/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/combinations/gcd_3+newton_3_6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:57:20,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:57:20,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:57:20,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 07:57:20,862 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 07:57:20,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:57:20,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:57:20,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:57:20,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:57:20,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:57:20,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:57:20,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:57:20,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:57:20,878 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:57:20,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:57:20,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:57:20,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:57:20,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:57:20,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:57:20,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:57:20,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:57:20,879 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:57:20,879 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:57:20,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:57:20,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:57:20,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:57:20,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:57:20,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:57:20,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:57:20,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:57:20,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:57:20,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:57:20,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:57:20,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:57:20,880 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:57:20,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:57:20,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:57:20,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:57:20,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:57:21,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:57:21,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:57:21,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:57:21,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:57:21,046 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:57:21,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/gcd_3+newton_3_6.i [2022-01-10 07:57:21,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30792ecdb/1cf59f231550404f8e200b99315640ea/FLAG8bdd70cea [2022-01-10 07:57:21,392 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:57:21,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_3+newton_3_6.i [2022-01-10 07:57:21,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30792ecdb/1cf59f231550404f8e200b99315640ea/FLAG8bdd70cea [2022-01-10 07:57:21,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30792ecdb/1cf59f231550404f8e200b99315640ea [2022-01-10 07:57:21,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:57:21,835 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:57:21,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:57:21,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:57:21,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:57:21,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:57:21" (1/1) ... [2022-01-10 07:57:21,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637a46a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:21, skipping insertion in model container [2022-01-10 07:57:21,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:57:21" (1/1) ... [2022-01-10 07:57:21,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:57:21,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:57:21,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_3+newton_3_6.i[1226,1239] [2022-01-10 07:57:22,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_3+newton_3_6.i[2862,2875] [2022-01-10 07:57:22,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:57:22,018 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:57:22,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_3+newton_3_6.i[1226,1239] [2022-01-10 07:57:22,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_3+newton_3_6.i[2862,2875] [2022-01-10 07:57:22,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:57:22,067 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:57:22,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22 WrapperNode [2022-01-10 07:57:22,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:57:22,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:57:22,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:57:22,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:57:22,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,111 INFO L137 Inliner]: procedures = 28, calls = 18, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 77 [2022-01-10 07:57:22,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:57:22,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:57:22,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:57:22,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:57:22,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:57:22,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:57:22,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:57:22,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:57:22,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (1/1) ... [2022-01-10 07:57:22,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:57:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:57:22,177 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 07:57:22,184 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 07:57:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:57:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:57:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-01-10 07:57:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-01-10 07:57:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-10 07:57:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-10 07:57:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:57:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:57:22,250 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:57:22,251 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:57:22,436 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:57:22,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:57:22,444 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 07:57:22,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:57:22 BoogieIcfgContainer [2022-01-10 07:57:22,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:57:22,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:57:22,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:57:22,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:57:22,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:57:21" (1/3) ... [2022-01-10 07:57:22,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f98418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:57:22, skipping insertion in model container [2022-01-10 07:57:22,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:57:22" (2/3) ... [2022-01-10 07:57:22,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f98418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:57:22, skipping insertion in model container [2022-01-10 07:57:22,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:57:22" (3/3) ... [2022-01-10 07:57:22,451 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_6.i [2022-01-10 07:57:22,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:57:22,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:57:22,500 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:57:22,505 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 07:57:22,505 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:57:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 07:57:22,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 07:57:22,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:57:22,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:57:22,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:57:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:57:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-01-10 07:57:22,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:57:22,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979984347] [2022-01-10 07:57:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:57:22,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:57:22,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:57:22,533 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 07:57:22,551 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 07:57:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:57:22,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:57:22,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:57:22,707 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 07:57:22,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:57:22,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:57:22,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979984347] [2022-01-10 07:57:22,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979984347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:57:22,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:57:22,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:57:22,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635394223] [2022-01-10 07:57:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:57:22,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:57:22,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:57:22,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:57:22,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:57:22,739 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:57:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:57:22,762 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-01-10 07:57:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:57:22,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-01-10 07:57:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:57:22,768 INFO L225 Difference]: With dead ends: 74 [2022-01-10 07:57:22,768 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 07:57:22,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 07:57:22,779 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:57:22,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-01-10 07:57:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 07:57:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-10 07:57:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 07:57:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-01-10 07:57:22,815 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-01-10 07:57:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:57:22,816 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-01-10 07:57:22,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 07:57:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-01-10 07:57:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 07:57:22,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:57:22,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:57:22,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:57:23,024 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 07:57:23,025 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:57:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:57:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-01-10 07:57:23,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:57:23,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089574905] [2022-01-10 07:57:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:57:23,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:57:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:57:23,027 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 07:57:23,029 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 07:57:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:57:23,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:57:23,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:57:23,084 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 07:57:23,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:57:23,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:57:23,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089574905] [2022-01-10 07:57:23,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089574905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:57:23,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:57:23,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:57:23,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399006955] [2022-01-10 07:57:23,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:57:23,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:57:23,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:57:23,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:57:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:57:23,087 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 07:57:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:57:23,153 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-01-10 07:57:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:57:23,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-01-10 07:57:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:57:23,154 INFO L225 Difference]: With dead ends: 49 [2022-01-10 07:57:23,154 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 07:57:23,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:57:23,155 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:57:23,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 103 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:57:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 07:57:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-01-10 07:57:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 07:57:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-01-10 07:57:23,160 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-01-10 07:57:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:57:23,160 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-01-10 07:57:23,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 07:57:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-01-10 07:57:23,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 07:57:23,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:57:23,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:57:23,169 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 07:57:23,361 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 07:57:23,362 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:57:23,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:57:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash -743724587, now seen corresponding path program 1 times [2022-01-10 07:57:23,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:57:23,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017036085] [2022-01-10 07:57:23,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:57:23,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:57:23,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:57:23,366 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 07:57:23,367 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 07:57:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:57:23,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:57:23,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:57:23,542 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 07:57:23,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:57:23,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:57:23,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017036085] [2022-01-10 07:57:23,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017036085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:57:23,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:57:23,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:57:23,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043857697] [2022-01-10 07:57:23,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:57:23,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:57:23,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:57:23,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:57:23,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:57:23,545 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 07:57:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:57:23,636 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-01-10 07:57:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:57:23,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 11 [2022-01-10 07:57:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:57:23,637 INFO L225 Difference]: With dead ends: 40 [2022-01-10 07:57:23,637 INFO L226 Difference]: Without dead ends: 34 [2022-01-10 07:57:23,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:57:23,640 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:57:23,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 185 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:57:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-10 07:57:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-01-10 07:57:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 07:57:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-01-10 07:57:23,644 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-01-10 07:57:23,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:57:23,644 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-01-10 07:57:23,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 07:57:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-01-10 07:57:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 07:57:23,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:57:23,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:57:23,663 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 07:57:23,853 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 07:57:23,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:57:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:57:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-01-10 07:57:23,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:57:23,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427763934] [2022-01-10 07:57:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:57:23,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:57:23,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:57:23,857 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 07:57:23,858 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 07:57:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:57:23,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 07:57:23,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:57:26,039 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 07:57:26,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:57:42,968 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 07:57:42,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:57:42,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427763934] [2022-01-10 07:57:42,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427763934] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:57:42,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:57:42,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-01-10 07:57:42,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287170330] [2022-01-10 07:57:42,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:57:42,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 07:57:42,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:57:42,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 07:57:42,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=237, Unknown=6, NotChecked=0, Total=306 [2022-01-10 07:57:42,971 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 07:57:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:57:43,009 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-01-10 07:57:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 07:57:43,009 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 07:57:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:57:43,010 INFO L225 Difference]: With dead ends: 46 [2022-01-10 07:57:43,010 INFO L226 Difference]: Without dead ends: 36 [2022-01-10 07:57:43,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=63, Invalid=237, Unknown=6, NotChecked=0, Total=306 [2022-01-10 07:57:43,013 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:57:43,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 291 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-01-10 07:57:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-10 07:57:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-01-10 07:57:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 07:57:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-01-10 07:57:43,017 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2022-01-10 07:57:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:57:43,017 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-01-10 07:57:43,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 07:57:43,017 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-01-10 07:57:43,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 07:57:43,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:57:43,018 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:57:43,042 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 07:57:43,218 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 07:57:43,219 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:57:43,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:57:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2052984139, now seen corresponding path program 1 times [2022-01-10 07:57:43,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:57:43,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104439277] [2022-01-10 07:57:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:57:43,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:57:43,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:57:43,222 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 07:57:43,223 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 07:57:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:57:43,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 07:57:43,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:57:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:57:56,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:58:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:58:32,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:58:32,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104439277] [2022-01-10 07:58:32,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104439277] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:58:32,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:58:32,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2022-01-10 07:58:32,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442880713] [2022-01-10 07:58:32,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:58:32,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 07:58:32,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:58:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 07:58:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=269, Unknown=1, NotChecked=0, Total=342 [2022-01-10 07:58:32,255 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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 07:58:34,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []