/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/circular_buffer_bad.line255.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-03 14:20:45,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-03 14:20:45,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-03 14:20:45,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-03 14:20:45,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-03 14:20:45,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-03 14:20:45,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-03 14:20:45,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-03 14:20:45,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-03 14:20:45,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-03 14:20:45,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-03 14:20:45,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-03 14:20:45,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-03 14:20:45,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-03 14:20:45,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-03 14:20:45,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-03 14:20:45,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-03 14:20:45,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-03 14:20:45,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-03 14:20:45,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-03 14:20:45,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-03 14:20:45,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-03 14:20:45,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-03 14:20:45,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-03 14:20:45,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-03 14:20:45,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-03 14:20:45,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-03 14:20:45,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-03 14:20:45,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-03 14:20:45,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-03 14:20:45,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-03 14:20:45,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-03 14:20:45,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-03 14:20:45,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-03 14:20:45,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-03 14:20:45,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-03 14:20:45,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-03 14:20:45,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-03 14:20:45,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-03 14:20:45,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-03 14:20:45,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-03 14:20:45,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-03 14:20:45,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-03 14:20:45,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-03 14:20:45,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-03 14:20:45,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-03 14:20:45,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-03 14:20:45,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-03 14:20:45,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-03 14:20:45,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-03 14:20:45,732 INFO L138 SettingsManager]: * Use SBE=true [2022-10-03 14:20:45,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-03 14:20:45,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-03 14:20:45,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-03 14:20:45,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-03 14:20:45,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-03 14:20:45,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-03 14:20:45,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-03 14:20:45,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:20:45,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-03 14:20:45,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-03 14:20:45,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-03 14:20:45,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-03 14:20:45,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-03 14:20:45,736 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-03 14:20:45,736 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-03 14:20:45,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-03 14:20:45,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-03 14:20:45,736 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-03 14:20:45,736 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-03 14:20:45,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-03 14:20:45,736 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-03 14:20:45,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-03 14:20:45,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-03 14:20:45,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-03 14:20:45,978 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-03 14:20:45,979 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-03 14:20:45,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/circular_buffer_bad.line255.bpl [2022-10-03 14:20:45,981 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/circular_buffer_bad.line255.bpl' [2022-10-03 14:20:46,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-03 14:20:46,037 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-03 14:20:46,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-03 14:20:46,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-03 14:20:46,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-03 14:20:46,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/1) ... [2022-10-03 14:20:46,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/1) ... [2022-10-03 14:20:46,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/1) ... [2022-10-03 14:20:46,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/1) ... [2022-10-03 14:20:46,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/1) ... [2022-10-03 14:20:46,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/1) ... [2022-10-03 14:20:46,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/1) ... [2022-10-03 14:20:46,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-03 14:20:46,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-03 14:20:46,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-03 14:20:46,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-03 14:20:46,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/1) ... [2022-10-03 14:20:46,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-03 14:20:46,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:46,163 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) [2022-10-03 14:20:46,168 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 [2022-10-03 14:20:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-10-03 14:20:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-10-03 14:20:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-10-03 14:20:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-10-03 14:20:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-03 14:20:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-03 14:20:46,199 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-03 14:20:46,341 INFO L234 CfgBuilder]: Building ICFG [2022-10-03 14:20:46,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-03 14:20:46,618 INFO L275 CfgBuilder]: Performing block encoding [2022-10-03 14:20:46,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-03 14:20:46,634 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-03 14:20:46,636 INFO L202 PluginConnector]: Adding new model circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:20:46 BoogieIcfgContainer [2022-10-03 14:20:46,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-03 14:20:46,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-03 14:20:46,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-03 14:20:46,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-03 14:20:46,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 02:20:46" (1/2) ... [2022-10-03 14:20:46,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404d35cf and model type circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:20:46, skipping insertion in model container [2022-10-03 14:20:46,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "circular_buffer_bad.line255.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:20:46" (2/2) ... [2022-10-03 14:20:46,660 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.line255.bpl [2022-10-03 14:20:46,666 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-03 14:20:46,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-03 14:20:46,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-03 14:20:46,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-03 14:20:46,816 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-03 14:20:46,867 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:20:46,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:20:46,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:46,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:20:46,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-03 14:20:46,972 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:20:46,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 14:20:46,983 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;@7e9c7ceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:20:46,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:20:47,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 14:20:47,347 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-03 14:20:47,350 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (1/4) [2022-10-03 14:20:47,359 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:20:47,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:20:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:47,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:20:47,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-10-03 14:20:47,401 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:20:47,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-03 14:20:47,402 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;@7e9c7ceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:20:47,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:20:47,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-03 14:20:47,407 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-03 14:20:47,407 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4) [2022-10-03 14:20:47,411 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:20:47,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:20:47,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:47,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:20:47,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-10-03 14:20:47,531 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:20:47,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Err0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:20:47,532 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;@7e9c7ceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:20:47,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:20:47,532 WARN L124 DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly. [2022-10-03 14:20:47,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-03 14:20:47,533 INFO L444 BasicCegarLoop]: Path program histogram: [] [2022-10-03 14:20:47,533 INFO L307 ceAbstractionStarter]: Result for error location t1Err0ASSERT_VIOLATIONASSERT was SAFE (3/4) [2022-10-03 14:20:47,536 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-03 14:20:47,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-03 14:20:47,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:47,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-03 14:20:47,559 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-03 14:20:47,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Err0ASSERT_VIOLATIONASSERT ======== [2022-10-03 14:20:47,560 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;@7e9c7ceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-03 14:20:47,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-03 14:20:47,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-10-03 14:20:47,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:20:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:20:47,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1803079637, now seen corresponding path program 1 times [2022-10-03 14:20:47,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:20:47,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287111097] [2022-10-03 14:20:47,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:47,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:20:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:20:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:20:48,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:20:48,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287111097] [2022-10-03 14:20:48,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287111097] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:20:48,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:20:48,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-10-03 14:20:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145643928] [2022-10-03 14:20:48,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:20:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-03 14:20:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:20:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-03 14:20:48,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-10-03 14:20:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:20:48,793 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:20:48,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.7) internal successors, (154), 21 states have internal predecessors, (154), 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) [2022-10-03 14:20:48,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:20:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:20:49,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-03 14:20:49,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:20:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:20:49,717 INFO L85 PathProgramCache]: Analyzing trace with hash 859864420, now seen corresponding path program 1 times [2022-10-03 14:20:49,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:20:49,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511697633] [2022-10-03 14:20:49,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:49,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:20:49,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-03 14:20:49,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245430200] [2022-10-03 14:20:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:20:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:49,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:20:49,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-03 14:20:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:20:49,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-03 14:20:49,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:20:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:20:50,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:20:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:20:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:20:50,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511697633] [2022-10-03 14:20:50,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-03 14:20:50,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245430200] [2022-10-03 14:20:50,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245430200] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-03 14:20:50,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 14:20:50,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-03 14:20:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776182524] [2022-10-03 14:20:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:20:50,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-03 14:20:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:20:50,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-03 14:20:50,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-03 14:20:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:20:50,093 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:20:50,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2022-10-03 14:20:50,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:20:50,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:20:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:20:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:20:50,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-03 14:20:50,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:20:50,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:20:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:20:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1694217426, now seen corresponding path program 1 times [2022-10-03 14:20:50,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:20:50,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765763862] [2022-10-03 14:20:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:20:50,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-03 14:20:50,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075050697] [2022-10-03 14:20:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:50,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:20:50,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:50,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:20:50,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-03 14:20:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:20:50,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-03 14:20:50,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:20:50,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 14:20:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-03 14:20:50,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-03 14:20:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:20:50,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765763862] [2022-10-03 14:20:50,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-03 14:20:50,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075050697] [2022-10-03 14:20:50,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075050697] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-03 14:20:50,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-03 14:20:50,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-03 14:20:50,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063955808] [2022-10-03 14:20:50,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:20:50,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-03 14:20:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:20:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-03 14:20:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-03 14:20:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:20:50,987 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:20:50,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 7 states have internal predecessors, (255), 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) [2022-10-03 14:20:50,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:20:50,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:20:50,988 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:20:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:20:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:20:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-03 14:20:51,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-03 14:20:51,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:20:51,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:20:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:20:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1218438285, now seen corresponding path program 1 times [2022-10-03 14:20:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:20:51,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400575594] [2022-10-03 14:20:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:20:51,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-03 14:20:51,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011039148] [2022-10-03 14:20:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:51,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:20:51,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:51,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:20:51,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-03 14:20:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:20:51,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-03 14:20:51,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:20:51,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-03 14:20:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 72 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-03 14:20:51,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:20:51,887 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:20:51,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 8 [2022-10-03 14:20:51,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2022-10-03 14:20:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-03 14:20:51,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:20:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400575594] [2022-10-03 14:20:51,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-03 14:20:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011039148] [2022-10-03 14:20:51,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011039148] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-03 14:20:51,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-03 14:20:51,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-10-03 14:20:51,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606037929] [2022-10-03 14:20:51,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-03 14:20:51,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-03 14:20:51,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:20:51,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-03 14:20:51,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-03 14:20:51,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:20:51,951 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:20:51,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2022-10-03 14:20:51,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:20:51,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:20:51,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-03 14:20:51,953 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:20:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:20:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:20:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-03 14:20:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-03 14:20:52,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-03 14:20:52,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:20:52,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:20:52,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:20:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1585852981, now seen corresponding path program 1 times [2022-10-03 14:20:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:20:52,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568252886] [2022-10-03 14:20:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:52,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:20:52,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-03 14:20:52,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336933127] [2022-10-03 14:20:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:20:52,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:20:52,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:20:52,303 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:20:52,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-03 14:20:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:20:52,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-03 14:20:52,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:20:53,088 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-03 14:20:53,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-03 14:20:53,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 14:20:53,237 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-03 14:20:53,237 INFO L390 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 11 treesize of output 11 [2022-10-03 14:20:53,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 14:20:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-03 14:20:54,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:21:01,969 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:21:01,969 INFO L390 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 70 treesize of output 72 [2022-10-03 14:21:02,129 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:21:02,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 128 [2022-10-03 14:21:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-03 14:21:02,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:21:02,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568252886] [2022-10-03 14:21:02,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-03 14:21:02,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336933127] [2022-10-03 14:21:02,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336933127] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 14:21:02,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-03 14:21:02,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 37 [2022-10-03 14:21:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891816689] [2022-10-03 14:21:02,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-03 14:21:02,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-10-03 14:21:02,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:21:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-10-03 14:21:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-10-03 14:21:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:21:02,363 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:21:02,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 13.594594594594595) internal successors, (503), 38 states have internal predecessors, (503), 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) [2022-10-03 14:21:02,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:21:02,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:21:02,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-03 14:21:02,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-03 14:21:02,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:21:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:21:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:21:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-03 14:21:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-03 14:21:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-03 14:21:04,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-03 14:21:04,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:21:04,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:21:04,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:21:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash 421087615, now seen corresponding path program 1 times [2022-10-03 14:21:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:21:04,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921177134] [2022-10-03 14:21:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:21:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:21:04,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-03 14:21:04,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504716401] [2022-10-03 14:21:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:21:04,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:21:04,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:21:04,304 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:21:04,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-03 14:21:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-03 14:21:04,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 84 conjunts are in the unsatisfiable core [2022-10-03 14:21:04,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:21:04,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-10-03 14:21:04,809 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-03 14:21:04,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-03 14:21:04,915 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-03 14:21:04,916 INFO L390 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 11 treesize of output 11 [2022-10-03 14:21:05,167 INFO L390 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 13 treesize of output 15 [2022-10-03 14:21:05,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 20 treesize of output 15 [2022-10-03 14:21:05,805 INFO L390 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 13 treesize of output 15 [2022-10-03 14:21:06,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 18 treesize of output 13 [2022-10-03 14:21:06,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 13 [2022-10-03 14:21:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 26 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-03 14:21:06,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:21:07,833 WARN L833 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int)) (not (= (+ 1 |c_t2Thread1of1ForFork1_~i~1#1|) (select (select (store |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_t1Thread1of1ForFork0_write~int_#ptr#1.base| (store (select |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_t1Thread1of1ForFork0_write~int_#ptr#1.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| |c_t1Thread1of1ForFork0_write~int_#value#1|)) |c_~#buffer~0.base|) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|)))) is different from false [2022-10-03 14:21:43,182 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256) 127))) (and (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int)) (not (= (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse0) (or (not .cse0) (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int)) (not (= (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))))) is different from false [2022-10-03 14:21:43,248 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256) 127))) (and (or .cse0 (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_t1Thread1of1ForFork0_write~int_#ptr#1.base| (store (select |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_t1Thread1of1ForFork0_write~int_#ptr#1.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| |c_t1Thread1of1ForFork0_write~int_#value#1|)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))) (or (not .cse0) (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_t1Thread1of1ForFork0_write~int_#ptr#1.base| (store (select |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_t1Thread1of1ForFork0_write~int_#ptr#1.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| |c_t1Thread1of1ForFork0_write~int_#value#1|)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))))) is different from false [2022-10-03 14:21:43,307 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (<= (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256) 127))) (let ((.cse0 (not .cse1)) (.cse2 (<= (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256) 127))) (and (or (and (or .cse0 (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_~#buffer~0.base| (store (select |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))) (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_~#buffer~0.base| (store (select |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse1)) (not .cse2)) (or (and (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_~#buffer~0.base| (store (select |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (- 256) (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse0) (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_~#buffer~0.base| (store (select |c_t1Thread1of1ForFork0_write~int_old_#memory_int#1| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (- 256) (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse1)) .cse2)))) is different from false [2022-10-03 14:21:43,359 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256) 127))) (let ((.cse1 (not .cse0)) (.cse2 (<= (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256) 127))) (and (or (and (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse0) (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse1)) (not .cse2)) (or (and (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (- 256) (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse0) (or .cse1 (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (- 256) (mod |c_t1Thread1of1ForFork0_insertLogElement_~b#1| 256)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))))) .cse2)))) is different from false [2022-10-03 14:21:43,418 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256) 127))) (let ((.cse1 (not .cse0)) (.cse2 (<= (mod |c_t1Thread1of1ForFork0_insertLogElement_#in~b#1| 256) 127))) (and (or (and (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (- 256) (mod |c_t1Thread1of1ForFork0_insertLogElement_#in~b#1| 256)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse0) (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (- 256) (mod |c_t1Thread1of1ForFork0_insertLogElement_#in~b#1| 256)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse1)) .cse2) (or (and (or .cse1 (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod |c_t1Thread1of1ForFork0_insertLogElement_#in~b#1| 256))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))) (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod |c_t1Thread1of1ForFork0_insertLogElement_#in~b#1| 256))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse0)) (not .cse2))))) is different from false [2022-10-03 14:21:43,536 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (<= (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256) 127))) (let ((.cse0 (not .cse1)) (.cse2 (<= (mod |c_t1Thread1of1ForFork0_~i~0#1| 256) 127))) (and (or (and (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse0) (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse1)) (not .cse2)) (or (and (or .cse1 (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_4 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (mod |c_t1Thread1of1ForFork0_~i~0#1| 256) (- 256)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_4 (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))) (or (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (mod |c_t1Thread1of1ForFork0_~i~0#1| 256) (- 256)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 (mod (+ 2 |c_t1Thread1of1ForFork0_~i~0#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) .cse0)) .cse2)))) is different from false [2022-10-03 14:21:43,964 WARN L833 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (store |c_#memory_int| |c_~#buffer~0.base| (store (select |c_#memory_int| |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| 0)) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 2) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) is different from false [2022-10-03 14:21:43,976 WARN L833 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_405 (Array Int Int)) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (let ((.cse0 (store |c_ULTIMATE.start_write~int_old_#memory_int#1| |c_ULTIMATE.start_write~int_#ptr#1.base| v_ArrVal_405))) (store .cse0 |c_~#buffer~0.base| (store (select .cse0 |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| 0))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 2) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) is different from false [2022-10-03 14:21:43,986 WARN L833 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_405 (Array Int Int)) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (let ((.cse0 (store |c_ULTIMATE.start_write~int_old_#memory_int#1| |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_405))) (store .cse0 |c_~#buffer~0.base| (store (select .cse0 |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| 0))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 2) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) is different from false [2022-10-03 14:21:43,992 WARN L833 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_405 (Array Int Int)) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= 1 (select (store (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_405))) (store .cse0 |c_~#buffer~0.base| (store (select .cse0 |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| 0))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 2) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|)))) is different from false [2022-10-03 14:21:44,021 WARN L833 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_405 (Array Int Int)) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int)) (not (= (select (store (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_405))) (store .cse0 |c_~#buffer~0.base| (store (select .cse0 |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| 0))) |c_ULTIMATE.start_#Ultimate.allocOnStack_#res#1.base| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 2) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1))) is different from false [2022-10-03 14:21:44,245 WARN L833 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_405 (Array Int Int)) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int) (v_subst_3 Int) (v_ArrVal_404 Int) (|v_ULTIMATE.start_#Ultimate.allocOnStack_#res#1.base_18| Int)) (or (not (= (select (store |c_ULTIMATE.start_#Ultimate.allocOnStack_old_#valid#1| |c_ULTIMATE.start_#Ultimate.allocOnStack_#res#1.base| v_ArrVal_404) |v_ULTIMATE.start_#Ultimate.allocOnStack_#res#1.base_18|) 0)) (not (= (select (store (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.allocOnStack_#res#1.base| v_ArrVal_405))) (store .cse0 |c_~#buffer~0.base| (store (select .cse0 |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| 0))) |v_ULTIMATE.start_#Ultimate.allocOnStack_#res#1.base_18| v_ArrVal_408) |c_~#buffer~0.base|) v_subst_3 2) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))) is different from false [2022-10-03 14:21:44,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 73 treesize of output 71 [2022-10-03 14:21:44,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 71 treesize of output 67 [2022-10-03 14:21:44,865 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-03 14:21:44,865 INFO L390 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 13 treesize of output 12 [2022-10-03 14:21:44,906 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 26 proven. 78 refuted. 6 times theorem prover too weak. 0 trivial. 61 not checked. [2022-10-03 14:21:44,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:21:44,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921177134] [2022-10-03 14:21:44,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-03 14:21:44,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504716401] [2022-10-03 14:21:44,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504716401] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 14:21:44,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-03 14:21:44,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44] total 84 [2022-10-03 14:21:44,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889433301] [2022-10-03 14:21:44,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-03 14:21:44,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-10-03 14:21:44,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:21:44,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-10-03 14:21:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4661, Unknown=86, NotChecked=1950, Total=6972 [2022-10-03 14:21:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:21:44,910 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:21:44,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 8.0) internal successors, (672), 84 states have internal predecessors, (672), 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) [2022-10-03 14:21:44,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:21:44,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:21:44,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-10-03 14:21:44,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-03 14:21:44,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-10-03 14:21:44,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:21:57,894 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 77 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-03 14:22:03,218 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 54 DAG size of output: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-03 14:22:07,055 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_t1Thread1of1ForFork0_~i~0#1| 1) (not (= |c_ULTIMATE.start_main_~#id2~0#1.base| 3)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| |c_~#buffer~0.base|)) (or (let ((.cse0 (<= (mod (+ 2 |c_t1Thread1of1ForFork0_#t~post3#1|) 256) 127))) (and (or (not .cse0) (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int)) (not (= (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (mod (+ 2 |c_t1Thread1of1ForFork0_#t~post3#1|) 256)) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))) (or .cse0 (forall ((|t1Thread1of1ForFork0_write~int_#ptr#1.offset| Int) (v_ArrVal_408 (Array Int Int)) (|t2Thread1of1ForFork1_read~int_#ptr#1.offset| Int)) (not (= (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_408) |c_~#buffer~0.base|) |t1Thread1of1ForFork0_write~int_#ptr#1.offset| (+ (- 256) (mod (+ 2 |c_t1Thread1of1ForFork0_#t~post3#1|) 256))) |t2Thread1of1ForFork1_read~int_#ptr#1.offset|) 1)))))) (not (<= (mod c_~send~0 256) 0))) (= c_~send~0 0) (= 3 |c_~#buffer~0.base|)) is different from false [2022-10-03 14:22:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:22:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:22:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-03 14:22:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-03 14:22:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-03 14:22:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-10-03 14:22:07,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-03 14:22:07,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:22:07,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONASSERT === [t1Err0ASSERT_VIOLATIONASSERT] === [2022-10-03 14:22:07,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-03 14:22:07,723 INFO L85 PathProgramCache]: Analyzing trace with hash 649210975, now seen corresponding path program 2 times [2022-10-03 14:22:07,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-03 14:22:07,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012629125] [2022-10-03 14:22:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-03 14:22:07,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-03 14:22:07,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-03 14:22:07,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187875949] [2022-10-03 14:22:07,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-03 14:22:07,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-03 14:22:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-03 14:22:07,745 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-03 14:22:07,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-03 14:22:07,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-03 14:22:07,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-03 14:22:07,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-03 14:22:07,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-03 14:22:08,214 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-03 14:22:08,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-03 14:22:08,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 14:22:08,338 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-03 14:22:08,338 INFO L390 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 11 treesize of output 11 [2022-10-03 14:22:08,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-10-03 14:22:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-10-03 14:22:10,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-03 14:22:20,064 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:22:20,065 INFO L390 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 70 treesize of output 72 [2022-10-03 14:22:20,260 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-03 14:22:20,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 128 [2022-10-03 14:22:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-10-03 14:22:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-03 14:22:20,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012629125] [2022-10-03 14:22:20,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-03 14:22:20,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187875949] [2022-10-03 14:22:20,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187875949] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-03 14:22:20,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-03 14:22:20,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 35 [2022-10-03 14:22:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065262517] [2022-10-03 14:22:20,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-03 14:22:20,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-10-03 14:22:20,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-03 14:22:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-10-03 14:22:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2022-10-03 14:22:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:22:20,557 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-03 14:22:20,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 14.8) internal successors, (518), 36 states have internal predecessors, (518), 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) [2022-10-03 14:22:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-10-03 14:22:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-03 14:22:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-03 14:22:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-10-03 14:22:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-10-03 14:22:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-10-03 14:22:20,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-03 14:23:38,257 WARN L233 SmtUtils]: Spent 15.59s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)