/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/array-examples/standard_two_index_07.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 03:41:57,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 03:41:57,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 03:41:57,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 03:41:57,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 03:41:57,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 03:41:57,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 03:41:57,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 03:41:57,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 03:41:57,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 03:41:57,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 03:41:57,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 03:41:57,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 03:41:57,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 03:41:57,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 03:41:57,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 03:41:57,963 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 03:41:57,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 03:41:57,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 03:41:57,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 03:41:57,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 03:41:57,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 03:41:57,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 03:41:57,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 03:41:57,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 03:41:57,964 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 03:41:57,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 03:41:57,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 03:41:57,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 03:41:57,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 03:41:57,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 03:41:57,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:41:57,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 03:41:57,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 03:41:57,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 03:41:57,965 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 03:41:57,965 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 03:41:57,966 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 03:41:57,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 03:41:57,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 03:41:57,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 03:41:57,966 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 03:41:58,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 03:41:58,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 03:41:58,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 03:41:58,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 03:41:58,176 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 03:41:58,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_07.i [2022-01-10 03:41:58,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c103b50/a3ee534719934e969392aae6a462fefe/FLAG58c0281a1 [2022-01-10 03:41:58,611 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 03:41:58,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_07.i [2022-01-10 03:41:58,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c103b50/a3ee534719934e969392aae6a462fefe/FLAG58c0281a1 [2022-01-10 03:41:58,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c103b50/a3ee534719934e969392aae6a462fefe [2022-01-10 03:41:58,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 03:41:58,635 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 03:41:58,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 03:41:58,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 03:41:58,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 03:41:58,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56de9591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58, skipping insertion in model container [2022-01-10 03:41:58,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 03:41:58,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 03:41:58,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_07.i[814,827] [2022-01-10 03:41:58,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:41:58,813 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 03:41:58,823 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_07.i[814,827] [2022-01-10 03:41:58,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:41:58,848 INFO L208 MainTranslator]: Completed translation [2022-01-10 03:41:58,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58 WrapperNode [2022-01-10 03:41:58,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 03:41:58,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 03:41:58,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 03:41:58,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 03:41:58,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,875 INFO L137 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-01-10 03:41:58,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 03:41:58,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 03:41:58,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 03:41:58,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 03:41:58,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 03:41:58,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 03:41:58,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 03:41:58,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 03:41:58,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (1/1) ... [2022-01-10 03:41:58,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:41:58,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 03:41:58,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 03:41:58,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 03:41:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 03:41:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 03:41:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 03:41:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 03:41:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 03:41:58,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 03:41:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 03:41:58,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 03:41:59,013 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 03:41:59,014 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 03:41:59,144 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 03:41:59,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 03:41:59,152 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 03:41:59,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:41:59 BoogieIcfgContainer [2022-01-10 03:41:59,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 03:41:59,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 03:41:59,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 03:41:59,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 03:41:59,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:41:58" (1/3) ... [2022-01-10 03:41:59,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3dd777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:41:59, skipping insertion in model container [2022-01-10 03:41:59,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:41:58" (2/3) ... [2022-01-10 03:41:59,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3dd777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:41:59, skipping insertion in model container [2022-01-10 03:41:59,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:41:59" (3/3) ... [2022-01-10 03:41:59,159 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_two_index_07.i [2022-01-10 03:41:59,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 03:41:59,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 03:41:59,202 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 03:41:59,209 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 03:41:59,209 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 03:41:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 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 03:41:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 03:41:59,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:41:59,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:41:59,223 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:41:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:41:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1157635880, now seen corresponding path program 1 times [2022-01-10 03:41:59,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:41:59,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855619005] [2022-01-10 03:41:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:41:59,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:41:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:41:59,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:41:59,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 03:41:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:41:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 03:41:59,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:41:59,419 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 03:41:59,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:41:59,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:41:59,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855619005] [2022-01-10 03:41:59,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855619005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:41:59,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:41:59,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 03:41:59,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863660448] [2022-01-10 03:41:59,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:41:59,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 03:41:59,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:41:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 03:41:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 03:41:59,448 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:41:59,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:41:59,485 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2022-01-10 03:41:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 03:41:59,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-01-10 03:41:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:41:59,493 INFO L225 Difference]: With dead ends: 28 [2022-01-10 03:41:59,493 INFO L226 Difference]: Without dead ends: 12 [2022-01-10 03:41:59,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 03:41:59,498 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:41:59,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:41:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-10 03:41:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-10 03:41:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:41:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-01-10 03:41:59,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-01-10 03:41:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:41:59,519 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-01-10 03:41:59,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:41:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-01-10 03:41:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 03:41:59,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:41:59,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:41:59,528 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 03:41:59,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:41:59,726 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:41:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:41:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash 722375763, now seen corresponding path program 1 times [2022-01-10 03:41:59,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:41:59,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676470267] [2022-01-10 03:41:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:41:59,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:41:59,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:41:59,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:41:59,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 03:41:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:41:59,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 03:41:59,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:41:59,803 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 03:41:59,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:41:59,834 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 03:41:59,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:41:59,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676470267] [2022-01-10 03:41:59,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676470267] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:41:59,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:41:59,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 03:41:59,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821745518] [2022-01-10 03:41:59,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:41:59,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 03:41:59,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:41:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 03:41:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 03:41:59,837 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:41:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:41:59,920 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-01-10 03:41:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 03:41:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 03:41:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:41:59,921 INFO L225 Difference]: With dead ends: 35 [2022-01-10 03:41:59,921 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 03:41:59,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 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 03:41:59,922 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 03:41:59,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 03:41:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 03:41:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2022-01-10 03:41:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:41:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 03:41:59,926 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2022-01-10 03:41:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:41:59,926 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 03:41:59,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:41:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 03:41:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 03:41:59,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:41:59,927 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:41:59,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 03:42:00,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:42:00,134 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:42:00,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:42:00,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1963781416, now seen corresponding path program 1 times [2022-01-10 03:42:00,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:42:00,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799771488] [2022-01-10 03:42:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:42:00,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:42:00,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:42:00,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:42:00,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 03:42:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:42:00,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 03:42:00,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:42:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 03:42:00,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:42:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 03:42:00,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:42:00,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799771488] [2022-01-10 03:42:00,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799771488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:42:00,379 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:42:00,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 03:42:00,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507088129] [2022-01-10 03:42:00,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:42:00,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 03:42:00,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:42:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 03:42:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 03:42:00,381 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:42:00,614 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-01-10 03:42:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 03:42:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 15 [2022-01-10 03:42:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:42:00,616 INFO L225 Difference]: With dead ends: 43 [2022-01-10 03:42:00,616 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 03:42:00,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 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 03:42:00,617 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 03:42:00,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 42 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 03:42:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 03:42:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2022-01-10 03:42:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-01-10 03:42:00,624 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2022-01-10 03:42:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:42:00,624 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-01-10 03:42:00,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-01-10 03:42:00,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 03:42:00,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:42:00,625 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:42:00,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 03:42:00,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:42:00,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:42:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:42:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1032601848, now seen corresponding path program 2 times [2022-01-10 03:42:00,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:42:00,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373837309] [2022-01-10 03:42:00,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 03:42:00,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:42:00,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:42:00,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:42:00,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 03:42:00,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 03:42:00,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:42:00,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 03:42:00,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:42:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 03:42:01,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:42:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 03:42:01,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:42:01,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373837309] [2022-01-10 03:42:01,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373837309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:42:01,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:42:01,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-01-10 03:42:01,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731524381] [2022-01-10 03:42:01,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:42:01,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 03:42:01,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:42:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 03:42:01,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-01-10 03:42:01,323 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:42:02,259 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2022-01-10 03:42:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-10 03:42:02,260 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 21 [2022-01-10 03:42:02,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:42:02,261 INFO L225 Difference]: With dead ends: 67 [2022-01-10 03:42:02,261 INFO L226 Difference]: Without dead ends: 57 [2022-01-10 03:42:02,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 03:42:02,262 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 03:42:02,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 113 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 03:42:02,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-10 03:42:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 37. [2022-01-10 03:42:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-01-10 03:42:02,267 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 21 [2022-01-10 03:42:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:42:02,267 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-01-10 03:42:02,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-01-10 03:42:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 03:42:02,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:42:02,268 INFO L514 BasicCegarLoop]: trace histogram [22, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:42:02,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 03:42:02,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:42:02,478 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:42:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:42:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1491658632, now seen corresponding path program 3 times [2022-01-10 03:42:02,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:42:02,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967352291] [2022-01-10 03:42:02,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 03:42:02,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:42:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:42:02,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:42:02,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 03:42:02,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 03:42:02,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:42:02,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 03:42:02,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:42:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-01-10 03:42:02,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:42:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-01-10 03:42:02,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:42:02,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967352291] [2022-01-10 03:42:02,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967352291] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:42:02,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:42:02,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 03:42:02,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636454638] [2022-01-10 03:42:02,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:42:02,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 03:42:02,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:42:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 03:42:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 03:42:02,742 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:42:03,197 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2022-01-10 03:42:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 03:42:03,198 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 35 [2022-01-10 03:42:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:42:03,199 INFO L225 Difference]: With dead ends: 95 [2022-01-10 03:42:03,199 INFO L226 Difference]: Without dead ends: 89 [2022-01-10 03:42:03,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 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 03:42:03,200 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 144 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 03:42:03,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 98 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 03:42:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-10 03:42:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 43. [2022-01-10 03:42:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-01-10 03:42:03,206 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 35 [2022-01-10 03:42:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:42:03,206 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-01-10 03:42:03,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-01-10 03:42:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 03:42:03,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:42:03,207 INFO L514 BasicCegarLoop]: trace histogram [22, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:42:03,215 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 03:42:03,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:42:03,408 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:42:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:42:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash -529563080, now seen corresponding path program 4 times [2022-01-10 03:42:03,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:42:03,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125129793] [2022-01-10 03:42:03,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 03:42:03,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:42:03,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:42:03,409 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:42:03,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 03:42:03,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 03:42:03,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:42:03,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 03:42:03,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:42:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 03:42:03,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:42:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 03:42:04,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:42:04,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125129793] [2022-01-10 03:42:04,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125129793] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:42:04,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:42:04,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-01-10 03:42:04,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940818488] [2022-01-10 03:42:04,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:42:04,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-10 03:42:04,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:42:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-10 03:42:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 03:42:04,882 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:10,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:42:10,361 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2022-01-10 03:42:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-10 03:42:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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 41 [2022-01-10 03:42:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:42:10,362 INFO L225 Difference]: With dead ends: 125 [2022-01-10 03:42:10,362 INFO L226 Difference]: Without dead ends: 107 [2022-01-10 03:42:10,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-01-10 03:42:10,364 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 347 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 03:42:10,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 372 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 03:42:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-10 03:42:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 67. [2022-01-10 03:42:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2022-01-10 03:42:10,371 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 41 [2022-01-10 03:42:10,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:42:10,371 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2022-01-10 03:42:10,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:42:10,371 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2022-01-10 03:42:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 03:42:10,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:42:10,372 INFO L514 BasicCegarLoop]: trace histogram [46, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:42:10,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 03:42:10,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:42:10,580 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:42:10,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:42:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -892335432, now seen corresponding path program 5 times [2022-01-10 03:42:10,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:42:10,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847386146] [2022-01-10 03:42:10,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-10 03:42:10,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:42:10,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:42:10,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:42:10,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 03:42:11,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-01-10 03:42:11,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:42:11,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-10 03:42:11,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:42:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 03:42:12,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:42:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 03:42:18,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:42:18,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847386146] [2022-01-10 03:42:18,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847386146] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:42:18,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:42:18,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96 [2022-01-10 03:42:18,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808148558] [2022-01-10 03:42:18,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:42:18,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-10 03:42:18,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:42:18,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-10 03:42:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2022-01-10 03:42:18,082 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 96 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:43:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:43:05,505 INFO L93 Difference]: Finished difference Result 207 states and 262 transitions. [2022-01-10 03:43:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-10 03:43:05,506 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 96 states have internal predecessors, (104), 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 65 [2022-01-10 03:43:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:43:05,511 INFO L225 Difference]: With dead ends: 207 [2022-01-10 03:43:05,513 INFO L226 Difference]: Without dead ends: 189 [2022-01-10 03:43:05,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=6910, Invalid=13396, Unknown=0, NotChecked=0, Total=20306 [2022-01-10 03:43:05,517 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 1239 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 3600 mSolverCounterSat, 808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 4408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 3600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 03:43:05,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 1184 Invalid, 4408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 3600 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 03:43:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-01-10 03:43:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 119. [2022-01-10 03:43:05,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 118 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:43:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2022-01-10 03:43:05,526 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 65 [2022-01-10 03:43:05,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:43:05,526 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2022-01-10 03:43:05,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 96 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:43:05,526 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2022-01-10 03:43:05,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 03:43:05,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:43:05,537 INFO L514 BasicCegarLoop]: trace histogram [94, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:43:05,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 03:43:05,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:43:05,749 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:43:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:43:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash 814813752, now seen corresponding path program 6 times [2022-01-10 03:43:05,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:43:05,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823154214] [2022-01-10 03:43:05,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-10 03:43:05,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:43:05,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:43:05,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 03:43:05,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 03:43:06,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-01-10 03:43:06,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:43:06,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 03:43:06,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:43:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4570 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2022-01-10 03:43:06,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:43:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4570 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2022-01-10 03:43:07,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:43:07,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823154214] [2022-01-10 03:43:07,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823154214] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:43:07,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:43:07,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-01-10 03:43:07,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27781569] [2022-01-10 03:43:07,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:43:07,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-10 03:43:07,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:43:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-10 03:43:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2022-01-10 03:43:07,236 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:43:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:43:09,900 INFO L93 Difference]: Finished difference Result 287 states and 305 transitions. [2022-01-10 03:43:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-10 03:43:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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 117 [2022-01-10 03:43:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:43:09,902 INFO L225 Difference]: With dead ends: 287 [2022-01-10 03:43:09,902 INFO L226 Difference]: Without dead ends: 281 [2022-01-10 03:43:09,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 03:43:09,903 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 1036 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 03:43:09,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 738 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 03:43:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-01-10 03:43:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 135. [2022-01-10 03:43:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 134 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:43:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2022-01-10 03:43:09,913 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 117 [2022-01-10 03:43:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:43:09,913 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2022-01-10 03:43:09,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:43:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2022-01-10 03:43:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 03:43:09,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:43:09,914 INFO L514 BasicCegarLoop]: trace histogram [94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:43:09,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 03:43:10,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 03:43:10,125 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:43:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:43:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash 216689720, now seen corresponding path program 7 times [2022-01-10 03:43:10,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:43:10,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201633386] [2022-01-10 03:43:10,140 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-10 03:43:10,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:43:10,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:43:10,156 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 03:43:10,159 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 03:43:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:43:10,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 96 conjunts are in the unsatisfiable core [2022-01-10 03:43:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:43:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4930 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-01-10 03:43:13,051 INFO L328 TraceCheckSpWp]: Computing backward predicates...