/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/nla-digbench-scaling/divbin_unwindbound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 03:05:46,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 03:05:46,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 03:05:46,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 03:05:46,992 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 03:05:47,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 03:05:47,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 03:05:47,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 03:05:47,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 03:05:47,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 03:05:47,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 03:05:47,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 03:05:47,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 03:05:47,022 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 03:05:47,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 03:05:47,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 03:05:47,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 03:05:47,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 03:05:47,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 03:05:47,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 03:05:47,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:05:47,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 03:05:47,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 03:05:47,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 03:05:47,026 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 03:05:47,026 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 03:05:47,026 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 03:05:47,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 03:05:47,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 03:05:47,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 03:05:47,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 03:05:47,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 03:05:47,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 03:05:47,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 03:05:47,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 03:05:47,223 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 03:05:47,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i [2022-01-10 03:05:47,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df4dc9b0f/6411b7e1b5b34a4b9b06b7d0959e4d05/FLAG895daa991 [2022-01-10 03:05:47,583 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 03:05:47,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i [2022-01-10 03:05:47,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df4dc9b0f/6411b7e1b5b34a4b9b06b7d0959e4d05/FLAG895daa991 [2022-01-10 03:05:48,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df4dc9b0f/6411b7e1b5b34a4b9b06b7d0959e4d05 [2022-01-10 03:05:48,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 03:05:48,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 03:05:48,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 03:05:48,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 03:05:48,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 03:05:48,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740586d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48, skipping insertion in model container [2022-01-10 03:05:48,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 03:05:48,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 03:05:48,149 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2022-01-10 03:05:48,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:05:48,166 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 03:05:48,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2022-01-10 03:05:48,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:05:48,189 INFO L208 MainTranslator]: Completed translation [2022-01-10 03:05:48,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48 WrapperNode [2022-01-10 03:05:48,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 03:05:48,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 03:05:48,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 03:05:48,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 03:05:48,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,222 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-01-10 03:05:48,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 03:05:48,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 03:05:48,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 03:05:48,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 03:05:48,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 03:05:48,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 03:05:48,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 03:05:48,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 03:05:48,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (1/1) ... [2022-01-10 03:05:48,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:05:48,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 03:05:48,280 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 03:05:48,281 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 03:05:48,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 03:05:48,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 03:05:48,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 03:05:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 03:05:48,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 03:05:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 03:05:48,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 03:05:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 03:05:48,350 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 03:05:48,351 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 03:05:48,445 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 03:05:48,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 03:05:48,449 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 03:05:48,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:05:48 BoogieIcfgContainer [2022-01-10 03:05:48,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 03:05:48,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 03:05:48,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 03:05:48,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 03:05:48,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:05:48" (1/3) ... [2022-01-10 03:05:48,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df117df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:05:48, skipping insertion in model container [2022-01-10 03:05:48,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:05:48" (2/3) ... [2022-01-10 03:05:48,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df117df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:05:48, skipping insertion in model container [2022-01-10 03:05:48,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:05:48" (3/3) ... [2022-01-10 03:05:48,458 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.i [2022-01-10 03:05:48,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 03:05:48,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 03:05:48,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 03:05:48,500 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 03:05:48,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 03:05:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 03:05:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 03:05:48,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:05:48,516 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:05:48,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:05:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:05:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1267887399, now seen corresponding path program 1 times [2022-01-10 03:05:48,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:05:48,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478217983] [2022-01-10 03:05:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:05:48,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:05:48,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:05:48,529 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 03:05:48,530 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 03:05:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:05:48,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 03:05:48,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:05:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:05:48,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:05:48,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:05:48,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478217983] [2022-01-10 03:05:48,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478217983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:05:48,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:05:48,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 03:05:48,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446525587] [2022-01-10 03:05:48,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:05:48,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 03:05:48,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:05:48,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 03:05:48,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 03:05:48,712 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 03:05:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:05:48,724 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2022-01-10 03:05:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 03:05:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-01-10 03:05:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:05:48,730 INFO L225 Difference]: With dead ends: 53 [2022-01-10 03:05:48,730 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 03:05:48,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 03:05:48,734 INFO L933 BasicCegarLoop]: 34 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, 34 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 03:05:48,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:05:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 03:05:48,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-10 03:05:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 03:05:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-01-10 03:05:48,756 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 19 [2022-01-10 03:05:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:05:48,756 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-01-10 03:05:48,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 03:05:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-01-10 03:05:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 03:05:48,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:05:48,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:05:48,766 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 03:05:48,959 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 03:05:48,960 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:05:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:05:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1485611193, now seen corresponding path program 1 times [2022-01-10 03:05:48,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:05:48,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370167768] [2022-01-10 03:05:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:05:48,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:05:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:05:48,963 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 03:05:48,964 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 03:05:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:05:49,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 03:05:49,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:05:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:05:49,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:05:49,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:05:49,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370167768] [2022-01-10 03:05:49,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370167768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:05:49,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:05:49,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 03:05:49,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587361867] [2022-01-10 03:05:49,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:05:49,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 03:05:49,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:05:49,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 03:05:49,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 03:05:49,074 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 03:05:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:05:49,091 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-01-10 03:05:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 03:05:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-01-10 03:05:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:05:49,092 INFO L225 Difference]: With dead ends: 38 [2022-01-10 03:05:49,092 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 03:05:49,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 03:05:49,093 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:05:49,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:05:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 03:05:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-10 03:05:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 03:05:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-01-10 03:05:49,098 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 21 [2022-01-10 03:05:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:05:49,099 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-01-10 03:05:49,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 03:05:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-01-10 03:05:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 03:05:49,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:05:49,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:05:49,113 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 03:05:49,300 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 03:05:49,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:05:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:05:49,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1580975129, now seen corresponding path program 1 times [2022-01-10 03:05:49,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:05:49,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738582117] [2022-01-10 03:05:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:05:49,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:05:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:05:49,304 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 03:05:49,305 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 03:05:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:05:49,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 03:05:49,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:05:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 03:05:49,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:05:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:05:50,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:05:50,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738582117] [2022-01-10 03:05:50,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738582117] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 03:05:50,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 03:05:50,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-01-10 03:05:50,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950773537] [2022-01-10 03:05:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:05:50,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 03:05:50,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:05:50,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 03:05:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 03:05:50,246 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 03:05:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:05:50,545 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2022-01-10 03:05:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 03:05:50,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-01-10 03:05:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:05:50,547 INFO L225 Difference]: With dead ends: 38 [2022-01-10 03:05:50,547 INFO L226 Difference]: Without dead ends: 35 [2022-01-10 03:05:50,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-10 03:05:50,549 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 03:05:50,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 03:05:50,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-10 03:05:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-10 03:05:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 03:05:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-01-10 03:05:50,554 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2022-01-10 03:05:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:05:50,554 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-01-10 03:05:50,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 03:05:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-01-10 03:05:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 03:05:50,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:05:50,555 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] [2022-01-10 03:05:50,569 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 03:05:50,763 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 03:05:50,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:05:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:05:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1106421036, now seen corresponding path program 1 times [2022-01-10 03:05:50,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:05:50,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720600058] [2022-01-10 03:05:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:05:50,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:05:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:05:50,766 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 03:05:50,768 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 03:05:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:05:50,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 03:05:50,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:05:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:05:50,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:05:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:05:50,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:05:50,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720600058] [2022-01-10 03:05:50,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720600058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:05:50,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:05:50,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-01-10 03:05:50,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413276507] [2022-01-10 03:05:50,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:05:50,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 03:05:50,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:05:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 03:05:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 03:05:50,941 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 03:05:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:05:50,986 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-01-10 03:05:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 03:05:50,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2022-01-10 03:05:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:05:50,988 INFO L225 Difference]: With dead ends: 49 [2022-01-10 03:05:50,988 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 03:05:50,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 03:05:50,990 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:05:50,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 116 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:05:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 03:05:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-10 03:05:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 03:05:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-01-10 03:05:50,994 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 24 [2022-01-10 03:05:50,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:05:50,994 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-01-10 03:05:50,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 03:05:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-01-10 03:05:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 03:05:50,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:05:50,995 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:05:51,016 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 03:05:51,201 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 03:05:51,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:05:51,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:05:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash -450968108, now seen corresponding path program 1 times [2022-01-10 03:05:51,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:05:51,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364412192] [2022-01-10 03:05:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:05:51,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:05:51,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:05:51,204 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 03:05:51,205 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 03:05:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:05:51,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 03:05:51,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:05:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:05:51,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:05:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:05:51,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:05:51,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364412192] [2022-01-10 03:05:51,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364412192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:05:51,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:05:51,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-01-10 03:05:51,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150951384] [2022-01-10 03:05:51,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:05:51,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 03:05:51,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:05:51,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 03:05:51,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 03:05:51,403 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 03:05:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:05:51,626 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2022-01-10 03:05:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 03:05:51,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2022-01-10 03:05:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:05:51,629 INFO L225 Difference]: With dead ends: 90 [2022-01-10 03:05:51,639 INFO L226 Difference]: Without dead ends: 72 [2022-01-10 03:05:51,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-01-10 03:05:51,640 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 88 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 03:05:51,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 188 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 03:05:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-10 03:05:51,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2022-01-10 03:05:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 46 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 03:05:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-01-10 03:05:51,648 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2022-01-10 03:05:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:05:51,648 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-01-10 03:05:51,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 03:05:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-01-10 03:05:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 03:05:51,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:05:51,649 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:05:51,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 03:05:51,857 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 03:05:51,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:05:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:05:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash -452755568, now seen corresponding path program 1 times [2022-01-10 03:05:51,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:05:51,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160515009] [2022-01-10 03:05:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:05:51,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:05:51,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:05:51,862 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 03:05:51,862 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 03:05:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:05:51,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 03:05:51,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:05:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 03:05:51,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:05:51,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:05:51,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160515009] [2022-01-10 03:05:51,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160515009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:05:51,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:05:51,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 03:05:51,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160728613] [2022-01-10 03:05:51,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:05:51,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 03:05:51,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:05:51,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 03:05:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 03:05:51,971 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 03:05:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:05:52,044 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2022-01-10 03:05:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 03:05:52,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-01-10 03:05:52,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:05:52,045 INFO L225 Difference]: With dead ends: 72 [2022-01-10 03:05:52,045 INFO L226 Difference]: Without dead ends: 62 [2022-01-10 03:05:52,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 03:05:52,046 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 03:05:52,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 85 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 03:05:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-10 03:05:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-01-10 03:05:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.16) internal successors, (58), 51 states have internal predecessors, (58), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 03:05:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-01-10 03:05:52,052 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 25 [2022-01-10 03:05:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:05:52,052 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-01-10 03:05:52,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 03:05:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-01-10 03:05:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 03:05:52,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:05:52,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:05:52,065 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 03:05:52,260 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 03:05:52,260 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:05:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:05:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash -793153283, now seen corresponding path program 1 times [2022-01-10 03:05:52,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:05:52,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120774035] [2022-01-10 03:05:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:05:52,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:05:52,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:05:52,262 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 03:05:52,264 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 03:05:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:05:52,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 03:05:52,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:05:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 03:05:52,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:05:52,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:05:52,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120774035] [2022-01-10 03:05:52,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120774035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:05:52,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:05:52,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 03:05:52,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298059613] [2022-01-10 03:05:52,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:05:52,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 03:05:52,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:05:52,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 03:05:52,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 03:05:52,354 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 03:05:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:05:52,366 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2022-01-10 03:05:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 03:05:52,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-01-10 03:05:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:05:52,367 INFO L225 Difference]: With dead ends: 65 [2022-01-10 03:05:52,367 INFO L226 Difference]: Without dead ends: 49 [2022-01-10 03:05:52,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 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 03:05:52,368 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:05:52,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:05:52,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-10 03:05:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-01-10 03:05:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 40 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-10 03:05:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-01-10 03:05:52,372 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 31 [2022-01-10 03:05:52,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:05:52,372 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-01-10 03:05:52,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 03:05:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-01-10 03:05:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 03:05:52,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:05:52,373 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 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 03:05:52,380 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 03:05:52,579 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 03:05:52,580 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:05:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:05:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash -417709604, now seen corresponding path program 1 times [2022-01-10 03:05:52,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:05:52,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788309049] [2022-01-10 03:05:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:05:52,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:05:52,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:05:52,582 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 03:05:52,582 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 03:05:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:05:52,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 03:05:52,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:05:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 03:05:52,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:05:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 03:05:52,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:05:52,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788309049] [2022-01-10 03:05:52,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788309049] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:05:52,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:05:52,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-01-10 03:05:52,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853625366] [2022-01-10 03:05:52,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:05:52,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 03:05:52,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:05:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 03:05:52,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 03:05:52,833 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-10 03:05:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:05:52,873 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-01-10 03:05:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 03:05:52,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2022-01-10 03:05:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:05:52,874 INFO L225 Difference]: With dead ends: 48 [2022-01-10 03:05:52,874 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 03:05:52,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-10 03:05:52,874 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:05:52,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 56 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:05:52,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 03:05:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 03:05:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 03:05:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 03:05:52,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2022-01-10 03:05:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:05:52,875 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 03:05:52,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-10 03:05:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 03:05:52,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 03:05:52,877 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 03:05:52,886 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 03:05:53,084 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 03:05:53,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 03:05:53,367 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 03:05:53,367 INFO L854 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (= ~counter~0 (_ bv0 32)) [2022-01-10 03:05:53,367 INFO L854 garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (= ~counter~0 (_ bv0 32)) [2022-01-10 03:05:53,367 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2022-01-10 03:05:53,367 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 49) no Hoare annotation was computed. [2022-01-10 03:05:53,367 INFO L854 garLoopResultBuilder]: At program point L40-2(lines 40 49) the Hoare annotation is: (= (bvadd |ULTIMATE.start_main_~r~0#1| (bvmul |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~b~0#1|)) |ULTIMATE.start_main_~A~0#1|) [2022-01-10 03:05:53,367 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L854 garLoopResultBuilder]: At program point L36-3(lines 36 39) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| (_ bv0 32)))) (or (and (= ~counter~0 (_ bv1 32)) .cse0 .cse1) (and .cse1 (= ~counter~0 (_ bv0 32)) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~B~0#1|) (= (bvadd |ULTIMATE.start_main_~r~0#1| (bvmul |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~b~0#1|)) |ULTIMATE.start_main_~A~0#1|)) (and (= (_ bv2 32) ~counter~0) .cse0 .cse1))) [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L861 garLoopResultBuilder]: At program point L51(lines 26 52) the Hoare annotation is: true [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (= (_ bv2 32) ~counter~0) (= |ULTIMATE.start_main_~q~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~B~0#1|) (= (bvadd |ULTIMATE.start_main_~r~0#1| (bvmul |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~b~0#1|)) |ULTIMATE.start_main_~A~0#1|)) [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 40 49) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 15 17) the Hoare annotation is: true [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L858 garLoopResultBuilder]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2022-01-10 03:05:53,368 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 18 24) the Hoare annotation is: true [2022-01-10 03:05:53,369 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2022-01-10 03:05:53,369 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2022-01-10 03:05:53,369 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2022-01-10 03:05:53,369 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-01-10 03:05:53,371 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:05:53,372 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 03:05:53,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:05:53 BoogieIcfgContainer [2022-01-10 03:05:53,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 03:05:53,382 INFO L158 Benchmark]: Toolchain (without parser) took 5366.40ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 149.9MB in the beginning and 163.6MB in the end (delta: -13.7MB). Peak memory consumption was 28.1MB. Max. memory is 8.0GB. [2022-01-10 03:05:53,382 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 03:05:53,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.73ms. Allocated memory is still 201.3MB. Free memory was 149.6MB in the beginning and 175.7MB in the end (delta: -26.1MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2022-01-10 03:05:53,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.42ms. Allocated memory is still 201.3MB. Free memory was 175.7MB in the beginning and 174.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 03:05:53,383 INFO L158 Benchmark]: Boogie Preprocessor took 26.17ms. Allocated memory is still 201.3MB. Free memory was 174.2MB in the beginning and 172.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 03:05:53,383 INFO L158 Benchmark]: RCFGBuilder took 200.81ms. Allocated memory is still 201.3MB. Free memory was 172.6MB in the beginning and 162.6MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 03:05:53,383 INFO L158 Benchmark]: TraceAbstraction took 4930.15ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 162.1MB in the beginning and 163.6MB in the end (delta: -1.5MB). Peak memory consumption was 39.9MB. Max. memory is 8.0GB. [2022-01-10 03:05:53,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.73ms. Allocated memory is still 201.3MB. Free memory was 149.6MB in the beginning and 175.7MB in the end (delta: -26.1MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.42ms. Allocated memory is still 201.3MB. Free memory was 175.7MB in the beginning and 174.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.17ms. Allocated memory is still 201.3MB. Free memory was 174.2MB in the beginning and 172.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 200.81ms. Allocated memory is still 201.3MB. Free memory was 172.6MB in the beginning and 162.6MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 4930.15ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 162.1MB in the beginning and 163.6MB in the end (delta: -1.5MB). Peak memory consumption was 39.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 692 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 481 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 205 IncrementalHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 211 mSDtfsCounter, 205 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=6, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 25 PreInvPairs, 34 NumberOfFragments, 71 HoareAnnotationTreeSize, 25 FomulaSimplifications, 50 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 79 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 798 SizeOfPredicates, 9 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 128/155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((counter == 1bv32 && r == A) && q == 0bv32) || (((q == 0bv32 && counter == 0bv32) && b == B) && ~bvadd16(r, ~bvmul32(q, b)) == A)) || ((2bv32 == counter && r == A) && q == 0bv32) RESULT: Ultimate proved your program to be correct! [2022-01-10 03:05:53,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...