/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.prune.known.deadend.states.from.previous.iterations false -s ../../../trunk/examples/settings/gemcutter/DynamicStratifiedAbstractions.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.dynamic-abstractions-57af04c-m [2024-01-26 02:17:00,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-26 02:17:00,162 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/DynamicStratifiedAbstractions.epf [2024-01-26 02:17:00,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-26 02:17:00,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-26 02:17:00,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-01-26 02:17:00,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-26 02:17:00,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-26 02:17:00,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-26 02:17:00,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-26 02:17:00,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-26 02:17:00,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-26 02:17:00,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-26 02:17:00,190 INFO L153 SettingsManager]: * Use SBE=true [2024-01-26 02:17:00,191 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-26 02:17:00,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-26 02:17:00,191 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-26 02:17:00,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-26 02:17:00,192 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-26 02:17:00,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-26 02:17:00,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-26 02:17:00,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-26 02:17:00,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-26 02:17:00,193 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-26 02:17:00,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-26 02:17:00,193 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-26 02:17:00,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-26 02:17:00,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-26 02:17:00,194 INFO L153 SettingsManager]: * To the following directory=./dump/ [2024-01-26 02:17:00,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-26 02:17:00,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-01-26 02:17:00,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-26 02:17:00,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-26 02:17:00,195 INFO L153 SettingsManager]: * Abstraction for dynamic stratified reduction=VARIABLES_GLOBAL [2024-01-26 02:17:00,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2024-01-26 02:17:00,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-26 02:17:00,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-26 02:17:00,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-26 02:17:00,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-01-26 02:17:00,196 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-26 02:17:00,196 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=DYNAMIC_ABSTRACTIONS [2024-01-26 02:17:00,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION [2024-01-26 02:17:00,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-26 02:17:00,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-26 02:17:00,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-26 02:17:00,482 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-26 02:17:00,482 INFO L274 PluginConnector]: CDTParser initialized [2024-01-26 02:17:00,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2024-01-26 02:17:01,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-26 02:17:01,724 INFO L384 CDTParser]: Found 1 translation units. [2024-01-26 02:17:01,725 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2024-01-26 02:17:01,735 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e0cf2901f/7428c872229a49418b947edaf43d4dac/FLAGf5a0c9049 [2024-01-26 02:17:01,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/e0cf2901f/7428c872229a49418b947edaf43d4dac [2024-01-26 02:17:01,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-26 02:17:01,754 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-26 02:17:01,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-26 02:17:01,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-26 02:17:01,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-26 02:17:01,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:01,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e603548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01, skipping insertion in model container [2024-01-26 02:17:01,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:01,787 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-26 02:17:01,922 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c[2500,2513] [2024-01-26 02:17:01,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 02:17:01,937 INFO L202 MainTranslator]: Completed pre-run [2024-01-26 02:17:01,956 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c[2500,2513] [2024-01-26 02:17:01,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 02:17:01,971 INFO L206 MainTranslator]: Completed translation [2024-01-26 02:17:01,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01 WrapperNode [2024-01-26 02:17:01,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-26 02:17:01,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-26 02:17:01,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-26 02:17:01,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-26 02:17:01,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:01,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,009 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 146 [2024-01-26 02:17:02,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-26 02:17:02,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-26 02:17:02,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-26 02:17:02,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-26 02:17:02,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-26 02:17:02,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-26 02:17:02,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-26 02:17:02,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-26 02:17:02,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (1/1) ... [2024-01-26 02:17:02,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-01-26 02:17:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 02:17:02,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-01-26 02:17:02,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-01-26 02:17:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-26 02:17:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-26 02:17:02,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-26 02:17:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-26 02:17:02,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-26 02:17:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-01-26 02:17:02,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-26 02:17:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-01-26 02:17:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-26 02:17:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-26 02:17:02,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-26 02:17:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-01-26 02:17:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-26 02:17:02,155 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-26 02:17:02,278 INFO L241 CfgBuilder]: Building ICFG [2024-01-26 02:17:02,280 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-26 02:17:02,479 INFO L282 CfgBuilder]: Performing block encoding [2024-01-26 02:17:02,492 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-26 02:17:02,493 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-26 02:17:02,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 02:17:02 BoogieIcfgContainer [2024-01-26 02:17:02,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-26 02:17:02,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-26 02:17:02,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-26 02:17:02,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-26 02:17:02,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 02:17:01" (1/3) ... [2024-01-26 02:17:02,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9781e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 02:17:02, skipping insertion in model container [2024-01-26 02:17:02,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 02:17:01" (2/3) ... [2024-01-26 02:17:02,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9781e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 02:17:02, skipping insertion in model container [2024-01-26 02:17:02,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 02:17:02" (3/3) ... [2024-01-26 02:17:02,499 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2024-01-26 02:17:02,505 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-26 02:17:02,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-26 02:17:02,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-26 02:17:02,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-26 02:17:02,612 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-26 02:17:02,654 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 02:17:02,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-01-26 02:17:02,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 02:17:02,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-01-26 02:17:02,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-01-26 02:17:02,699 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-01-26 02:17:02,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-01-26 02:17:02,710 INFO L357 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=PARTIAL_ORDER_FA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40560c98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 02:17:02,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. Found a loop, use abstraction hammer [2024-01-26 02:17:03,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-01-26 02:17:03,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 02:17:03,243 INFO L85 PathProgramCache]: Analyzing trace with hash 619322544, now seen corresponding path program 1 times [2024-01-26 02:17:03,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 02:17:03,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650766300] [2024-01-26 02:17:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:03,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 02:17:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 02:17:03,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 02:17:03,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650766300] [2024-01-26 02:17:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650766300] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 02:17:03,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 02:17:03,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 02:17:03,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971455310] [2024-01-26 02:17:03,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 02:17:03,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-26 02:17:03,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 02:17:03,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-26 02:17:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-26 02:17:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:03,513 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 02:17:03,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 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) [2024-01-26 02:17:03,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer [2024-01-26 02:17:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:03,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-26 02:17:03,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-01-26 02:17:03,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 02:17:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash 244162169, now seen corresponding path program 1 times [2024-01-26 02:17:03,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 02:17:03,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476544189] [2024-01-26 02:17:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 02:17:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-26 02:17:04,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 02:17:04,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476544189] [2024-01-26 02:17:04,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476544189] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 02:17:04,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 02:17:04,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-26 02:17:04,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165693008] [2024-01-26 02:17:04,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 02:17:04,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-26 02:17:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 02:17:04,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-26 02:17:04,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-26 02:17:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:04,161 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 02:17:04,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2024-01-26 02:17:04,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:04,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer [2024-01-26 02:17:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:04,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:04,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-26 02:17:04,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-01-26 02:17:04,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 02:17:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1529207865, now seen corresponding path program 1 times [2024-01-26 02:17:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 02:17:04,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534406060] [2024-01-26 02:17:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 02:17:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-26 02:17:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 02:17:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534406060] [2024-01-26 02:17:05,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534406060] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-26 02:17:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849235897] [2024-01-26 02:17:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:05,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 02:17:05,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 02:17:05,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-26 02:17:05,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-26 02:17:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:05,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2024-01-26 02:17:05,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-26 02:17:05,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-26 02:17:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-26 02:17:05,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-26 02:17:05,951 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-01-26 02:17:05,952 INFO L378 Elim1Store]: Elim1 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 19 treesize of output 7 [2024-01-26 02:17:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-26 02:17:06,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849235897] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-26 02:17:06,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-26 02:17:06,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 9] total 17 [2024-01-26 02:17:06,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875260355] [2024-01-26 02:17:06,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-26 02:17:06,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-26 02:17:06,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 02:17:06,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-26 02:17:06,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-01-26 02:17:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:06,096 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 02:17:06,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.294117647058824) internal successors, (226), 17 states have internal predecessors, (226), 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) [2024-01-26 02:17:06,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:06,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:06,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer [2024-01-26 02:17:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:17:06,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-26 02:17:06,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-01-26 02:17:06,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-01-26 02:17:06,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 02:17:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1251922631, now seen corresponding path program 2 times [2024-01-26 02:17:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 02:17:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699839788] [2024-01-26 02:17:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 02:17:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-26 02:17:07,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 02:17:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699839788] [2024-01-26 02:17:07,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699839788] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-26 02:17:07,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628710976] [2024-01-26 02:17:07,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-26 02:17:07,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 02:17:07,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 02:17:07,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-26 02:17:07,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-26 02:17:07,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-26 02:17:07,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-26 02:17:07,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 39 conjunts are in the unsatisfiable core [2024-01-26 02:17:07,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-26 02:17:07,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-26 02:17:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-26 02:17:08,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-26 02:17:08,155 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-01-26 02:17:08,155 INFO L378 Elim1Store]: Elim1 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 19 treesize of output 7 [2024-01-26 02:17:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-26 02:17:08,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628710976] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-26 02:17:08,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-26 02:17:08,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 23, 17] total 41 [2024-01-26 02:17:08,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062807012] [2024-01-26 02:17:08,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-26 02:17:08,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-01-26 02:17:08,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 02:17:08,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-01-26 02:17:08,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1484, Unknown=0, NotChecked=0, Total=1640 [2024-01-26 02:17:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:08,893 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 02:17:08,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.707317073170731) internal successors, (357), 41 states have internal predecessors, (357), 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) [2024-01-26 02:17:08,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:08,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:08,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:17:08,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer [2024-01-26 02:17:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:17:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-01-26 02:17:11,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-26 02:17:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 02:17:11,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-01-26 02:17:11,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 02:17:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 625940926, now seen corresponding path program 1 times [2024-01-26 02:17:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 02:17:11,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831959325] [2024-01-26 02:17:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:11,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 02:17:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 02:17:19,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 02:17:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831959325] [2024-01-26 02:17:19,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831959325] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-26 02:17:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678000559] [2024-01-26 02:17:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:19,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 02:17:19,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 02:17:19,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-26 02:17:19,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-26 02:17:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:20,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 53 conjunts are in the unsatisfiable core [2024-01-26 02:17:20,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-26 02:17:21,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-26 02:17:21,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2024-01-26 02:17:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-26 02:17:21,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-26 02:17:22,114 INFO L349 Elim1Store]: treesize reduction 15, result has 90.2 percent of original size [2024-01-26 02:17:22,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 173 [2024-01-26 02:17:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-01-26 02:17:22,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678000559] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-26 02:17:22,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-26 02:17:22,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 27, 17] total 78 [2024-01-26 02:17:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944161461] [2024-01-26 02:17:22,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-26 02:17:22,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-01-26 02:17:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 02:17:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-01-26 02:17:22,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=5658, Unknown=0, NotChecked=0, Total=6006 [2024-01-26 02:17:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:22,370 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 02:17:22,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 6.487179487179487) internal successors, (506), 78 states have internal predecessors, (506), 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) [2024-01-26 02:17:22,371 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:22,371 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:22,371 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:17:22,371 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2024-01-26 02:17:22,371 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer [2024-01-26 02:17:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:17:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-01-26 02:17:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-01-26 02:17:27,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-26 02:17:27,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 02:17:27,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-01-26 02:17:27,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 02:17:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash 615538476, now seen corresponding path program 2 times [2024-01-26 02:17:27,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 02:17:27,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550911727] [2024-01-26 02:17:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:27,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 02:17:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-26 02:17:28,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 02:17:28,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550911727] [2024-01-26 02:17:28,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550911727] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-26 02:17:28,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284612152] [2024-01-26 02:17:28,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-26 02:17:28,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 02:17:28,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 02:17:28,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-26 02:17:28,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-26 02:17:28,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-26 02:17:28,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-26 02:17:28,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 29 conjunts are in the unsatisfiable core [2024-01-26 02:17:28,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-26 02:17:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-26 02:17:28,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-26 02:17:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-26 02:17:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284612152] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-26 02:17:29,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-26 02:17:29,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 17] total 38 [2024-01-26 02:17:29,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242723476] [2024-01-26 02:17:29,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-26 02:17:29,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-01-26 02:17:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 02:17:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-01-26 02:17:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2024-01-26 02:17:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:29,782 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 02:17:29,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.368421052631579) internal successors, (318), 38 states have internal predecessors, (318), 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) [2024-01-26 02:17:29,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:29,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:29,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:17:29,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2024-01-26 02:17:29,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2024-01-26 02:17:29,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer [2024-01-26 02:17:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:17:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-01-26 02:17:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-01-26 02:17:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-01-26 02:17:37,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-26 02:17:37,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-26 02:17:37,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-01-26 02:17:37,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 02:17:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1769879719, now seen corresponding path program 3 times [2024-01-26 02:17:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 02:17:37,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89539719] [2024-01-26 02:17:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:17:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 02:17:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 02:17:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-26 02:17:38,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 02:17:38,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89539719] [2024-01-26 02:17:38,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89539719] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-26 02:17:38,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27801598] [2024-01-26 02:17:38,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-26 02:17:38,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 02:17:38,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-01-26 02:17:38,937 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-26 02:17:38,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-26 02:17:39,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-01-26 02:17:39,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-26 02:17:39,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 54 conjunts are in the unsatisfiable core [2024-01-26 02:17:39,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-26 02:17:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-26 02:17:40,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-26 02:17:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-01-26 02:17:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27801598] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-26 02:17:43,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-26 02:17:43,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 29] total 74 [2024-01-26 02:17:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763372903] [2024-01-26 02:17:43,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-26 02:17:43,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-01-26 02:17:43,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 02:17:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-01-26 02:17:43,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=4798, Unknown=0, NotChecked=0, Total=5402 [2024-01-26 02:17:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:43,196 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-01-26 02:17:43,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 6.635135135135135) internal successors, (491), 74 states have internal predecessors, (491), 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) [2024-01-26 02:17:43,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:17:43,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:17:43,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:17:43,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2024-01-26 02:17:43,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2024-01-26 02:17:43,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 78 states. [2024-01-26 02:17:43,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer Found a loop, use abstraction hammer [2024-01-26 02:17:59,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:01,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:04,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:06,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:38,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:40,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:41,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:43,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:45,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:47,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:18:50,139 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 4294967295 c_~n~0))) (let ((.cse2 (mod .cse5 4294967296)) (.cse0 (mod c_~n~0 4294967296))) (and (<= 5 .cse0) (let ((.cse1 (mod (+ |c_thread2Thread1of1ForFork0_~i~1#1| 2) 4294967296))) (or (< .cse0 (+ .cse1 1)) (< .cse1 .cse2))) (= |c_thread1Thread1of1ForFork1_~i~0#1| 4) (let ((.cse3 (mod (+ |c_thread2Thread1of1ForFork0_~i~1#1| 1) 4294967296))) (or (< .cse3 .cse2) (< .cse0 (+ .cse3 1)))) (let ((.cse4 (mod (+ |c_thread2Thread1of1ForFork0_~i~1#1| 3) 4294967296))) (or (< .cse4 .cse2) (< .cse0 (+ .cse4 1)))) (let ((.cse6 (* 4294967296 (div |c_thread2Thread1of1ForFork0_~i~1#1| 4294967296)))) (or (< (+ |c_thread2Thread1of1ForFork0_~i~1#1| (* 4294967296 (div .cse5 4294967296))) (+ 4294967295 .cse6 c_~n~0)) (< (+ .cse6 c_~n~0 4) (+ |c_thread2Thread1of1ForFork0_~i~1#1| (* 4294967296 (div c_~n~0 4294967296)))))) (let ((.cse7 (mod (+ |c_thread2Thread1of1ForFork0_#t~post4#1| 2) 4294967296))) (or (< .cse7 .cse2) (< .cse0 (+ .cse7 1))))))) is different from false [2024-01-26 02:20:40,213 WARN L293 SmtUtils]: Spent 8.39s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-26 02:21:17,464 WARN L293 SmtUtils]: Spent 6.84s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-26 02:21:47,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-26 02:21:59,467 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (mod (+ 4294967295 c_~n~0) 4294967296)) (.cse0 (mod c_~n~0 4294967296)) (.cse3 (mod (+ |c_thread1Thread1of1ForFork1_~i~0#1| 4) 4294967296))) (and (let ((.cse1 (mod (+ |c_thread2Thread1of1ForFork0_~i~1#1| 4) 4294967296))) (or (< .cse0 (+ .cse1 1)) (< .cse1 .cse2))) (<= c_~n~0 (+ 4294967295 (* (div (+ (- 6) c_~n~0) 4294967296) 4294967296))) (or (< .cse3 5) (< 4 (mod (+ 3 |c_thread1Thread1of1ForFork1_~i~0#1|) 4294967296))) (let ((.cse4 (mod (+ |c_thread2Thread1of1ForFork0_~i~1#1| 2) 4294967296))) (or (< .cse0 (+ .cse4 1)) (< .cse4 .cse2))) (let ((.cse5 (mod (+ |c_thread2Thread1of1ForFork0_~i~1#1| 1) 4294967296))) (or (< .cse5 .cse2) (< .cse0 (+ .cse5 1)))) (let ((.cse6 (mod (+ |c_thread2Thread1of1ForFork0_~i~1#1| 3) 4294967296))) (or (< .cse6 .cse2) (< .cse0 (+ .cse6 1)))) (or (< 4 .cse3) (< (mod (+ 5 |c_thread1Thread1of1ForFork1_~i~0#1|) 4294967296) 5)))) is different from false [2024-01-26 02:21:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 02:21:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-26 02:21:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-01-26 02:21:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-01-26 02:21:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-01-26 02:21:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-01-26 02:21:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2024-01-26 02:21:59,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-26 02:21:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-26 02:21:59,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-01-26 02:21:59,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 02:21:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash 486133246, now seen corresponding path program 4 times [2024-01-26 02:21:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 02:21:59,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131684756] [2024-01-26 02:21:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 02:21:59,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 02:22:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2024-01-26 02:30:55,500 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2024-01-26 02:30:55,500 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2024-01-26 02:30:56,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2024-01-26 02:30:56,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown