/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-fpi/pcomp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:05:58,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:05:58,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:05:58,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:05:58,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:05:58,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:05:58,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:05:58,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:05:58,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:05:58,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:05:58,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:05:58,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:05:58,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:05:58,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:05:58,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:05:58,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:05:58,920 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:05:58,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:05:58,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:05:58,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:05:58,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:05:58,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:05:58,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:05:58,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:05:58,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:05:58,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:05:58,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:05:58,923 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:05:58,923 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:05:58,923 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:05:58,923 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:05:58,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:05:58,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:05:58,923 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:05:59,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:05:59,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:05:59,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:05:59,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:05:59,195 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:05:59,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/pcomp.c [2022-01-10 04:05:59,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c4b52bf7/c50cd40d635946d6b59534b1444aa890/FLAG182d0541d [2022-01-10 04:05:59,682 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:05:59,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/pcomp.c [2022-01-10 04:05:59,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c4b52bf7/c50cd40d635946d6b59534b1444aa890/FLAG182d0541d [2022-01-10 04:05:59,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c4b52bf7/c50cd40d635946d6b59534b1444aa890 [2022-01-10 04:05:59,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:05:59,718 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:05:59,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:05:59,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:05:59,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:05:59,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:05:59" (1/1) ... [2022-01-10 04:05:59,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d7ac84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:05:59, skipping insertion in model container [2022-01-10 04:05:59,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:05:59" (1/1) ... [2022-01-10 04:05:59,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:05:59,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:05:59,953 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-fpi/pcomp.c[588,601] [2022-01-10 04:05:59,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:06:00,005 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:06:00,016 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-fpi/pcomp.c[588,601] [2022-01-10 04:06:00,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:06:00,048 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:06:00,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00 WrapperNode [2022-01-10 04:06:00,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:06:00,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:06:00,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:06:00,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:06:00,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,096 INFO L137 Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-01-10 04:06:00,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:06:00,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:06:00,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:06:00,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:06:00,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:06:00,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:06:00,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:06:00,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:06:00,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (1/1) ... [2022-01-10 04:06:00,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:06:00,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:06:00,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 04:06:00,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 04:06:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:06:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:06:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:06:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:06:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:06:00,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:06:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:06:00,315 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:06:00,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:06:00,993 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:06:00,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:06:00,998 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 04:06:00,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:06:00 BoogieIcfgContainer [2022-01-10 04:06:00,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:06:01,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:06:01,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:06:01,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:06:01,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:05:59" (1/3) ... [2022-01-10 04:06:01,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c792d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:06:01, skipping insertion in model container [2022-01-10 04:06:01,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:06:00" (2/3) ... [2022-01-10 04:06:01,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c792d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:06:01, skipping insertion in model container [2022-01-10 04:06:01,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:06:00" (3/3) ... [2022-01-10 04:06:01,005 INFO L111 eAbstractionObserver]: Analyzing ICFG pcomp.c [2022-01-10 04:06:01,009 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:06:01,009 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:06:01,045 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:06:01,055 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:06:01,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:06:01,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:01,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 04:06:01,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:01,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:01,071 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:01,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2022-01-10 04:06:01,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361661440] [2022-01-10 04:06:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:01,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:01,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:01,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:06:01,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:06:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:01,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 04:06:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:06:01,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:06:01,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:01,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361661440] [2022-01-10 04:06:01,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361661440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:06:01,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:06:01,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:06:01,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768865733] [2022-01-10 04:06:01,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:06:01,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 04:06:01,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:01,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 04:06:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 04:06:01,313 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 04:06:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:01,326 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-01-10 04:06:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 04:06:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) Word has length 14 [2022-01-10 04:06:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:01,335 INFO L225 Difference]: With dead ends: 44 [2022-01-10 04:06:01,335 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 04:06:01,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 04:06:01,341 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:01,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:06:01,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 04:06:01,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-10 04:06:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 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 04:06:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-01-10 04:06:01,361 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2022-01-10 04:06:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:01,362 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-01-10 04:06:01,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 04:06:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-01-10 04:06:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 04:06:01,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:01,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:01,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:06:01,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:06:01,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2022-01-10 04:06:01,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:01,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146324876] [2022-01-10 04:06:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:01,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:01,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:01,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:06:01,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:06:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:01,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:06:01,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:02,101 INFO L353 Elim1Store]: treesize reduction 159, result has 28.7 percent of original size [2022-01-10 04:06:02,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 250 treesize of output 203 [2022-01-10 04:06:02,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:02,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:02,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:06:02,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:02,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:02,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:06:02,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:02,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:02,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:06:03,867 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 04:06:03,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:03,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2022-01-10 04:06:03,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:03,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2022-01-10 04:06:04,093 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:04,093 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 27 [2022-01-10 04:06:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:06:04,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:06:04,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:04,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146324876] [2022-01-10 04:06:04,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146324876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:06:04,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:06:04,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:06:04,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865963081] [2022-01-10 04:06:04,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:06:04,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:06:04,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:04,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:06:04,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:06:04,129 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 04:06:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:04,792 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-01-10 04:06:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:06:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) Word has length 14 [2022-01-10 04:06:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:04,800 INFO L225 Difference]: With dead ends: 39 [2022-01-10 04:06:04,800 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 04:06:04,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:06:04,802 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:04,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 04:06:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 04:06:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2022-01-10 04:06:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-01-10 04:06:04,808 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2022-01-10 04:06:04,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:04,808 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-01-10 04:06:04,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 04:06:04,809 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-01-10 04:06:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 04:06:04,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:04,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:04,825 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 04:06:05,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:06:05,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1850906398, now seen corresponding path program 1 times [2022-01-10 04:06:05,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:05,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493500706] [2022-01-10 04:06:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:05,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:05,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:05,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:06:05,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:06:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:05,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:06:05,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:06:05,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:06:05,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:05,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493500706] [2022-01-10 04:06:05,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493500706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:06:05,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:06:05,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 04:06:05,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158085712] [2022-01-10 04:06:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:06:05,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:06:05,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:06:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:06:05,365 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:05,886 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2022-01-10 04:06:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 04:06:05,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 04:06:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:05,909 INFO L225 Difference]: With dead ends: 54 [2022-01-10 04:06:05,909 INFO L226 Difference]: Without dead ends: 42 [2022-01-10 04:06:05,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-10 04:06:05,911 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 73 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:05,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 23 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 04:06:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-10 04:06:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-01-10 04:06:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-01-10 04:06:05,917 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2022-01-10 04:06:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:05,917 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-01-10 04:06:05,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-01-10 04:06:05,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 04:06:05,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:05,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:05,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:06:06,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:06:06,134 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:06,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1060218526, now seen corresponding path program 1 times [2022-01-10 04:06:06,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:06,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621398375] [2022-01-10 04:06:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:06,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:06,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:06,136 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:06:06,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:06:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:06,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:06:06,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:06,571 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 04:06:06,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:06:06,802 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 04:06:06,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:06,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621398375] [2022-01-10 04:06:06,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621398375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:06:06,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:06:06,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-01-10 04:06:06,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272562317] [2022-01-10 04:06:06,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:06:06,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 04:06:06,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 04:06:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:06:06,805 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:08,096 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2022-01-10 04:06:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 04:06:08,097 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 16 [2022-01-10 04:06:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:08,098 INFO L225 Difference]: With dead ends: 76 [2022-01-10 04:06:08,098 INFO L226 Difference]: Without dead ends: 62 [2022-01-10 04:06:08,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2022-01-10 04:06:08,100 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 159 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:08,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 44 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:06:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-10 04:06:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2022-01-10 04:06:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-01-10 04:06:08,107 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 16 [2022-01-10 04:06:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:08,108 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-01-10 04:06:08,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-01-10 04:06:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 04:06:08,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:08,109 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:08,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 04:06:08,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:06:08,320 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:08,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1120615462, now seen corresponding path program 1 times [2022-01-10 04:06:08,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:08,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641957892] [2022-01-10 04:06:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:08,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:08,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:06:08,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 04:06:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:08,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 04:06:08,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:06:08,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:06:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:06:08,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:08,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641957892] [2022-01-10 04:06:08,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641957892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:06:08,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:06:08,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2022-01-10 04:06:08,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311763862] [2022-01-10 04:06:08,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:06:08,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 04:06:08,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:08,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 04:06:08,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 04:06:08,923 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 04:06:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:09,702 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-01-10 04:06:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 04:06:09,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 18 [2022-01-10 04:06:09,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:09,716 INFO L225 Difference]: With dead ends: 53 [2022-01-10 04:06:09,716 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 04:06:09,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-01-10 04:06:09,717 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 70 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:09,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 31 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 04:06:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 04:06:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-01-10 04:06:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 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 04:06:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-01-10 04:06:09,722 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 18 [2022-01-10 04:06:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:09,723 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-01-10 04:06:09,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 04:06:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-01-10 04:06:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 04:06:09,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:09,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:09,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 04:06:09,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:06:09,926 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:09,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2022-01-10 04:06:09,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:09,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118151363] [2022-01-10 04:06:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:09,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:09,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:09,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:06:09,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:06:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:10,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 04:06:10,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:10,562 INFO L353 Elim1Store]: treesize reduction 159, result has 28.7 percent of original size [2022-01-10 04:06:10,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 151 [2022-01-10 04:06:10,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:10,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:10,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:06:10,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:10,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:10,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:06:10,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:10,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:10,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:06:10,749 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:10,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-01-10 04:06:10,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:10,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-10 04:06:10,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:10,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-10 04:06:10,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-01-10 04:06:10,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:10,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-10 04:06:11,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-01-10 04:06:11,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-10 04:06:11,244 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 04:06:11,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2022-01-10 04:06:11,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-10 04:06:11,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2022-01-10 04:06:11,526 INFO L353 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-01-10 04:06:11,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 78 [2022-01-10 04:06:11,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-10 04:06:11,687 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 04:06:11,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-01-10 04:06:11,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:06:11,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:06:11,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:11,939 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:11,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 43 [2022-01-10 04:06:12,022 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:12,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2022-01-10 04:06:12,049 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 04:06:12,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:06:14,998 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_214 (Array (_ BitVec 64) (_ BitVec 32)))) (= (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_214) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 64) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|))))) is different from false [2022-01-10 04:06:15,061 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_213 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_214 (Array (_ BitVec 64) (_ BitVec 32)))) (= (_ bv0 64) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_213) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_214) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 64) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|))))) is different from false [2022-01-10 04:06:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-10 04:06:15,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:15,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118151363] [2022-01-10 04:06:15,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118151363] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:06:15,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:06:15,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-01-10 04:06:15,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141502988] [2022-01-10 04:06:15,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:06:15,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 04:06:15,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:15,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 04:06:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=99, Unknown=2, NotChecked=42, Total=182 [2022-01-10 04:06:15,100 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:17,488 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-01-10 04:06:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 04:06:17,506 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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 20 [2022-01-10 04:06:17,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:17,506 INFO L225 Difference]: With dead ends: 59 [2022-01-10 04:06:17,506 INFO L226 Difference]: Without dead ends: 57 [2022-01-10 04:06:17,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=225, Unknown=3, NotChecked=66, Total=380 [2022-01-10 04:06:17,507 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:17,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 128 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 54 Invalid, 0 Unknown, 76 Unchecked, 1.8s Time] [2022-01-10 04:06:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-10 04:06:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2022-01-10 04:06:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-01-10 04:06:17,514 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 20 [2022-01-10 04:06:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:17,514 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-01-10 04:06:17,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-01-10 04:06:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 04:06:17,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:17,515 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:17,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 04:06:17,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:06:17,719 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:17,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash 803751580, now seen corresponding path program 2 times [2022-01-10 04:06:17,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:17,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300909839] [2022-01-10 04:06:17,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:06:17,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:17,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:17,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:06:17,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 04:06:18,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:06:18,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:06:18,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 04:06:18,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 04:06:18,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:06:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 04:06:18,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:18,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300909839] [2022-01-10 04:06:18,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300909839] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:06:18,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:06:18,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2022-01-10 04:06:18,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903009665] [2022-01-10 04:06:18,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:06:18,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 04:06:18,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 04:06:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-01-10 04:06:18,931 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:21,534 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2022-01-10 04:06:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 04:06:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 04:06:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:21,536 INFO L225 Difference]: With dead ends: 108 [2022-01-10 04:06:21,536 INFO L226 Difference]: Without dead ends: 91 [2022-01-10 04:06:21,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 04:06:21,540 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 189 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:21,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 71 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 04:06:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-10 04:06:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 56. [2022-01-10 04:06:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2022-01-10 04:06:21,554 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 22 [2022-01-10 04:06:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:21,554 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2022-01-10 04:06:21,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2022-01-10 04:06:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 04:06:21,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:21,555 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:21,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 04:06:21,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:06:21,770 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash 678263444, now seen corresponding path program 1 times [2022-01-10 04:06:21,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:21,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759605169] [2022-01-10 04:06:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:06:21,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:21,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:21,772 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:06:21,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 04:06:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:06:22,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-10 04:06:22,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:22,401 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 04:06:22,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-01-10 04:06:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:22,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2022-01-10 04:06:22,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2022-01-10 04:06:22,598 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-10 04:06:22,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 37 [2022-01-10 04:06:22,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2022-01-10 04:06:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:22,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 69 [2022-01-10 04:06:25,997 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-01-10 04:06:25,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 116 treesize of output 56 [2022-01-10 04:06:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:06:26,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:06:41,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_323 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_325 (_ BitVec 32)) (v_ArrVal_324 (_ BitVec 32))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_323))) (let ((.cse6 (store (store (select .cse7 |c_ULTIMATE.start_main_~b~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_325) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv12 64)) v_ArrVal_324))) (let ((.cse1 (bvadd (_ bv4 64) |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse4 (select (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| .cse6) |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse5 (bvadd (concat (select .cse4 .cse1) (select .cse4 |c_ULTIMATE.start_main_~c~0#1.offset|)) (concat (select .cse6 (bvadd (_ bv4 64) |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse6 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (let ((.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse2 ((_ extract 63 32) .cse5))) (let ((.cse0 (store (store .cse4 .cse3 ((_ extract 31 0) .cse5)) (bvadd |c_ULTIMATE.start_main_~c~0#1.offset| (_ bv12 64)) .cse2))) (or (not (= (_ bv0 64) (concat (select .cse0 .cse1) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|)))) (= (_ bv1 64) (concat .cse2 (select .cse0 .cse3))))))))))) is different from false [2022-01-10 04:06:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-10 04:06:41,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:41,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759605169] [2022-01-10 04:06:41,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759605169] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:06:41,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:06:41,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2022-01-10 04:06:41,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454926589] [2022-01-10 04:06:41,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:06:41,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 04:06:41,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 04:06:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2022-01-10 04:06:41,527 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:45,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:06:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:06:50,628 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2022-01-10 04:06:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 04:06:50,629 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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 24 [2022-01-10 04:06:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:06:50,629 INFO L225 Difference]: With dead ends: 66 [2022-01-10 04:06:50,629 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 04:06:50,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=97, Invalid=458, Unknown=1, NotChecked=44, Total=600 [2022-01-10 04:06:50,630 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:06:50,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 97 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 1 Unknown, 56 Unchecked, 6.1s Time] [2022-01-10 04:06:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 04:06:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2022-01-10 04:06:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-01-10 04:06:50,638 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 24 [2022-01-10 04:06:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:06:50,638 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-01-10 04:06:50,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:06:50,639 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-01-10 04:06:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 04:06:50,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:06:50,640 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:06:50,655 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 04:06:50,851 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 04:06:50,852 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:06:50,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:06:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1304966232, now seen corresponding path program 3 times [2022-01-10 04:06:50,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:06:50,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63141923] [2022-01-10 04:06:50,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 04:06:50,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:06:50,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:06:50,853 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 04:06:50,854 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 04:06:51,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 04:06:51,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:06:51,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 04:06:51,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:06:51,752 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 04:06:51,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-01-10 04:06:51,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:51,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:51,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-01-10 04:06:51,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:51,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:06:51,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-10 04:06:51,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:06:51,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:06:52,037 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:06:52,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-01-10 04:06:52,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,211 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:52,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 48 [2022-01-10 04:06:52,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:06:52,283 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:52,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 43 [2022-01-10 04:06:52,354 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:06:52,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2022-01-10 04:06:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 04:06:52,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:06:56,337 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_391 (Array (_ BitVec 64) (_ BitVec 32)))) (= (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_391) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 64) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|))))) is different from false [2022-01-10 04:06:56,379 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_389 (Array (_ BitVec 64) (_ BitVec 32))) (v_ArrVal_391 (Array (_ BitVec 64) (_ BitVec 32)))) (= (_ bv0 64) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_389) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_391) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 64) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|))))) is different from false [2022-01-10 04:06:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-01-10 04:06:56,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:06:56,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63141923] [2022-01-10 04:06:56,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63141923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:06:56,413 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:06:56,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2022-01-10 04:06:56,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250513620] [2022-01-10 04:06:56,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:06:56,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 04:06:56,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:06:56,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 04:06:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=159, Unknown=2, NotChecked=54, Total=272 [2022-01-10 04:06:56,415 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:07:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:07:02,696 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2022-01-10 04:07:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 04:07:02,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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 26 [2022-01-10 04:07:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:07:02,712 INFO L225 Difference]: With dead ends: 91 [2022-01-10 04:07:02,712 INFO L226 Difference]: Without dead ends: 89 [2022-01-10 04:07:02,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=157, Invalid=499, Unknown=2, NotChecked=98, Total=756 [2022-01-10 04:07:02,713 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:07:02,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 90 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 97 Invalid, 0 Unknown, 121 Unchecked, 2.5s Time] [2022-01-10 04:07:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-10 04:07:02,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2022-01-10 04:07:02,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.140625) internal successors, (73), 64 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:07:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-01-10 04:07:02,723 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 26 [2022-01-10 04:07:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:07:02,723 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-01-10 04:07:02,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:07:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-01-10 04:07:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 04:07:02,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:07:02,724 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:07:02,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 04:07:02,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:07:02,941 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:07:02,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:07:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash -231193078, now seen corresponding path program 2 times [2022-01-10 04:07:02,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:07:02,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874420853] [2022-01-10 04:07:02,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:07:02,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:07:02,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:07:02,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:07:02,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 04:07:03,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:07:03,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:07:03,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 04:07:03,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:07:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 04:07:03,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:07:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 04:07:03,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:07:03,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874420853] [2022-01-10 04:07:03,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874420853] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:07:03,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:07:03,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2022-01-10 04:07:03,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26259715] [2022-01-10 04:07:03,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:07:03,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 04:07:03,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:07:03,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 04:07:04,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-10 04:07:04,000 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:07:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:07:05,384 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2022-01-10 04:07:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 04:07:05,398 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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 28 [2022-01-10 04:07:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:07:05,398 INFO L225 Difference]: With dead ends: 83 [2022-01-10 04:07:05,398 INFO L226 Difference]: Without dead ends: 59 [2022-01-10 04:07:05,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2022-01-10 04:07:05,399 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 135 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:07:05,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 65 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:07:05,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-01-10 04:07:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2022-01-10 04:07:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:07:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2022-01-10 04:07:05,407 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 28 [2022-01-10 04:07:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:07:05,407 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2022-01-10 04:07:05,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:07:05,407 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2022-01-10 04:07:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 04:07:05,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:07:05,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:07:05,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 04:07:05,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:07:05,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:07:05,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:07:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 3 times [2022-01-10 04:07:05,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:07:05,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755102312] [2022-01-10 04:07:05,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 04:07:05,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:07:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:07:05,613 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:07:05,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 04:07:06,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 04:07:06,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:07:06,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-10 04:07:06,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:07:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:06,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:06,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:06,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:06,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:06,653 INFO L353 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2022-01-10 04:07:06,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 43 [2022-01-10 04:07:06,705 INFO L353 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-01-10 04:07:06,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 60 [2022-01-10 04:07:06,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:06,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-10 04:07:06,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2022-01-10 04:07:06,891 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 04:07:06,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-01-10 04:07:07,054 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-10 04:07:07,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 37 [2022-01-10 04:07:07,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-01-10 04:07:07,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46 [2022-01-10 04:07:07,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2022-01-10 04:07:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:07,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:07:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 90 [2022-01-10 04:07:07,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:07:07,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 93 [2022-01-10 04:07:09,929 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-01-10 04:07:09,929 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 56 [2022-01-10 04:07:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:07:09,976 INFO L328 TraceCheckSpWp]: Computing backward predicates...