/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/eca-rers2012/Problem10_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:52:44,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:52:44,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:52:44,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:52:44,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:52:44,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:52:44,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:52:44,277 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 04:52:44,301 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:52:44,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:52:44,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:52:44,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:52:44,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:52:44,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:52:44,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:52:44,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:52:44,304 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:52:44,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:52:44,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:52:44,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:52:44,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:52:44,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:52:44,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:52:44,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:52:44,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:52:44,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:52:44,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:52:44,306 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:52:44,306 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:52:44,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:52:44,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:52:44,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:52:44,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:52:44,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:52:44,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:52:44,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:52:44,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:52:44,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:52:44,518 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:52:44,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2022-01-10 04:52:44,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf582253/24967df14fcf4e0fb2ed8c3e2d44d5bc/FLAG84e132e0f [2022-01-10 04:52:45,030 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:52:45,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2022-01-10 04:52:45,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf582253/24967df14fcf4e0fb2ed8c3e2d44d5bc/FLAG84e132e0f [2022-01-10 04:52:45,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf582253/24967df14fcf4e0fb2ed8c3e2d44d5bc [2022-01-10 04:52:45,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:52:45,404 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:52:45,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:52:45,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:52:45,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:52:45,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d7281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45, skipping insertion in model container [2022-01-10 04:52:45,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:52:45,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:52:45,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c[6766,6779] [2022-01-10 04:52:45,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:52:45,761 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:52:45,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c[6766,6779] [2022-01-10 04:52:45,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:52:45,862 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:52:45,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45 WrapperNode [2022-01-10 04:52:45,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:52:45,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:52:45,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:52:45,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:52:45,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,934 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 595 [2022-01-10 04:52:45,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:52:45,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:52:45,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:52:45,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:52:45,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:52:45,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:52:45,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:52:45,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:52:45,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (1/1) ... [2022-01-10 04:52:45,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:52:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:52:46,022 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 04:52:46,027 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 04:52:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:52:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:52:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:52:46,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:52:46,100 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:52:46,101 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:52:48,152 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:52:48,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:52:48,160 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:52:48,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:52:48 BoogieIcfgContainer [2022-01-10 04:52:48,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:52:48,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:52:48,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:52:48,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:52:48,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:52:45" (1/3) ... [2022-01-10 04:52:48,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c534b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:52:48, skipping insertion in model container [2022-01-10 04:52:48,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:52:45" (2/3) ... [2022-01-10 04:52:48,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c534b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:52:48, skipping insertion in model container [2022-01-10 04:52:48,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:52:48" (3/3) ... [2022-01-10 04:52:48,169 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2022-01-10 04:52:48,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:52:48,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:52:48,209 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:52:48,214 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 04:52:48,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:52:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 04:52:48,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:52:48,235 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] [2022-01-10 04:52:48,236 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:52:48,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:52:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2022-01-10 04:52:48,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:52:48,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382374462] [2022-01-10 04:52:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:52:48,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:52:48,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:52:48,254 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 04:52:48,259 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 04:52:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:52:48,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:52:48,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:52:48,603 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 04:52:48,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:52:48,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:52:48,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382374462] [2022-01-10 04:52:48,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382374462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:52:48,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:52:48,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:52:48,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643390877] [2022-01-10 04:52:48,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:52:48,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:52:48,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:52:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:52:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:52:48,640 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:52:51,463 INFO L93 Difference]: Finished difference Result 567 states and 981 transitions. [2022-01-10 04:52:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:52:51,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 04:52:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:52:51,474 INFO L225 Difference]: With dead ends: 567 [2022-01-10 04:52:51,475 INFO L226 Difference]: Without dead ends: 282 [2022-01-10 04:52:51,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 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 04:52:51,481 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 103 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:52:51,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 103 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 04:52:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-10 04:52:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-01-10 04:52:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.395017793594306) internal successors, (392), 281 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 392 transitions. [2022-01-10 04:52:51,517 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 392 transitions. Word has length 59 [2022-01-10 04:52:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:52:51,518 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 392 transitions. [2022-01-10 04:52:51,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 392 transitions. [2022-01-10 04:52:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 04:52:51,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:52:51,521 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:52:51,530 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 04:52:51,727 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 04:52:51,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:52:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:52:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash 362466036, now seen corresponding path program 1 times [2022-01-10 04:52:51,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:52:51,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918221082] [2022-01-10 04:52:51,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:52:51,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:52:51,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:52:51,733 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 04:52:51,734 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 04:52:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:52:51,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:52:51,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:52:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:52:52,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:52:52,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:52:52,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918221082] [2022-01-10 04:52:52,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918221082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:52:52,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:52:52,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:52:52,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056360281] [2022-01-10 04:52:52,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:52:52,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:52:52,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:52:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:52:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:52:52,014 INFO L87 Difference]: Start difference. First operand 282 states and 392 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:52:54,569 INFO L93 Difference]: Finished difference Result 562 states and 823 transitions. [2022-01-10 04:52:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:52:54,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 04:52:54,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:52:54,577 INFO L225 Difference]: With dead ends: 562 [2022-01-10 04:52:54,577 INFO L226 Difference]: Without dead ends: 421 [2022-01-10 04:52:54,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 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 04:52:54,582 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 83 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:52:54,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 220 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 04:52:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-10 04:52:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2022-01-10 04:52:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.2880952380952382) internal successors, (541), 420 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 541 transitions. [2022-01-10 04:52:54,611 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 541 transitions. Word has length 125 [2022-01-10 04:52:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:52:54,611 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 541 transitions. [2022-01-10 04:52:54,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 541 transitions. [2022-01-10 04:52:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 04:52:54,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:52:54,615 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:52:54,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 04:52:54,823 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 04:52:54,824 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:52:54,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:52:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash 362712702, now seen corresponding path program 1 times [2022-01-10 04:52:54,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:52:54,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640505012] [2022-01-10 04:52:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:52:54,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:52:54,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:52:54,827 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 04:52:54,828 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 04:52:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:52:54,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:52:54,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:52:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:52:55,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:52:55,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:52:55,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640505012] [2022-01-10 04:52:55,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640505012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:52:55,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:52:55,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:52:55,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105355179] [2022-01-10 04:52:55,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:52:55,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:52:55,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:52:55,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:52:55,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:52:55,098 INFO L87 Difference]: Start difference. First operand 421 states and 541 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:52:57,639 INFO L93 Difference]: Finished difference Result 979 states and 1295 transitions. [2022-01-10 04:52:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:52:57,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-01-10 04:52:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:52:57,645 INFO L225 Difference]: With dead ends: 979 [2022-01-10 04:52:57,645 INFO L226 Difference]: Without dead ends: 560 [2022-01-10 04:52:57,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 04:52:57,647 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:52:57,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 76 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 04:52:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-10 04:52:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-01-10 04:52:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.2093023255813953) internal successors, (676), 559 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 676 transitions. [2022-01-10 04:52:57,658 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 676 transitions. Word has length 129 [2022-01-10 04:52:57,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:52:57,659 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 676 transitions. [2022-01-10 04:52:57,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:52:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 676 transitions. [2022-01-10 04:52:57,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 04:52:57,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:52:57,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:52:57,677 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 04:52:57,872 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 04:52:57,873 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:52:57,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:52:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash -775661752, now seen corresponding path program 1 times [2022-01-10 04:52:57,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:52:57,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822046802] [2022-01-10 04:52:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:52:57,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:52:57,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:52:57,876 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 04:52:57,878 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 04:52:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:52:57,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:52:57,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:52:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:52:58,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:53:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:01,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:01,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822046802] [2022-01-10 04:53:01,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822046802] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 04:53:01,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 04:53:01,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 04:53:01,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564403554] [2022-01-10 04:53:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:01,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:53:01,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:53:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 04:53:01,144 INFO L87 Difference]: Start difference. First operand 560 states and 676 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:29,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 04:53:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:32,717 INFO L93 Difference]: Finished difference Result 1415 states and 1744 transitions. [2022-01-10 04:53:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:53:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-01-10 04:53:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:32,724 INFO L225 Difference]: With dead ends: 1415 [2022-01-10 04:53:32,724 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 04:53:32,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 04:53:32,726 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 77 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:32,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 17 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 31.5s Time] [2022-01-10 04:53:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 04:53:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 560. [2022-01-10 04:53:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.2039355992844365) internal successors, (673), 559 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 673 transitions. [2022-01-10 04:53:32,740 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 673 transitions. Word has length 134 [2022-01-10 04:53:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:32,740 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 673 transitions. [2022-01-10 04:53:32,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 673 transitions. [2022-01-10 04:53:32,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 04:53:32,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:32,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:53:32,764 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 04:53:32,964 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 04:53:32,964 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash 93687206, now seen corresponding path program 1 times [2022-01-10 04:53:32,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247936321] [2022-01-10 04:53:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:32,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:32,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:32,967 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 04:53:32,968 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 04:53:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:33,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:53:33,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:33,309 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:33,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:53:33,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:33,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247936321] [2022-01-10 04:53:33,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247936321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:53:33,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:53:33,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:53:33,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372926136] [2022-01-10 04:53:33,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:33,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:53:33,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:53:33,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:33,311 INFO L87 Difference]: Start difference. First operand 560 states and 673 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:35,779 INFO L93 Difference]: Finished difference Result 1396 states and 1718 transitions. [2022-01-10 04:53:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:53:35,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-01-10 04:53:35,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:35,782 INFO L225 Difference]: With dead ends: 1396 [2022-01-10 04:53:35,782 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 04:53:35,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 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 04:53:35,783 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 89 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:35,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 36 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 04:53:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 04:53:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 838. [2022-01-10 04:53:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.1995221027479093) internal successors, (1004), 837 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1004 transitions. [2022-01-10 04:53:35,795 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1004 transitions. Word has length 146 [2022-01-10 04:53:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:35,795 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1004 transitions. [2022-01-10 04:53:35,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1004 transitions. [2022-01-10 04:53:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 04:53:35,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:35,797 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 04:53:35,812 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 04:53:36,006 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 04:53:36,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1310250032, now seen corresponding path program 1 times [2022-01-10 04:53:36,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:36,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580423742] [2022-01-10 04:53:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:36,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:36,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:36,010 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 04:53:36,010 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 04:53:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:36,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:53:36,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 84 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:37,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:53:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-01-10 04:53:38,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580423742] [2022-01-10 04:53:38,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580423742] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 04:53:38,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 04:53:38,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 04:53:38,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439930917] [2022-01-10 04:53:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:38,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:53:38,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:53:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:53:38,646 INFO L87 Difference]: Start difference. First operand 838 states and 1004 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:40,347 INFO L93 Difference]: Finished difference Result 1550 states and 1878 transitions. [2022-01-10 04:53:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:53:40,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2022-01-10 04:53:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:40,350 INFO L225 Difference]: With dead ends: 1550 [2022-01-10 04:53:40,350 INFO L226 Difference]: Without dead ends: 838 [2022-01-10 04:53:40,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:53:40,363 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 107 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:40,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 14 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 04:53:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-01-10 04:53:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2022-01-10 04:53:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.1959378733572281) internal successors, (1001), 837 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1001 transitions. [2022-01-10 04:53:40,384 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1001 transitions. Word has length 233 [2022-01-10 04:53:40,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:40,385 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1001 transitions. [2022-01-10 04:53:40,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1001 transitions. [2022-01-10 04:53:40,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-10 04:53:40,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:40,387 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:40,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 04:53:40,593 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 04:53:40,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:40,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:40,594 INFO L85 PathProgramCache]: Analyzing trace with hash -931510214, now seen corresponding path program 1 times [2022-01-10 04:53:40,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:40,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700597084] [2022-01-10 04:53:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:40,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:40,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:40,596 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 04:53:40,597 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 04:53:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:40,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:53:40,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 04:53:40,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:53:40,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:53:40,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700597084] [2022-01-10 04:53:40,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700597084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:53:40,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:53:40,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:53:40,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866408398] [2022-01-10 04:53:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:53:40,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:53:40,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:53:40,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:53:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:53:40,966 INFO L87 Difference]: Start difference. First operand 838 states and 1001 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:53:43,081 INFO L93 Difference]: Finished difference Result 1813 states and 2257 transitions. [2022-01-10 04:53:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:53:43,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2022-01-10 04:53:43,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:53:43,085 INFO L225 Difference]: With dead ends: 1813 [2022-01-10 04:53:43,085 INFO L226 Difference]: Without dead ends: 1116 [2022-01-10 04:53:43,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 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 04:53:43,086 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 95 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:53:43,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 189 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 04:53:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-10 04:53:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1116. [2022-01-10 04:53:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.1919282511210763) internal successors, (1329), 1115 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1329 transitions. [2022-01-10 04:53:43,099 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1329 transitions. Word has length 238 [2022-01-10 04:53:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:53:43,100 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1329 transitions. [2022-01-10 04:53:43,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:53:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1329 transitions. [2022-01-10 04:53:43,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-01-10 04:53:43,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:53:43,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:43,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 04:53:43,309 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 04:53:43,310 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:53:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:53:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1062657204, now seen corresponding path program 1 times [2022-01-10 04:53:43,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:53:43,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243597739] [2022-01-10 04:53:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:53:43,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:53:43,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:53:43,313 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 04:53:43,315 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 04:53:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:53:43,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:53:43,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:53:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 113 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:53:43,854 INFO L328 TraceCheckSpWp]: Computing backward predicates...