406764b72/e66fc21c939546d4bde467cca9e91c6e [2022-01-10 06:41:17,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:41:17,847 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:41:17,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:41:17,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:41:17,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:41:17,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:41:17" (1/1) ... [2022-01-10 06:41:17,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad7a885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:17, skipping insertion in model container [2022-01-10 06:41:17,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:41:17" (1/1) ... [2022-01-10 06:41:17,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:41:17,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:41:18,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c[646,659] [2022-01-10 06:41:18,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:41:18,157 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:41:18,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.5.cil.c[646,659] [2022-01-10 06:41:18,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:41:18,238 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:41:18,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18 WrapperNode [2022-01-10 06:41:18,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:41:18,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:41:18,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:41:18,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:41:18,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,279 INFO L137 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 863 [2022-01-10 06:41:18,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:41:18,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:41:18,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:41:18,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:41:18,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:41:18,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:41:18,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:41:18,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:41:18,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (1/1) ... [2022-01-10 06:41:18,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:41:18,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:41:18,363 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 06:41:18,366 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 06:41:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:41:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:41:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 06:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 06:41:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:41:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:41:18,468 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:41:18,470 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:41:19,110 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:41:19,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:41:19,117 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 06:41:19,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:41:19 BoogieIcfgContainer [2022-01-10 06:41:19,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:41:19,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:41:19,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:41:19,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:41:19,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:41:17" (1/3) ... [2022-01-10 06:41:19,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1843d55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:41:19, skipping insertion in model container [2022-01-10 06:41:19,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:18" (2/3) ... [2022-01-10 06:41:19,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1843d55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:41:19, skipping insertion in model container [2022-01-10 06:41:19,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:41:19" (3/3) ... [2022-01-10 06:41:19,127 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2022-01-10 06:41:19,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:41:19,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:41:19,180 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:41:19,186 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 06:41:19,187 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:41:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 271 states have (on average 1.8560885608856088) internal successors, (503), 277 states have internal predecessors, (503), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 06:41:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 06:41:19,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:19,225 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] [2022-01-10 06:41:19,226 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash 193087859, now seen corresponding path program 1 times [2022-01-10 06:41:19,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:19,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228466727] [2022-01-10 06:41:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:19,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:19,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:19,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:19,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:41:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:19,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:41:19,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:19,445 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 06:41:19,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:19,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:19,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228466727] [2022-01-10 06:41:19,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228466727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:19,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:19,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:41:19,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101848114] [2022-01-10 06:41:19,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:19,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:41:19,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:19,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:41:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:41:19,478 INFO L87 Difference]: Start difference. First operand has 279 states, 271 states have (on average 1.8560885608856088) internal successors, (503), 277 states have internal predecessors, (503), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:19,563 INFO L93 Difference]: Finished difference Result 536 states and 987 transitions. [2022-01-10 06:41:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:41:19,565 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-10 06:41:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:19,579 INFO L225 Difference]: With dead ends: 536 [2022-01-10 06:41:19,579 INFO L226 Difference]: Without dead ends: 273 [2022-01-10 06:41:19,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:41:19,587 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:19,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-10 06:41:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-01-10 06:41:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.7640449438202248) internal successors, (471), 271 states have internal predecessors, (471), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 476 transitions. [2022-01-10 06:41:19,649 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 476 transitions. Word has length 29 [2022-01-10 06:41:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:19,649 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 476 transitions. [2022-01-10 06:41:19,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 476 transitions. [2022-01-10 06:41:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 06:41:19,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:19,655 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] [2022-01-10 06:41:19,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:19,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:19,863 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:19,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash -714327722, now seen corresponding path program 1 times [2022-01-10 06:41:19,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:19,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313094789] [2022-01-10 06:41:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:19,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:19,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:19,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:19,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:41:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:19,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:19,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:19,969 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 06:41:19,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:19,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:19,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313094789] [2022-01-10 06:41:19,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313094789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:19,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:19,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:19,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548460747] [2022-01-10 06:41:19,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:19,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:19,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:19,972 INFO L87 Difference]: Start difference. First operand 273 states and 476 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:20,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:20,186 INFO L93 Difference]: Finished difference Result 722 states and 1244 transitions. [2022-01-10 06:41:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:20,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-10 06:41:20,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:20,189 INFO L225 Difference]: With dead ends: 722 [2022-01-10 06:41:20,189 INFO L226 Difference]: Without dead ends: 454 [2022-01-10 06:41:20,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 06:41:20,190 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 267 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:20,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 789 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:41:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-01-10 06:41:20,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 441. [2022-01-10 06:41:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 435 states have (on average 1.6045977011494252) internal successors, (698), 439 states have internal predecessors, (698), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 703 transitions. [2022-01-10 06:41:20,201 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 703 transitions. Word has length 30 [2022-01-10 06:41:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:20,201 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 703 transitions. [2022-01-10 06:41:20,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 703 transitions. [2022-01-10 06:41:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 06:41:20,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:20,203 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] [2022-01-10 06:41:20,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:20,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:20,430 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1865699697, now seen corresponding path program 1 times [2022-01-10 06:41:20,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:20,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362099378] [2022-01-10 06:41:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:20,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:20,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:20,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:20,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:41:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:20,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:20,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:20,535 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 06:41:20,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:20,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:20,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362099378] [2022-01-10 06:41:20,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362099378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:20,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:20,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:20,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085160250] [2022-01-10 06:41:20,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:20,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:20,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:20,537 INFO L87 Difference]: Start difference. First operand 441 states and 703 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:20,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:20,625 INFO L93 Difference]: Finished difference Result 1161 states and 1877 transitions. [2022-01-10 06:41:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:20,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 06:41:20,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:20,628 INFO L225 Difference]: With dead ends: 1161 [2022-01-10 06:41:20,628 INFO L226 Difference]: Without dead ends: 734 [2022-01-10 06:41:20,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 06:41:20,630 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 334 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:20,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1040 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:41:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-01-10 06:41:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 721. [2022-01-10 06:41:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 715 states have (on average 1.6391608391608392) internal successors, (1172), 719 states have internal predecessors, (1172), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1177 transitions. [2022-01-10 06:41:20,643 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1177 transitions. Word has length 41 [2022-01-10 06:41:20,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:20,644 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 1177 transitions. [2022-01-10 06:41:20,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:20,644 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1177 transitions. [2022-01-10 06:41:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 06:41:20,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:20,645 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] [2022-01-10 06:41:20,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:20,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:20,852 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:20,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash 614817242, now seen corresponding path program 1 times [2022-01-10 06:41:20,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:20,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528855432] [2022-01-10 06:41:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:20,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:20,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:20,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:20,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:41:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:20,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:20,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:20,992 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 06:41:20,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:20,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:20,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528855432] [2022-01-10 06:41:20,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528855432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:20,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:20,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:20,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226786669] [2022-01-10 06:41:20,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:20,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:20,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:20,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:20,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:20,994 INFO L87 Difference]: Start difference. First operand 721 states and 1177 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:21,048 INFO L93 Difference]: Finished difference Result 1809 states and 2948 transitions. [2022-01-10 06:41:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-10 06:41:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:21,062 INFO L225 Difference]: With dead ends: 1809 [2022-01-10 06:41:21,063 INFO L226 Difference]: Without dead ends: 1113 [2022-01-10 06:41:21,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 06:41:21,068 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 361 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:21,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 821 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-01-10 06:41:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1102. [2022-01-10 06:41:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1096 states have (on average 1.6259124087591241) internal successors, (1782), 1100 states have internal predecessors, (1782), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1787 transitions. [2022-01-10 06:41:21,104 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1787 transitions. Word has length 42 [2022-01-10 06:41:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:21,119 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1787 transitions. [2022-01-10 06:41:21,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1787 transitions. [2022-01-10 06:41:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 06:41:21,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:21,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:21,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:21,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:21,325 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2063798548, now seen corresponding path program 1 times [2022-01-10 06:41:21,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:21,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684834016] [2022-01-10 06:41:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:21,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:21,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:21,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:21,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:41:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:21,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:21,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:41:21,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:21,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:21,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684834016] [2022-01-10 06:41:21,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684834016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:21,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:21,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:21,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347280294] [2022-01-10 06:41:21,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:21,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:21,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:21,505 INFO L87 Difference]: Start difference. First operand 1102 states and 1787 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:21,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:21,563 INFO L93 Difference]: Finished difference Result 2947 states and 4783 transitions. [2022-01-10 06:41:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-10 06:41:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:21,569 INFO L225 Difference]: With dead ends: 2947 [2022-01-10 06:41:21,569 INFO L226 Difference]: Without dead ends: 1870 [2022-01-10 06:41:21,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 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 06:41:21,571 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 422 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:21,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1081 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-01-10 06:41:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1756. [2022-01-10 06:41:21,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1750 states have (on average 1.6068571428571428) internal successors, (2812), 1754 states have internal predecessors, (2812), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2817 transitions. [2022-01-10 06:41:21,610 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2817 transitions. Word has length 48 [2022-01-10 06:41:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:21,612 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 2817 transitions. [2022-01-10 06:41:21,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2817 transitions. [2022-01-10 06:41:21,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 06:41:21,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:21,613 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] [2022-01-10 06:41:21,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:21,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:21,819 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1086798560, now seen corresponding path program 1 times [2022-01-10 06:41:21,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:21,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212364538] [2022-01-10 06:41:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:21,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:21,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:21,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:21,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:41:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:21,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:21,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:21,942 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 06:41:21,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:21,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:21,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212364538] [2022-01-10 06:41:21,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212364538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:21,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:21,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:21,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909459501] [2022-01-10 06:41:21,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:21,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:21,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:21,944 INFO L87 Difference]: Start difference. First operand 1756 states and 2817 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:22,050 INFO L93 Difference]: Finished difference Result 4557 states and 7293 transitions. [2022-01-10 06:41:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 06:41:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:22,059 INFO L225 Difference]: With dead ends: 4557 [2022-01-10 06:41:22,059 INFO L226 Difference]: Without dead ends: 2820 [2022-01-10 06:41:22,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 06:41:22,062 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 353 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:22,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 839 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:41:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2022-01-10 06:41:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2761. [2022-01-10 06:41:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2755 states have (on average 1.572776769509982) internal successors, (4333), 2759 states have internal predecessors, (4333), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:22,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 4338 transitions. [2022-01-10 06:41:22,130 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 4338 transitions. Word has length 53 [2022-01-10 06:41:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:22,130 INFO L470 AbstractCegarLoop]: Abstraction has 2761 states and 4338 transitions. [2022-01-10 06:41:22,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 4338 transitions. [2022-01-10 06:41:22,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 06:41:22,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:22,131 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] [2022-01-10 06:41:22,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:22,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:22,338 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:22,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1057985577, now seen corresponding path program 1 times [2022-01-10 06:41:22,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:22,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059532641] [2022-01-10 06:41:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:22,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:22,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:22,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:22,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:41:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:22,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:22,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:22,462 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 06:41:22,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:22,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:22,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059532641] [2022-01-10 06:41:22,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059532641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:22,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:22,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:22,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473979156] [2022-01-10 06:41:22,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:22,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:22,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:22,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:22,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:22,464 INFO L87 Difference]: Start difference. First operand 2761 states and 4338 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:22,526 INFO L93 Difference]: Finished difference Result 5769 states and 9100 transitions. [2022-01-10 06:41:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:22,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 06:41:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:22,536 INFO L225 Difference]: With dead ends: 5769 [2022-01-10 06:41:22,536 INFO L226 Difference]: Without dead ends: 3078 [2022-01-10 06:41:22,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 06:41:22,541 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 373 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:22,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 728 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-01-10 06:41:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2968. [2022-01-10 06:41:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2962 states have (on average 1.5692099932478056) internal successors, (4648), 2966 states have internal predecessors, (4648), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 4653 transitions. [2022-01-10 06:41:22,599 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 4653 transitions. Word has length 53 [2022-01-10 06:41:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:22,600 INFO L470 AbstractCegarLoop]: Abstraction has 2968 states and 4653 transitions. [2022-01-10 06:41:22,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:22,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 4653 transitions. [2022-01-10 06:41:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 06:41:22,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:22,601 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] [2022-01-10 06:41:22,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:22,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:22,808 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1920778764, now seen corresponding path program 1 times [2022-01-10 06:41:22,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:22,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926657969] [2022-01-10 06:41:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:22,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:22,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:22,810 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:22,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:41:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:22,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:22,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:22,922 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 06:41:22,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:22,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:22,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926657969] [2022-01-10 06:41:22,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926657969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:22,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:22,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:22,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766186284] [2022-01-10 06:41:22,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:22,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:22,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:22,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:22,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:22,924 INFO L87 Difference]: Start difference. First operand 2968 states and 4653 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:23,239 INFO L93 Difference]: Finished difference Result 7089 states and 11246 transitions. [2022-01-10 06:41:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:23,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 06:41:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:23,276 INFO L225 Difference]: With dead ends: 7089 [2022-01-10 06:41:23,276 INFO L226 Difference]: Without dead ends: 4191 [2022-01-10 06:41:23,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 06:41:23,282 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 258 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:23,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 891 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:41:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2022-01-10 06:41:23,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 4114. [2022-01-10 06:41:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4114 states, 4108 states have (on average 1.5163096397273612) internal successors, (6229), 4112 states have internal predecessors, (6229), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 6234 transitions. [2022-01-10 06:41:23,374 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 6234 transitions. Word has length 62 [2022-01-10 06:41:23,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:23,374 INFO L470 AbstractCegarLoop]: Abstraction has 4114 states and 6234 transitions. [2022-01-10 06:41:23,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:23,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 6234 transitions. [2022-01-10 06:41:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 06:41:23,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:23,376 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] [2022-01-10 06:41:23,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:23,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:23,583 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:23,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1239764768, now seen corresponding path program 1 times [2022-01-10 06:41:23,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:23,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299840817] [2022-01-10 06:41:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:23,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:23,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:23,585 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:23,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:41:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:23,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:23,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:23,731 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 06:41:23,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:23,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:23,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299840817] [2022-01-10 06:41:23,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299840817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:23,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:23,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:23,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378387879] [2022-01-10 06:41:23,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:23,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:23,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:23,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:23,733 INFO L87 Difference]: Start difference. First operand 4114 states and 6234 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:23,838 INFO L93 Difference]: Finished difference Result 8071 states and 12247 transitions. [2022-01-10 06:41:23,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:23,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 06:41:23,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:23,850 INFO L225 Difference]: With dead ends: 8071 [2022-01-10 06:41:23,851 INFO L226 Difference]: Without dead ends: 4027 [2022-01-10 06:41:23,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 06:41:23,856 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 350 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:23,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 448 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2022-01-10 06:41:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 4027. [2022-01-10 06:41:23,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4021 states have (on average 1.4936582939567271) internal successors, (6006), 4025 states have internal predecessors, (6006), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 6011 transitions. [2022-01-10 06:41:23,942 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 6011 transitions. Word has length 64 [2022-01-10 06:41:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:23,942 INFO L470 AbstractCegarLoop]: Abstraction has 4027 states and 6011 transitions. [2022-01-10 06:41:23,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 6011 transitions. [2022-01-10 06:41:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 06:41:23,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:23,944 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] [2022-01-10 06:41:23,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 06:41:24,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:24,151 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:24,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1801528906, now seen corresponding path program 1 times [2022-01-10 06:41:24,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:24,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095135544] [2022-01-10 06:41:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:24,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:24,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:24,153 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:24,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:41:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:24,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:24,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:24,291 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 06:41:24,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:24,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095135544] [2022-01-10 06:41:24,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095135544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:24,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:24,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:24,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989639227] [2022-01-10 06:41:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:24,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:24,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:24,293 INFO L87 Difference]: Start difference. First operand 4027 states and 6011 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:24,429 INFO L93 Difference]: Finished difference Result 8314 states and 12558 transitions. [2022-01-10 06:41:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:24,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 06:41:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:24,455 INFO L225 Difference]: With dead ends: 8314 [2022-01-10 06:41:24,455 INFO L226 Difference]: Without dead ends: 4308 [2022-01-10 06:41:24,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 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 06:41:24,472 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 317 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:24,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1015 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2022-01-10 06:41:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3029. [2022-01-10 06:41:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3029 states, 3023 states have (on average 1.5104201124710552) internal successors, (4566), 3027 states have internal predecessors, (4566), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 4571 transitions. [2022-01-10 06:41:24,570 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 4571 transitions. Word has length 65 [2022-01-10 06:41:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:24,571 INFO L470 AbstractCegarLoop]: Abstraction has 3029 states and 4571 transitions. [2022-01-10 06:41:24,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 4571 transitions. [2022-01-10 06:41:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:41:24,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:24,572 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] [2022-01-10 06:41:24,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:24,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:24,779 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash -106317501, now seen corresponding path program 1 times [2022-01-10 06:41:24,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:24,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568873079] [2022-01-10 06:41:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:24,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:24,796 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:24,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:41:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:24,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:41:24,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:24,974 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 06:41:24,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:24,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:24,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568873079] [2022-01-10 06:41:24,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568873079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:24,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:24,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:41:24,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462125628] [2022-01-10 06:41:24,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:24,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:41:24,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:41:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:41:24,976 INFO L87 Difference]: Start difference. First operand 3029 states and 4571 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:25,301 INFO L93 Difference]: Finished difference Result 12703 states and 19139 transitions. [2022-01-10 06:41:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:41:25,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 06:41:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:25,341 INFO L225 Difference]: With dead ends: 12703 [2022-01-10 06:41:25,341 INFO L226 Difference]: Without dead ends: 9917 [2022-01-10 06:41:25,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:41:25,365 INFO L933 BasicCegarLoop]: 1076 mSDtfsCounter, 1824 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:25,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1824 Valid, 3436 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:41:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9917 states. [2022-01-10 06:41:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9917 to 3640. [2022-01-10 06:41:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3634 states have (on average 1.5046780407264722) internal successors, (5468), 3638 states have internal predecessors, (5468), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5473 transitions. [2022-01-10 06:41:25,564 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5473 transitions. Word has length 67 [2022-01-10 06:41:25,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:25,564 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5473 transitions. [2022-01-10 06:41:25,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5473 transitions. [2022-01-10 06:41:25,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:41:25,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:25,566 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] [2022-01-10 06:41:25,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 06:41:25,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:25,775 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1482385041, now seen corresponding path program 1 times [2022-01-10 06:41:25,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:25,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998647963] [2022-01-10 06:41:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:25,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:25,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:25,777 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:25,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:41:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:25,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:41:25,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:26,033 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 06:41:26,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:26,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:26,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998647963] [2022-01-10 06:41:26,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998647963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:26,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:26,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:41:26,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872557222] [2022-01-10 06:41:26,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:26,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:41:26,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:26,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:41:26,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:41:26,035 INFO L87 Difference]: Start difference. First operand 3640 states and 5473 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:26,905 INFO L93 Difference]: Finished difference Result 20203 states and 30262 transitions. [2022-01-10 06:41:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-10 06:41:26,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 06:41:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:26,938 INFO L225 Difference]: With dead ends: 20203 [2022-01-10 06:41:26,939 INFO L226 Difference]: Without dead ends: 16806 [2022-01-10 06:41:26,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2022-01-10 06:41:26,948 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 3794 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3794 SdHoareTripleChecker+Valid, 6459 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:26,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3794 Valid, 6459 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:41:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16806 states. [2022-01-10 06:41:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16806 to 3872. [2022-01-10 06:41:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3866 states have (on average 1.4919813760993275) internal successors, (5768), 3870 states have internal predecessors, (5768), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 5773 transitions. [2022-01-10 06:41:27,188 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 5773 transitions. Word has length 68 [2022-01-10 06:41:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:27,189 INFO L470 AbstractCegarLoop]: Abstraction has 3872 states and 5773 transitions. [2022-01-10 06:41:27,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 5773 transitions. [2022-01-10 06:41:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 06:41:27,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:27,191 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:27,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:27,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:27,398 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash -22506739, now seen corresponding path program 1 times [2022-01-10 06:41:27,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:27,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784602830] [2022-01-10 06:41:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:27,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:27,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:27,407 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:27,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:41:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:27,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:27,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:41:27,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:27,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:27,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784602830] [2022-01-10 06:41:27,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784602830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:27,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:27,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:27,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868624896] [2022-01-10 06:41:27,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:27,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:27,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:27,579 INFO L87 Difference]: Start difference. First operand 3872 states and 5773 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:27,841 INFO L93 Difference]: Finished difference Result 9551 states and 14185 transitions. [2022-01-10 06:41:27,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:27,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-10 06:41:27,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:27,859 INFO L225 Difference]: With dead ends: 9551 [2022-01-10 06:41:27,859 INFO L226 Difference]: Without dead ends: 5592 [2022-01-10 06:41:27,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 06:41:27,866 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 293 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:27,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 1028 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:27,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2022-01-10 06:41:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5528. [2022-01-10 06:41:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5522 states have (on average 1.4770010865628396) internal successors, (8156), 5526 states have internal predecessors, (8156), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 8161 transitions. [2022-01-10 06:41:28,099 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 8161 transitions. Word has length 91 [2022-01-10 06:41:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:28,099 INFO L470 AbstractCegarLoop]: Abstraction has 5528 states and 8161 transitions. [2022-01-10 06:41:28,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 8161 transitions. [2022-01-10 06:41:28,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 06:41:28,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:28,101 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:28,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:28,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:28,307 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash 713103324, now seen corresponding path program 1 times [2022-01-10 06:41:28,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:28,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342690525] [2022-01-10 06:41:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:28,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:28,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:28,309 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:28,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:41:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:28,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:28,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:41:28,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:28,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:28,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342690525] [2022-01-10 06:41:28,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342690525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:28,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:28,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:28,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682982923] [2022-01-10 06:41:28,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:28,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:28,489 INFO L87 Difference]: Start difference. First operand 5528 states and 8161 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:28,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:28,667 INFO L93 Difference]: Finished difference Result 9594 states and 14068 transitions. [2022-01-10 06:41:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 06:41:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:28,675 INFO L225 Difference]: With dead ends: 9594 [2022-01-10 06:41:28,675 INFO L226 Difference]: Without dead ends: 3999 [2022-01-10 06:41:28,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 06:41:28,682 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 369 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:28,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 557 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2022-01-10 06:41:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3939. [2022-01-10 06:41:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3933 states have (on average 1.353165522501907) internal successors, (5322), 3937 states have internal predecessors, (5322), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5327 transitions. [2022-01-10 06:41:28,877 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5327 transitions. Word has length 99 [2022-01-10 06:41:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:28,877 INFO L470 AbstractCegarLoop]: Abstraction has 3939 states and 5327 transitions. [2022-01-10 06:41:28,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5327 transitions. [2022-01-10 06:41:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:41:28,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:28,878 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:28,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:29,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:29,086 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:29,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1285693593, now seen corresponding path program 1 times [2022-01-10 06:41:29,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:29,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037572718] [2022-01-10 06:41:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:29,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:29,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:29,088 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:29,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:41:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:29,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:29,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:41:29,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:29,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:29,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037572718] [2022-01-10 06:41:29,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037572718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:29,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:29,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:29,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877277852] [2022-01-10 06:41:29,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:29,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:29,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:29,282 INFO L87 Difference]: Start difference. First operand 3939 states and 5327 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:29,481 INFO L93 Difference]: Finished difference Result 6990 states and 9487 transitions. [2022-01-10 06:41:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:29,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-10 06:41:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:29,487 INFO L225 Difference]: With dead ends: 6990 [2022-01-10 06:41:29,487 INFO L226 Difference]: Without dead ends: 3083 [2022-01-10 06:41:29,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 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 06:41:29,494 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 275 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:29,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 433 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2022-01-10 06:41:29,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 2868. [2022-01-10 06:41:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2862 states have (on average 1.3322851153039832) internal successors, (3813), 2866 states have internal predecessors, (3813), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 3818 transitions. [2022-01-10 06:41:29,650 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 3818 transitions. Word has length 103 [2022-01-10 06:41:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:29,650 INFO L470 AbstractCegarLoop]: Abstraction has 2868 states and 3818 transitions. [2022-01-10 06:41:29,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 3818 transitions. [2022-01-10 06:41:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:41:29,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:29,652 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:29,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:29,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:29,862 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:29,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:29,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1256173523, now seen corresponding path program 1 times [2022-01-10 06:41:29,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:29,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842087952] [2022-01-10 06:41:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:29,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:29,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:29,866 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:29,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:41:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:29,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:29,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:41:30,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:30,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:30,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842087952] [2022-01-10 06:41:30,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842087952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:30,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:30,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:30,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335349968] [2022-01-10 06:41:30,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:30,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:30,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:30,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:30,082 INFO L87 Difference]: Start difference. First operand 2868 states and 3818 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:30,226 INFO L93 Difference]: Finished difference Result 5534 states and 7408 transitions. [2022-01-10 06:41:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:30,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 06:41:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:30,231 INFO L225 Difference]: With dead ends: 5534 [2022-01-10 06:41:30,231 INFO L226 Difference]: Without dead ends: 2865 [2022-01-10 06:41:30,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 06:41:30,237 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 234 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:30,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 801 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-01-10 06:41:30,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2821. [2022-01-10 06:41:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2815 states have (on average 1.3232682060390764) internal successors, (3725), 2819 states have internal predecessors, (3725), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3730 transitions. [2022-01-10 06:41:30,377 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3730 transitions. Word has length 104 [2022-01-10 06:41:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:30,377 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 3730 transitions. [2022-01-10 06:41:30,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3730 transitions. [2022-01-10 06:41:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 06:41:30,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:30,388 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:30,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 06:41:30,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:30,595 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1280711905, now seen corresponding path program 1 times [2022-01-10 06:41:30,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:30,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063049572] [2022-01-10 06:41:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:30,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:30,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:30,605 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:30,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:41:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:30,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:41:30,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:41:30,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:41:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:41:31,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:31,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063049572] [2022-01-10 06:41:31,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063049572] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:41:31,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:41:31,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-10 06:41:31,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777491257] [2022-01-10 06:41:31,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:41:31,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:41:31,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:31,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:41:31,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:41:31,256 INFO L87 Difference]: Start difference. First operand 2821 states and 3730 transitions. Second operand has 8 states, 8 states have (on average 31.625) internal successors, (253), 8 states have internal predecessors, (253), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:31,845 INFO L93 Difference]: Finished difference Result 9793 states and 13108 transitions. [2022-01-10 06:41:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 06:41:31,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.625) internal successors, (253), 8 states have internal predecessors, (253), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-01-10 06:41:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:31,855 INFO L225 Difference]: With dead ends: 9793 [2022-01-10 06:41:31,855 INFO L226 Difference]: Without dead ends: 7171 [2022-01-10 06:41:31,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:41:31,860 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 2982 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2982 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:31,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2982 Valid, 3149 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:41:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2022-01-10 06:41:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 5172. [2022-01-10 06:41:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5172 states, 5166 states have (on average 1.335656213704994) internal successors, (6900), 5170 states have internal predecessors, (6900), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 6905 transitions. [2022-01-10 06:41:32,169 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 6905 transitions. Word has length 163 [2022-01-10 06:41:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:32,170 INFO L470 AbstractCegarLoop]: Abstraction has 5172 states and 6905 transitions. [2022-01-10 06:41:32,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.625) internal successors, (253), 8 states have internal predecessors, (253), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 6905 transitions. [2022-01-10 06:41:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 06:41:32,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:32,171 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:32,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:32,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:32,378 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:32,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:32,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1102689509, now seen corresponding path program 1 times [2022-01-10 06:41:32,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:32,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771625780] [2022-01-10 06:41:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:32,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:32,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:32,380 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:32,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:41:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:32,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:41:32,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:41:32,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:41:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:41:32,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:32,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771625780] [2022-01-10 06:41:32,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771625780] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:41:32,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:41:32,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2022-01-10 06:41:32,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213628073] [2022-01-10 06:41:32,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:41:32,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:41:32,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:32,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:41:32,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:41:32,923 INFO L87 Difference]: Start difference. First operand 5172 states and 6905 transitions. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:34,320 INFO L93 Difference]: Finished difference Result 17850 states and 23840 transitions. [2022-01-10 06:41:34,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 06:41:34,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-01-10 06:41:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:34,345 INFO L225 Difference]: With dead ends: 17850 [2022-01-10 06:41:34,345 INFO L226 Difference]: Without dead ends: 12877 [2022-01-10 06:41:34,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2022-01-10 06:41:34,379 INFO L933 BasicCegarLoop]: 1300 mSDtfsCounter, 2817 mSDsluCounter, 7330 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 8630 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:34,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 8630 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:41:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12877 states. [2022-01-10 06:41:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12877 to 5176. [2022-01-10 06:41:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5170 states have (on average 1.3353965183752419) internal successors, (6904), 5174 states have internal predecessors, (6904), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 6909 transitions. [2022-01-10 06:41:34,848 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 6909 transitions. Word has length 166 [2022-01-10 06:41:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:34,848 INFO L470 AbstractCegarLoop]: Abstraction has 5176 states and 6909 transitions. [2022-01-10 06:41:34,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 6909 transitions. [2022-01-10 06:41:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-10 06:41:34,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:34,849 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:34,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-01-10 06:41:35,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:35,059 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1782230669, now seen corresponding path program 1 times [2022-01-10 06:41:35,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:35,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011097876] [2022-01-10 06:41:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:35,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:35,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:35,061 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:35,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:41:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:35,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:41:35,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:41:35,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:41:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:41:35,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:35,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011097876] [2022-01-10 06:41:35,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011097876] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:41:35,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:41:35,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-01-10 06:41:35,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922264206] [2022-01-10 06:41:35,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:41:35,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:41:35,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:35,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:41:35,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:41:35,981 INFO L87 Difference]: Start difference. First operand 5176 states and 6909 transitions. Second operand has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:37,712 INFO L93 Difference]: Finished difference Result 18493 states and 24611 transitions. [2022-01-10 06:41:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-10 06:41:37,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-01-10 06:41:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:37,728 INFO L225 Difference]: With dead ends: 18493 [2022-01-10 06:41:37,728 INFO L226 Difference]: Without dead ends: 13516 [2022-01-10 06:41:37,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 536 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2022-01-10 06:41:37,736 INFO L933 BasicCegarLoop]: 1466 mSDtfsCounter, 5906 mSDsluCounter, 10234 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5906 SdHoareTripleChecker+Valid, 11700 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:37,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5906 Valid, 11700 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:41:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13516 states. [2022-01-10 06:41:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13516 to 5336. [2022-01-10 06:41:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5336 states, 5330 states have (on average 1.3317073170731708) internal successors, (7098), 5334 states have internal predecessors, (7098), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 7103 transitions. [2022-01-10 06:41:38,148 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 7103 transitions. Word has length 266 [2022-01-10 06:41:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:38,149 INFO L470 AbstractCegarLoop]: Abstraction has 5336 states and 7103 transitions. [2022-01-10 06:41:38,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 7103 transitions. [2022-01-10 06:41:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-01-10 06:41:38,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:38,152 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:38,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:38,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:38,359 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1166169147, now seen corresponding path program 1 times [2022-01-10 06:41:38,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:38,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135281351] [2022-01-10 06:41:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:38,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:38,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:38,361 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:38,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:41:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:38,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 06:41:38,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 65 proven. 316 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 06:41:38,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:41:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 65 proven. 316 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 06:41:39,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135281351] [2022-01-10 06:41:39,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135281351] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:41:39,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:41:39,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:41:39,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220877120] [2022-01-10 06:41:39,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:41:39,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:41:39,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:41:39,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:41:39,656 INFO L87 Difference]: Start difference. First operand 5336 states and 7103 transitions. Second operand has 16 states, 16 states have (on average 40.4375) internal successors, (647), 16 states have internal predecessors, (647), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:40,917 INFO L93 Difference]: Finished difference Result 14749 states and 19720 transitions. [2022-01-10 06:41:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 06:41:40,918 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.4375) internal successors, (647), 16 states have internal predecessors, (647), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-01-10 06:41:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:40,935 INFO L225 Difference]: With dead ends: 14749 [2022-01-10 06:41:40,936 INFO L226 Difference]: Without dead ends: 9612 [2022-01-10 06:41:40,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2022-01-10 06:41:40,945 INFO L933 BasicCegarLoop]: 1481 mSDtfsCounter, 8046 mSDsluCounter, 9520 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8046 SdHoareTripleChecker+Valid, 11001 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:40,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8046 Valid, 11001 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:41:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9612 states. [2022-01-10 06:41:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9612 to 7588. [2022-01-10 06:41:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7588 states, 7582 states have (on average 1.3352677393827486) internal successors, (10124), 7586 states have internal predecessors, (10124), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7588 states to 7588 states and 10129 transitions. [2022-01-10 06:41:41,488 INFO L78 Accepts]: Start accepts. Automaton has 7588 states and 10129 transitions. Word has length 364 [2022-01-10 06:41:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:41,488 INFO L470 AbstractCegarLoop]: Abstraction has 7588 states and 10129 transitions. [2022-01-10 06:41:41,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.4375) internal successors, (647), 16 states have internal predecessors, (647), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7588 states and 10129 transitions. [2022-01-10 06:41:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-01-10 06:41:41,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:41,492 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:41,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:41,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:41,700 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:41,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1036581045, now seen corresponding path program 1 times [2022-01-10 06:41:41,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:41,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363768549] [2022-01-10 06:41:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:41,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:41,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:41,715 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:41,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:41:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:41,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 06:41:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 457 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 06:41:42,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:41:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 457 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 06:41:42,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:42,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363768549] [2022-01-10 06:41:42,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363768549] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:41:42,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:41:42,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-01-10 06:41:42,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44055857] [2022-01-10 06:41:42,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:41:42,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 06:41:42,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 06:41:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:41:42,828 INFO L87 Difference]: Start difference. First operand 7588 states and 10129 transitions. Second operand has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:45,850 INFO L93 Difference]: Finished difference Result 25104 states and 33480 transitions. [2022-01-10 06:41:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-10 06:41:45,851 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2022-01-10 06:41:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:45,886 INFO L225 Difference]: With dead ends: 25104 [2022-01-10 06:41:45,886 INFO L226 Difference]: Without dead ends: 17715 [2022-01-10 06:41:45,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 738 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=2088, Unknown=0, NotChecked=0, Total=2352 [2022-01-10 06:41:45,904 INFO L933 BasicCegarLoop]: 2946 mSDtfsCounter, 4747 mSDsluCounter, 25904 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 28850 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:45,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 28850 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 06:41:45,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17715 states. [2022-01-10 06:41:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17715 to 7596. [2022-01-10 06:41:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7596 states, 7590 states have (on average 1.3349143610013174) internal successors, (10132), 7594 states have internal predecessors, (10132), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7596 states to 7596 states and 10137 transitions. [2022-01-10 06:41:46,643 INFO L78 Accepts]: Start accepts. Automaton has 7596 states and 10137 transitions. Word has length 367 [2022-01-10 06:41:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:46,644 INFO L470 AbstractCegarLoop]: Abstraction has 7596 states and 10137 transitions. [2022-01-10 06:41:46,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 7596 states and 10137 transitions. [2022-01-10 06:41:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-01-10 06:41:46,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:46,648 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:46,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:46,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:46,856 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:46,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1736090188, now seen corresponding path program 1 times [2022-01-10 06:41:46,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:46,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423502717] [2022-01-10 06:41:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:46,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:46,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:46,858 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:46,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:41:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:47,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:41:47,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 20 proven. 828 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:41:47,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:41:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 20 proven. 828 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:41:48,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:48,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423502717] [2022-01-10 06:41:48,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423502717] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:41:48,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:41:48,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2022-01-10 06:41:48,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103062670] [2022-01-10 06:41:48,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:41:48,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 06:41:48,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 06:41:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-01-10 06:41:48,523 INFO L87 Difference]: Start difference. First operand 7596 states and 10137 transitions. Second operand has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:52,262 INFO L93 Difference]: Finished difference Result 26069 states and 34673 transitions. [2022-01-10 06:41:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-10 06:41:52,263 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 469 [2022-01-10 06:41:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:52,284 INFO L225 Difference]: With dead ends: 26069 [2022-01-10 06:41:52,285 INFO L226 Difference]: Without dead ends: 18672 [2022-01-10 06:41:52,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 944 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=345, Invalid=3437, Unknown=0, NotChecked=0, Total=3782 [2022-01-10 06:41:52,294 INFO L933 BasicCegarLoop]: 2542 mSDtfsCounter, 9014 mSDsluCounter, 27568 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9014 SdHoareTripleChecker+Valid, 30110 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:52,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9014 Valid, 30110 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 06:41:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18672 states. [2022-01-10 06:41:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18672 to 7760. [2022-01-10 06:41:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7760 states, 7754 states have (on average 1.3322156306422492) internal successors, (10330), 7758 states have internal predecessors, (10330), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:52,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 10335 transitions. [2022-01-10 06:41:52,998 INFO L78 Accepts]: Start accepts. Automaton has 7760 states and 10335 transitions. Word has length 469 [2022-01-10 06:41:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:52,999 INFO L470 AbstractCegarLoop]: Abstraction has 7760 states and 10335 transitions. [2022-01-10 06:41:52,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 7760 states and 10335 transitions. [2022-01-10 06:41:53,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-01-10 06:41:53,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:53,018 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:53,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:53,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:53,228 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1030265377, now seen corresponding path program 1 times [2022-01-10 06:41:53,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:53,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389316783] [2022-01-10 06:41:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:53,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:53,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:53,230 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:53,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:41:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:53,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:53,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-01-10 06:41:54,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:54,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389316783] [2022-01-10 06:41:54,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389316783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:54,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:54,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:54,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196154669] [2022-01-10 06:41:54,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:54,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:54,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:54,017 INFO L87 Difference]: Start difference. First operand 7760 states and 10335 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:54,455 INFO L93 Difference]: Finished difference Result 10399 states and 13745 transitions. [2022-01-10 06:41:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 569 [2022-01-10 06:41:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:54,460 INFO L225 Difference]: With dead ends: 10399 [2022-01-10 06:41:54,460 INFO L226 Difference]: Without dead ends: 2420 [2022-01-10 06:41:54,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 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 06:41:54,466 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 149 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:54,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 426 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:41:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-01-10 06:41:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1536. [2022-01-10 06:41:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1532 states have (on average 1.0953002610966058) internal successors, (1678), 1534 states have internal predecessors, (1678), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 1681 transitions. [2022-01-10 06:41:54,617 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 1681 transitions. Word has length 569 [2022-01-10 06:41:54,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:54,618 INFO L470 AbstractCegarLoop]: Abstraction has 1536 states and 1681 transitions. [2022-01-10 06:41:54,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:54,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 1681 transitions. [2022-01-10 06:41:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2022-01-10 06:41:54,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:54,621 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:54,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:54,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:54,831 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:54,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:54,831 INFO L85 PathProgramCache]: Analyzing trace with hash 408367013, now seen corresponding path program 1 times [2022-01-10 06:41:54,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:54,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680553876] [2022-01-10 06:41:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:54,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:54,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:54,833 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:54,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:41:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:55,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 06:41:55,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 269 proven. 1066 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:41:55,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:41:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1356 backedges. 269 proven. 1066 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:41:57,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:57,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680553876] [2022-01-10 06:41:57,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680553876] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:41:57,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:41:57,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-01-10 06:41:57,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660143181] [2022-01-10 06:41:57,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:41:57,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 06:41:57,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:57,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 06:41:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-01-10 06:41:57,026 INFO L87 Difference]: Start difference. First operand 1536 states and 1681 transitions. Second operand has 24 states, 24 states have (on average 43.833333333333336) internal successors, (1052), 24 states have internal predecessors, (1052), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:57,929 INFO L93 Difference]: Finished difference Result 2802 states and 3137 transitions. [2022-01-10 06:41:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:41:57,929 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 43.833333333333336) internal successors, (1052), 24 states have internal predecessors, (1052), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 572 [2022-01-10 06:41:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:57,932 INFO L225 Difference]: With dead ends: 2802 [2022-01-10 06:41:57,932 INFO L226 Difference]: Without dead ends: 2353 [2022-01-10 06:41:57,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 1125 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 06:41:57,934 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 3508 mSDsluCounter, 13141 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3508 SdHoareTripleChecker+Valid, 14252 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:57,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3508 Valid, 14252 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:41:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2022-01-10 06:41:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2306. [2022-01-10 06:41:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2302 states have (on average 1.1203301476976542) internal successors, (2579), 2304 states have internal predecessors, (2579), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 2582 transitions. [2022-01-10 06:41:58,231 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 2582 transitions. Word has length 572 [2022-01-10 06:41:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:58,232 INFO L470 AbstractCegarLoop]: Abstraction has 2306 states and 2582 transitions. [2022-01-10 06:41:58,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 43.833333333333336) internal successors, (1052), 24 states have internal predecessors, (1052), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:41:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 2582 transitions. [2022-01-10 06:41:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-01-10 06:41:58,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:58,236 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:58,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 06:41:58,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:41:58,445 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:58,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash 61583050, now seen corresponding path program 1 times [2022-01-10 06:41:58,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:58,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283362228] [2022-01-10 06:41:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:58,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:58,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:58,448 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:41:58,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:41:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:58,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:41:58,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-01-10 06:41:59,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:59,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283362228] [2022-01-10 06:41:59,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283362228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:59,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:59,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:41:59,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748100700] [2022-01-10 06:41:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:59,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:41:59,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:41:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:41:59,354 INFO L87 Difference]: Start difference. First operand 2306 states and 2582 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:00,067 INFO L93 Difference]: Finished difference Result 4699 states and 5302 transitions. [2022-01-10 06:42:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 06:42:00,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 574 [2022-01-10 06:42:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:00,073 INFO L225 Difference]: With dead ends: 4699 [2022-01-10 06:42:00,073 INFO L226 Difference]: Without dead ends: 3694 [2022-01-10 06:42:00,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-01-10 06:42:00,076 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 980 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:00,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2673 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:42:00,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2022-01-10 06:42:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 2298. [2022-01-10 06:42:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2294 states have (on average 1.1163905841325197) internal successors, (2561), 2296 states have internal predecessors, (2561), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 2564 transitions. [2022-01-10 06:42:00,407 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 2564 transitions. Word has length 574 [2022-01-10 06:42:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:00,408 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 2564 transitions. [2022-01-10 06:42:00,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 2564 transitions. [2022-01-10 06:42:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-01-10 06:42:00,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:00,411 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:00,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:00,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:00,621 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1902632470, now seen corresponding path program 1 times [2022-01-10 06:42:00,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:00,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860335825] [2022-01-10 06:42:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:00,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:00,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:00,623 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:00,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:42:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:00,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:00,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2022-01-10 06:42:01,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:01,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:01,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860335825] [2022-01-10 06:42:01,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860335825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:01,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:01,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:42:01,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763440852] [2022-01-10 06:42:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:01,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:01,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:01,551 INFO L87 Difference]: Start difference. First operand 2298 states and 2564 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:02,043 INFO L93 Difference]: Finished difference Result 3952 states and 4440 transitions. [2022-01-10 06:42:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:42:02,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 575 [2022-01-10 06:42:02,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:02,048 INFO L225 Difference]: With dead ends: 3952 [2022-01-10 06:42:02,048 INFO L226 Difference]: Without dead ends: 2945 [2022-01-10 06:42:02,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:42:02,050 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 467 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:02,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 1003 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2022-01-10 06:42:02,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2227. [2022-01-10 06:42:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2224 states have (on average 1.0885791366906474) internal successors, (2421), 2225 states have internal predecessors, (2421), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2423 transitions. [2022-01-10 06:42:02,378 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2423 transitions. Word has length 575 [2022-01-10 06:42:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:02,378 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 2423 transitions. [2022-01-10 06:42:02,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2423 transitions. [2022-01-10 06:42:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-01-10 06:42:02,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:02,382 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:02,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 06:42:02,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:02,592 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:02,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1877942903, now seen corresponding path program 1 times [2022-01-10 06:42:02,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:02,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807701281] [2022-01-10 06:42:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:02,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:02,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:02,594 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:02,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:42:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:02,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 06:42:02,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 124 proven. 333 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-01-10 06:42:04,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:42:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 30 proven. 427 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-01-10 06:42:05,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:05,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807701281] [2022-01-10 06:42:05,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807701281] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:42:05,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:42:05,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2022-01-10 06:42:05,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48658455] [2022-01-10 06:42:05,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:42:05,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 06:42:05,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:05,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 06:42:05,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2022-01-10 06:42:05,298 INFO L87 Difference]: Start difference. First operand 2227 states and 2423 transitions. Second operand has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:06,386 INFO L93 Difference]: Finished difference Result 2599 states and 2831 transitions. [2022-01-10 06:42:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 06:42:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 631 [2022-01-10 06:42:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:06,390 INFO L225 Difference]: With dead ends: 2599 [2022-01-10 06:42:06,390 INFO L226 Difference]: Without dead ends: 2596 [2022-01-10 06:42:06,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1244 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=364, Invalid=2086, Unknown=0, NotChecked=0, Total=2450 [2022-01-10 06:42:06,392 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 2661 mSDsluCounter, 6763 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 7206 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:06,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2661 Valid, 7206 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:42:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2022-01-10 06:42:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2227. [2022-01-10 06:42:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2224 states have (on average 1.0881294964028776) internal successors, (2420), 2225 states have internal predecessors, (2420), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2422 transitions. [2022-01-10 06:42:06,870 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2422 transitions. Word has length 631 [2022-01-10 06:42:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:06,871 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 2422 transitions. [2022-01-10 06:42:06,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.73076923076923) internal successors, (383), 26 states have internal predecessors, (383), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2422 transitions. [2022-01-10 06:42:06,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2022-01-10 06:42:06,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:06,876 INFO L514 BasicCegarLoop]: trace histogram [13, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:06,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:07,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:07,091 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:07,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash -659046380, now seen corresponding path program 1 times [2022-01-10 06:42:07,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:07,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009382508] [2022-01-10 06:42:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:07,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:07,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:07,095 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:07,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:42:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:07,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:42:07,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 352 proven. 48 refuted. 0 times theorem prover too weak. 1116 trivial. 0 not checked. [2022-01-10 06:42:07,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:42:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 352 proven. 48 refuted. 0 times theorem prover too weak. 1116 trivial. 0 not checked. [2022-01-10 06:42:08,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:08,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009382508] [2022-01-10 06:42:08,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009382508] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:42:08,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:42:08,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2022-01-10 06:42:08,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221426827] [2022-01-10 06:42:08,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:42:08,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:42:08,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:42:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:42:08,430 INFO L87 Difference]: Start difference. First operand 2227 states and 2422 transitions. Second operand has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:09,096 INFO L93 Difference]: Finished difference Result 3741 states and 4072 transitions. [2022-01-10 06:42:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:42:09,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 681 [2022-01-10 06:42:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:09,100 INFO L225 Difference]: With dead ends: 3741 [2022-01-10 06:42:09,100 INFO L226 Difference]: Without dead ends: 3004 [2022-01-10 06:42:09,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1360 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:42:09,101 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 1202 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:09,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 3646 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:42:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2022-01-10 06:42:09,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2221. [2022-01-10 06:42:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2218 states have (on average 1.0838593327321913) internal successors, (2404), 2219 states have internal predecessors, (2404), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2406 transitions. [2022-01-10 06:42:09,421 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2406 transitions. Word has length 681 [2022-01-10 06:42:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:09,422 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 2406 transitions. [2022-01-10 06:42:09,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2406 transitions. [2022-01-10 06:42:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-01-10 06:42:09,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:09,427 INFO L514 BasicCegarLoop]: trace histogram [14, 10, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:09,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 06:42:09,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:09,637 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:09,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1976417087, now seen corresponding path program 1 times [2022-01-10 06:42:09,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:09,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528106450] [2022-01-10 06:42:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:09,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:09,639 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:09,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 06:42:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:09,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 06:42:09,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 319 proven. 870 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2022-01-10 06:42:11,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:42:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 35 proven. 1154 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2022-01-10 06:42:13,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528106450] [2022-01-10 06:42:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528106450] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:42:13,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:42:13,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2022-01-10 06:42:13,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593778178] [2022-01-10 06:42:13,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:42:13,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-10 06:42:13,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:13,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-10 06:42:13,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2022-01-10 06:42:13,165 INFO L87 Difference]: Start difference. First operand 2221 states and 2406 transitions. Second operand has 32 states, 32 states have (on average 21.53125) internal successors, (689), 32 states have internal predecessors, (689), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:14,725 INFO L93 Difference]: Finished difference Result 2508 states and 2718 transitions. [2022-01-10 06:42:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-10 06:42:14,726 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 21.53125) internal successors, (689), 32 states have internal predecessors, (689), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 739 [2022-01-10 06:42:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:14,729 INFO L225 Difference]: With dead ends: 2508 [2022-01-10 06:42:14,729 INFO L226 Difference]: Without dead ends: 2505 [2022-01-10 06:42:14,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1517 GetRequests, 1456 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=431, Invalid=3351, Unknown=0, NotChecked=0, Total=3782 [2022-01-10 06:42:14,731 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 3276 mSDsluCounter, 12773 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 13459 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:14,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3276 Valid, 13459 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:42:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2022-01-10 06:42:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2221. [2022-01-10 06:42:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2218 states have (on average 1.0834084761045988) internal successors, (2403), 2219 states have internal predecessors, (2403), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2405 transitions. [2022-01-10 06:42:15,074 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2405 transitions. Word has length 739 [2022-01-10 06:42:15,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:15,075 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 2405 transitions. [2022-01-10 06:42:15,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 21.53125) internal successors, (689), 32 states have internal predecessors, (689), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2405 transitions. [2022-01-10 06:42:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-01-10 06:42:15,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:15,081 INFO L514 BasicCegarLoop]: trace histogram [15, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:15,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 06:42:15,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:15,292 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash -915433764, now seen corresponding path program 1 times [2022-01-10 06:42:15,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:15,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162828423] [2022-01-10 06:42:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:15,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:15,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:15,294 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:15,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 06:42:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:15,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:42:15,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1925 backedges. 593 proven. 212 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2022-01-10 06:42:16,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:42:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1925 backedges. 593 proven. 212 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2022-01-10 06:42:17,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:17,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162828423] [2022-01-10 06:42:17,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162828423] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:42:17,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:42:17,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-01-10 06:42:17,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925203956] [2022-01-10 06:42:17,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:42:17,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:42:17,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:17,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:42:17,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:42:17,103 INFO L87 Difference]: Start difference. First operand 2221 states and 2405 transitions. Second operand has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:17,812 INFO L93 Difference]: Finished difference Result 3337 states and 3621 transitions. [2022-01-10 06:42:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 06:42:17,812 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 789 [2022-01-10 06:42:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:17,815 INFO L225 Difference]: With dead ends: 3337 [2022-01-10 06:42:17,816 INFO L226 Difference]: Without dead ends: 2811 [2022-01-10 06:42:17,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1598 GetRequests, 1575 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-01-10 06:42:17,817 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 1483 mSDsluCounter, 5390 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 6126 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:17,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 6126 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-01-10 06:42:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2217. [2022-01-10 06:42:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 2214 states have (on average 1.0790424570912376) internal successors, (2389), 2215 states have internal predecessors, (2389), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2391 transitions. [2022-01-10 06:42:18,159 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2391 transitions. Word has length 789 [2022-01-10 06:42:18,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:18,160 INFO L470 AbstractCegarLoop]: Abstraction has 2217 states and 2391 transitions. [2022-01-10 06:42:18,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:18,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2391 transitions. [2022-01-10 06:42:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2022-01-10 06:42:18,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:18,166 INFO L514 BasicCegarLoop]: trace histogram [16, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:18,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:18,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:18,377 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:18,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash -564749760, now seen corresponding path program 1 times [2022-01-10 06:42:18,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:18,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994003553] [2022-01-10 06:42:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:18,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:18,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:18,379 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:18,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 06:42:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:18,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 06:42:18,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 422 proven. 1514 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-01-10 06:42:20,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:42:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 40 proven. 1896 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-01-10 06:42:22,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:22,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994003553] [2022-01-10 06:42:22,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994003553] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:42:22,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:42:22,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 38 [2022-01-10 06:42:22,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041645118] [2022-01-10 06:42:22,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:42:22,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-10 06:42:22,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:22,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-10 06:42:22,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1308, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 06:42:22,406 INFO L87 Difference]: Start difference. First operand 2217 states and 2391 transitions. Second operand has 38 states, 38 states have (on average 26.342105263157894) internal successors, (1001), 38 states have internal predecessors, (1001), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:24,595 INFO L93 Difference]: Finished difference Result 2514 states and 2713 transitions. [2022-01-10 06:42:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-10 06:42:24,596 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 26.342105263157894) internal successors, (1001), 38 states have internal predecessors, (1001), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 848 [2022-01-10 06:42:24,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:24,599 INFO L225 Difference]: With dead ends: 2514 [2022-01-10 06:42:24,599 INFO L226 Difference]: Without dead ends: 2511 [2022-01-10 06:42:24,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1743 GetRequests, 1668 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=503, Invalid=4899, Unknown=0, NotChecked=0, Total=5402 [2022-01-10 06:42:24,602 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 3784 mSDsluCounter, 21081 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 22015 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:24,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3784 Valid, 22015 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 06:42:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2022-01-10 06:42:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2217. [2022-01-10 06:42:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 2214 states have (on average 1.0785907859078592) internal successors, (2388), 2215 states have internal predecessors, (2388), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2390 transitions. [2022-01-10 06:42:25,087 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2390 transitions. Word has length 848 [2022-01-10 06:42:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:25,088 INFO L470 AbstractCegarLoop]: Abstraction has 2217 states and 2390 transitions. [2022-01-10 06:42:25,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 26.342105263157894) internal successors, (1001), 38 states have internal predecessors, (1001), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2390 transitions. [2022-01-10 06:42:25,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-01-10 06:42:25,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:25,096 INFO L514 BasicCegarLoop]: trace histogram [17, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:25,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 06:42:25,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:25,302 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:25,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:25,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1919800221, now seen corresponding path program 1 times [2022-01-10 06:42:25,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:25,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224242713] [2022-01-10 06:42:25,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:25,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:25,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:25,307 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:25,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 06:42:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:25,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 06:42:25,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 834 proven. 493 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-01-10 06:42:26,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:42:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 834 proven. 493 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-01-10 06:42:27,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:27,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224242713] [2022-01-10 06:42:27,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224242713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:42:27,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:42:27,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-01-10 06:42:27,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765845720] [2022-01-10 06:42:27,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:42:27,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 06:42:27,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 06:42:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:42:27,743 INFO L87 Difference]: Start difference. First operand 2217 states and 2390 transitions. Second operand has 13 states, 13 states have (on average 38.23076923076923) internal successors, (497), 13 states have internal predecessors, (497), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:28,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:28,557 INFO L93 Difference]: Finished difference Result 2935 states and 3172 transitions. [2022-01-10 06:42:28,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 06:42:28,558 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.23076923076923) internal successors, (497), 13 states have internal predecessors, (497), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 898 [2022-01-10 06:42:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:28,561 INFO L225 Difference]: With dead ends: 2935 [2022-01-10 06:42:28,561 INFO L226 Difference]: Without dead ends: 2620 [2022-01-10 06:42:28,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1820 GetRequests, 1794 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2022-01-10 06:42:28,564 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 1736 mSDsluCounter, 8481 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 9405 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:28,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 9405 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:42:28,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2022-01-10 06:42:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2215. [2022-01-10 06:42:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2212 states have (on average 1.074141048824593) internal successors, (2376), 2213 states have internal predecessors, (2376), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2378 transitions. [2022-01-10 06:42:28,927 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2378 transitions. Word has length 898 [2022-01-10 06:42:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:28,927 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 2378 transitions. [2022-01-10 06:42:28,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.23076923076923) internal successors, (497), 13 states have internal predecessors, (497), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2378 transitions. [2022-01-10 06:42:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2022-01-10 06:42:28,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:28,934 INFO L514 BasicCegarLoop]: trace histogram [18, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:28,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:29,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:29,147 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1153982525, now seen corresponding path program 1 times [2022-01-10 06:42:29,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:29,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489508615] [2022-01-10 06:42:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:29,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:29,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:29,151 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:29,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 06:42:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:29,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1556 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-10 06:42:29,495 INFO L286 TraceCheckSpWp]: Computing forward predicates...