/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/loop-acceleration/array_3-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:43:38,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:43:38,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:43:38,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:43:38,345 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 02:43:38,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:43:38,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:43:38,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:43:38,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:43:38,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:43:38,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:43:38,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:43:38,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:43:38,373 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:43:38,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:43:38,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:43:38,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:43:38,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:43:38,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:43:38,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:43:38,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:43:38,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 02:43:38,374 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 02:43:38,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:43:38,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:43:38,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:43:38,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:43:38,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:43:38,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:43:38,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:43:38,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:43:38,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:43:38,375 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 02:43:38,376 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 02:43:38,376 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:43:38,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:43:38,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:43:38,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 02:43:38,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:43:38,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:43:38,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:43:38,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:43:38,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:43:38,605 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:43:38,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-2.i [2022-01-10 02:43:38,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a23d2e9/91bf0622c34a40abbfb28b933a078dbe/FLAG9a3de2ec8 [2022-01-10 02:43:39,042 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:43:39,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i [2022-01-10 02:43:39,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a23d2e9/91bf0622c34a40abbfb28b933a078dbe/FLAG9a3de2ec8 [2022-01-10 02:43:39,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a23d2e9/91bf0622c34a40abbfb28b933a078dbe [2022-01-10 02:43:39,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:43:39,064 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:43:39,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:43:39,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:43:39,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:43:39,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6580a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39, skipping insertion in model container [2022-01-10 02:43:39,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:43:39,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:43:39,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i[809,822] [2022-01-10 02:43:39,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:43:39,291 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:43:39,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i[809,822] [2022-01-10 02:43:39,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:43:39,322 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:43:39,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39 WrapperNode [2022-01-10 02:43:39,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:43:39,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:43:39,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:43:39,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:43:39,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,349 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2022-01-10 02:43:39,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:43:39,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:43:39,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:43:39,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:43:39,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:43:39,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:43:39,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:43:39,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:43:39,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (1/1) ... [2022-01-10 02:43:39,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:43:39,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:43:39,421 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 02:43:39,437 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 02:43:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:43:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 02:43:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 02:43:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 02:43:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:43:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:43:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 02:43:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 02:43:39,514 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:43:39,515 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:43:39,611 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:43:39,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:43:39,622 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:43:39,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:43:39 BoogieIcfgContainer [2022-01-10 02:43:39,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:43:39,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:43:39,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:43:39,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:43:39,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:43:39" (1/3) ... [2022-01-10 02:43:39,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2449c633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:43:39, skipping insertion in model container [2022-01-10 02:43:39,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:43:39" (2/3) ... [2022-01-10 02:43:39,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2449c633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:43:39, skipping insertion in model container [2022-01-10 02:43:39,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:43:39" (3/3) ... [2022-01-10 02:43:39,651 INFO L111 eAbstractionObserver]: Analyzing ICFG array_3-2.i [2022-01-10 02:43:39,666 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:43:39,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 02:43:39,700 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:43:39,705 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 02:43:39,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 02:43:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 02:43:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 02:43:39,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:39,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:39,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash 212441967, now seen corresponding path program 1 times [2022-01-10 02:43:39,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:39,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830481238] [2022-01-10 02:43:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:43:39,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:39,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:39,742 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 02:43:39,746 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 02:43:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:43:39,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 02:43:39,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:43:39,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:43:39,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:39,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830481238] [2022-01-10 02:43:39,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830481238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:43:39,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:43:39,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:43:39,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128870667] [2022-01-10 02:43:39,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:43:39,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 02:43:39,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:39,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 02:43:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 02:43:39,878 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 02:43:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:43:39,888 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-01-10 02:43:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 02:43:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-10 02:43:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:43:39,895 INFO L225 Difference]: With dead ends: 30 [2022-01-10 02:43:39,895 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 02:43:39,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 02:43:39,902 INFO L933 BasicCegarLoop]: 19 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, 19 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 02:43:39,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:43:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 02:43:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 02:43:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 02:43:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-01-10 02:43:39,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2022-01-10 02:43:39,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:43:39,923 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-01-10 02:43:39,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 02:43:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-01-10 02:43:39,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 02:43:39,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:39,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:39,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 02:43:40,131 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 02:43:40,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1850569592, now seen corresponding path program 1 times [2022-01-10 02:43:40,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:40,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146252792] [2022-01-10 02:43:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:43:40,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:40,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:40,138 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 02:43:40,140 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 02:43:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:43:40,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 02:43:40,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:43:40,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:43:40,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:40,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146252792] [2022-01-10 02:43:40,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146252792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:43:40,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:43:40,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:43:40,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093982212] [2022-01-10 02:43:40,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:43:40,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:43:40,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:40,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:43:40,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:43:40,219 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 02:43:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:43:40,243 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-01-10 02:43:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:43:40,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 02:43:40,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:43:40,244 INFO L225 Difference]: With dead ends: 32 [2022-01-10 02:43:40,244 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 02:43:40,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 02:43:40,246 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:43:40,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:43:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 02:43:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2022-01-10 02:43:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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 02:43:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-01-10 02:43:40,250 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-01-10 02:43:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:43:40,250 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-01-10 02:43:40,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 02:43:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-01-10 02:43:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 02:43:40,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:40,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:40,260 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 02:43:40,456 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 02:43:40,456 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1195372026, now seen corresponding path program 1 times [2022-01-10 02:43:40,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:40,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739771924] [2022-01-10 02:43:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:43:40,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:40,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:40,459 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 02:43:40,460 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 02:43:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:43:40,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 02:43:40,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:43:40,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:43:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:43:40,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:40,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739771924] [2022-01-10 02:43:40,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739771924] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:43:40,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:43:40,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 02:43:40,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437030577] [2022-01-10 02:43:40,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:43:40,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:43:40,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:40,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:43:40,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:43:40,610 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 02:43:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:43:40,714 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-01-10 02:43:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:43:40,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 02:43:40,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:43:40,717 INFO L225 Difference]: With dead ends: 61 [2022-01-10 02:43:40,717 INFO L226 Difference]: Without dead ends: 52 [2022-01-10 02:43:40,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:43:40,718 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:43:40,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 38 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:43:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-10 02:43:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 20. [2022-01-10 02:43:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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 02:43:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-01-10 02:43:40,725 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2022-01-10 02:43:40,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:43:40,725 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-01-10 02:43:40,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 02:43:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-01-10 02:43:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 02:43:40,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:40,726 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:40,751 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 02:43:40,932 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 02:43:40,933 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash -328971648, now seen corresponding path program 2 times [2022-01-10 02:43:40,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:40,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083157952] [2022-01-10 02:43:40,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 02:43:40,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:40,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:40,936 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 02:43:40,936 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 02:43:40,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 02:43:40,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 02:43:40,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 02:43:40,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:43:41,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:43:41,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:41,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083157952] [2022-01-10 02:43:41,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083157952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:43:41,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:43:41,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:43:41,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724568527] [2022-01-10 02:43:41,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:43:41,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:43:41,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:41,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:43:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:43:41,045 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 02:43:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:43:41,075 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-01-10 02:43:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:43:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 02:43:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:43:41,076 INFO L225 Difference]: With dead ends: 28 [2022-01-10 02:43:41,076 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 02:43:41,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:43:41,078 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:43:41,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:43:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 02:43:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-01-10 02:43:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 02:43:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-10 02:43:41,082 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2022-01-10 02:43:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:43:41,082 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-10 02:43:41,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 02:43:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-10 02:43:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 02:43:41,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:41,083 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:41,092 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 02:43:41,295 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 02:43:41,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash 222661349, now seen corresponding path program 1 times [2022-01-10 02:43:41,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:41,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357433601] [2022-01-10 02:43:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:43:41,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:41,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:41,297 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 02:43:41,298 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 02:43:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:43:41,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:43:41,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 02:43:41,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:43:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 02:43:41,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:41,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357433601] [2022-01-10 02:43:41,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357433601] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:43:41,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:43:41,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 02:43:41,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105548415] [2022-01-10 02:43:41,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:43:41,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 02:43:41,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:41,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 02:43:41,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:43:41,535 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 02:43:41,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:43:41,836 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2022-01-10 02:43:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:43:41,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 02:43:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:43:41,837 INFO L225 Difference]: With dead ends: 120 [2022-01-10 02:43:41,837 INFO L226 Difference]: Without dead ends: 108 [2022-01-10 02:43:41,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:43:41,838 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 207 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:43:41,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 145 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:43:41,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-10 02:43:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 35. [2022-01-10 02:43:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 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 02:43:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-01-10 02:43:41,843 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 22 [2022-01-10 02:43:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:43:41,843 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-01-10 02:43:41,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 02:43:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-01-10 02:43:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 02:43:41,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:41,844 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:41,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 02:43:42,050 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 02:43:42,050 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:42,051 INFO L85 PathProgramCache]: Analyzing trace with hash -684521359, now seen corresponding path program 2 times [2022-01-10 02:43:42,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:42,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622611979] [2022-01-10 02:43:42,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 02:43:42,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:42,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:42,052 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 02:43:42,053 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 02:43:42,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 02:43:42,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 02:43:42,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 02:43:42,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 02:43:42,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:43:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 02:43:42,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:42,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622611979] [2022-01-10 02:43:42,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622611979] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:43:42,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:43:42,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-01-10 02:43:42,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145392027] [2022-01-10 02:43:42,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:43:42,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 02:43:42,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 02:43:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-01-10 02:43:42,546 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 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 02:43:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:43:43,738 INFO L93 Difference]: Finished difference Result 240 states and 278 transitions. [2022-01-10 02:43:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-10 02:43:43,739 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-10 02:43:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:43:43,740 INFO L225 Difference]: With dead ends: 240 [2022-01-10 02:43:43,741 INFO L226 Difference]: Without dead ends: 228 [2022-01-10 02:43:43,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 02:43:43,742 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 1251 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:43:43,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 642 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:43:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-01-10 02:43:43,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 59. [2022-01-10 02:43:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 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 02:43:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2022-01-10 02:43:43,750 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 34 [2022-01-10 02:43:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:43:43,751 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2022-01-10 02:43:43,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 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 02:43:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2022-01-10 02:43:43,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 02:43:43,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:43,752 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:43,763 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 02:43:43,961 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 02:43:43,962 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2107298423, now seen corresponding path program 3 times [2022-01-10 02:43:43,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:43,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448659402] [2022-01-10 02:43:43,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 02:43:43,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:43,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:43,965 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 02:43:43,968 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 02:43:44,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-10 02:43:44,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 02:43:44,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:43:44,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-01-10 02:43:44,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:43:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-01-10 02:43:44,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:44,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448659402] [2022-01-10 02:43:44,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448659402] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:43:44,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:43:44,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2022-01-10 02:43:44,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571054478] [2022-01-10 02:43:44,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:43:44,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 02:43:44,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 02:43:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:43:44,329 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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 02:43:44,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:43:44,458 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2022-01-10 02:43:44,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:43:44,459 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 02:43:44,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:43:44,460 INFO L225 Difference]: With dead ends: 87 [2022-01-10 02:43:44,460 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 02:43:44,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:43:44,460 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 61 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:43:44,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 40 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:43:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 02:43:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-01-10 02:43:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 70 states have internal predecessors, (76), 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 02:43:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2022-01-10 02:43:44,466 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 58 [2022-01-10 02:43:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:43:44,466 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2022-01-10 02:43:44,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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 02:43:44,466 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2022-01-10 02:43:44,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 02:43:44,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:44,467 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:44,489 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 02:43:44,679 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 02:43:44,680 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash -753485384, now seen corresponding path program 4 times [2022-01-10 02:43:44,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:44,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757831855] [2022-01-10 02:43:44,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 02:43:44,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:44,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:44,685 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 02:43:44,686 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 02:43:44,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 02:43:44,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 02:43:44,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 02:43:44,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 02:43:45,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:43:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 02:43:46,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:46,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757831855] [2022-01-10 02:43:46,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757831855] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:43:46,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:43:46,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-01-10 02:43:46,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905090467] [2022-01-10 02:43:46,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:43:46,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-10 02:43:46,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:46,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-10 02:43:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 02:43:46,201 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 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 02:43:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:43:51,533 INFO L93 Difference]: Finished difference Result 480 states and 555 transitions. [2022-01-10 02:43:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-10 02:43:51,533 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 02:43:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:43:51,535 INFO L225 Difference]: With dead ends: 480 [2022-01-10 02:43:51,535 INFO L226 Difference]: Without dead ends: 456 [2022-01-10 02:43:51,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-01-10 02:43:51,537 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 3929 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 3289 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 3289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:43:51,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3929 Valid, 2489 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 3289 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:43:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-01-10 02:43:51,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 119. [2022-01-10 02:43:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0508474576271187) internal successors, (124), 118 states have internal predecessors, (124), 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 02:43:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2022-01-10 02:43:51,554 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 70 [2022-01-10 02:43:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:43:51,554 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2022-01-10 02:43:51,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 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 02:43:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2022-01-10 02:43:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 02:43:51,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:43:51,556 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:43:51,575 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 02:43:51,756 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 02:43:51,757 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:43:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:43:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1711399912, now seen corresponding path program 5 times [2022-01-10 02:43:51,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:43:51,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051478457] [2022-01-10 02:43:51,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-10 02:43:51,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:43:51,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:43:51,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:43:51,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 02:43:52,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-01-10 02:43:52,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 02:43:52,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-10 02:43:52,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:43:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 02:43:54,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:43:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2152 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 02:43:59,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:43:59,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051478457] [2022-01-10 02:43:59,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051478457] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:43:59,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:43:59,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 97 [2022-01-10 02:43:59,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789059641] [2022-01-10 02:43:59,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:43:59,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-10 02:43:59,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:43:59,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-10 02:43:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2448, Invalid=6864, Unknown=0, NotChecked=0, Total=9312 [2022-01-10 02:43:59,458 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 97 states have internal predecessors, (198), 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 02:44:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:44:43,397 INFO L93 Difference]: Finished difference Result 960 states and 1107 transitions. [2022-01-10 02:44:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-10 02:44:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 97 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-01-10 02:44:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:44:43,400 INFO L225 Difference]: With dead ends: 960 [2022-01-10 02:44:43,400 INFO L226 Difference]: Without dead ends: 936 [2022-01-10 02:44:43,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=7004, Invalid=13588, Unknown=0, NotChecked=0, Total=20592 [2022-01-10 02:44:43,405 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 16735 mSDsluCounter, 10497 mSDsCounter, 0 mSdLazyCounter, 13465 mSolverCounterSat, 2352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16735 SdHoareTripleChecker+Valid, 10723 SdHoareTripleChecker+Invalid, 15817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2352 IncrementalHoareTripleChecker+Valid, 13465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:44:43,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16735 Valid, 10723 Invalid, 15817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2352 Valid, 13465 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-01-10 02:44:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-01-10 02:44:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 215. [2022-01-10 02:44:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.02803738317757) internal successors, (220), 214 states have internal predecessors, (220), 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 02:44:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 220 transitions. [2022-01-10 02:44:43,419 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 220 transitions. Word has length 118 [2022-01-10 02:44:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:44:43,420 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 220 transitions. [2022-01-10 02:44:43,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 97 states have internal predecessors, (198), 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 02:44:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 220 transitions. [2022-01-10 02:44:43,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 02:44:43,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:44:43,422 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:44:43,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 02:44:43,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:44:43,626 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:44:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:44:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash 600496200, now seen corresponding path program 6 times [2022-01-10 02:44:43,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:44:43,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216343897] [2022-01-10 02:44:43,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-10 02:44:43,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:44:43,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:44:43,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:44:43,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 02:44:43,763 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-10 02:44:43,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 02:44:43,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 02:44:43,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:44:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8872 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2022-01-10 02:44:44,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:44:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8872 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2022-01-10 02:44:44,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:44:44,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216343897] [2022-01-10 02:44:44,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216343897] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:44:44,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:44:44,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2022-01-10 02:44:44,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178494794] [2022-01-10 02:44:44,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:44:44,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 02:44:44,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:44:44,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 02:44:44,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:44:44,385 INFO L87 Difference]: Start difference. First operand 215 states and 220 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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 02:44:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:44:44,922 INFO L93 Difference]: Finished difference Result 261 states and 280 transitions. [2022-01-10 02:44:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 02:44:44,922 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-01-10 02:44:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:44:44,923 INFO L225 Difference]: With dead ends: 261 [2022-01-10 02:44:44,923 INFO L226 Difference]: Without dead ends: 241 [2022-01-10 02:44:44,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=517, Unknown=0, NotChecked=0, Total=756 [2022-01-10 02:44:44,924 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 177 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:44:44,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 103 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:44:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-01-10 02:44:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2022-01-10 02:44:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.046218487394958) internal successors, (249), 238 states have internal predecessors, (249), 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 02:44:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 249 transitions. [2022-01-10 02:44:44,933 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 249 transitions. Word has length 214 [2022-01-10 02:44:44,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:44:44,933 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 249 transitions. [2022-01-10 02:44:44,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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 02:44:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 249 transitions. [2022-01-10 02:44:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-10 02:44:44,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:44:44,936 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:44:44,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 02:44:45,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:44:45,143 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:44:45,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:44:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash -915040986, now seen corresponding path program 7 times [2022-01-10 02:44:45,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:44:45,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480380908] [2022-01-10 02:44:45,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-10 02:44:45,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:44:45,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:44:45,145 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:44:45,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 02:44:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:44:45,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 96 conjunts are in the unsatisfiable core [2022-01-10 02:44:45,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:44:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9046 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-01-10 02:44:48,890 INFO L328 TraceCheckSpWp]: Computing backward predicates...