/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/commit-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 16:39:24,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 16:39:24,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 16:39:24,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 16:39:24,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 16:39:24,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 16:39:24,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 16:39:24,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 16:39:24,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 16:39:24,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 16:39:24,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 16:39:24,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 16:39:24,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 16:39:24,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 16:39:24,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 16:39:24,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 16:39:24,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 16:39:24,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 16:39:24,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 16:39:24,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 16:39:24,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 16:39:24,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 16:39:24,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 16:39:24,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 16:39:24,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 16:39:24,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 16:39:24,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 16:39:24,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 16:39:24,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 16:39:24,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 16:39:24,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 16:39:24,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 16:39:24,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 16:39:24,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 16:39:24,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 16:39:24,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 16:39:24,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 16:39:24,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 16:39:24,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 16:39:24,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 16:39:24,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 16:39:24,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 16:39:24,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 16:39:24,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 16:39:24,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 16:39:24,220 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 16:39:24,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 16:39:24,220 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 16:39:24,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 16:39:24,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 16:39:24,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 16:39:24,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 16:39:24,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 16:39:24,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 16:39:24,221 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 16:39:24,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 16:39:24,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 16:39:24,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 16:39:24,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 16:39:24,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 16:39:24,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 16:39:24,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 16:39:24,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 16:39:24,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 16:39:24,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 16:39:24,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 16:39:24,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 16:39:24,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 16:39:24,223 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 16:39:24,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 16:39:24,223 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 16:39:24,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 16:39:24,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 16:39:24,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 16:39:24,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 16:39:24,479 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 16:39:24,484 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 16:39:24,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/commit-2.wvr.bpl [2022-01-18 16:39:24,485 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/commit-2.wvr.bpl' [2022-01-18 16:39:24,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 16:39:24,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 16:39:24,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 16:39:24,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 16:39:24,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 16:39:24,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,539 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 16:39:24,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 16:39:24,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 16:39:24,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 16:39:24,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 16:39:24,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 16:39:24,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 16:39:24,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 16:39:24,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 16:39:24,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/1) ... [2022-01-18 16:39:24,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 16:39:24,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:24,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 16:39:24,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 16:39:24,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 16:39:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 16:39:24,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 16:39:24,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 16:39:24,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 16:39:24,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 16:39:24,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 16:39:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 16:39:24,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 16:39:24,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 16:39:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 16:39:24,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 16:39:24,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-01-18 16:39:24,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 16:39:24,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 16:39:24,630 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 16:39:24,677 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 16:39:24,678 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 16:39:24,833 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 16:39:24,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 16:39:24,940 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-18 16:39:24,940 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-01-18 16:39:24,951 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2022-01-18 16:39:24,951 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2022-01-18 16:39:24,951 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread4EXIT is neither atomic block end nor error location. [2022-01-18 16:39:24,952 INFO L202 PluginConnector]: Adding new model commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:39:24 BoogieIcfgContainer [2022-01-18 16:39:24,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 16:39:24,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 16:39:24,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 16:39:24,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 16:39:24,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:39:24" (1/2) ... [2022-01-18 16:39:24,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cd0ad8 and model type commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 04:39:24, skipping insertion in model container [2022-01-18 16:39:24,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:39:24" (2/2) ... [2022-01-18 16:39:24,964 INFO L111 eAbstractionObserver]: Analyzing ICFG commit-2.wvr.bpl [2022-01-18 16:39:24,968 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 16:39:24,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 16:39:24,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 16:39:24,969 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 16:39:25,025 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 16:39:25,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 16:39:25,088 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 16:39:25,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 16:39:25,100 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 25 transitions, 82 flow [2022-01-18 16:39:25,129 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49 states, 48 states have (on average 3.4375) internal successors, (165), 48 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 48 states have (on average 3.4375) internal successors, (165), 48 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 16:39:25,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:25,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:25,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:25,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash -407233692, now seen corresponding path program 1 times [2022-01-18 16:39:25,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:25,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636156811] [2022-01-18 16:39:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:25,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:25,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636156811] [2022-01-18 16:39:25,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636156811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 16:39:25,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 16:39:25,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 16:39:25,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954053896] [2022-01-18 16:39:25,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 16:39:25,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 16:39:25,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:25,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 16:39:25,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 16:39:25,296 INFO L87 Difference]: Start difference. First operand has 49 states, 48 states have (on average 3.4375) internal successors, (165), 48 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:25,340 INFO L93 Difference]: Finished difference Result 94 states and 326 transitions. [2022-01-18 16:39:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 16:39:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 16:39:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:25,353 INFO L225 Difference]: With dead ends: 94 [2022-01-18 16:39:25,353 INFO L226 Difference]: Without dead ends: 89 [2022-01-18 16:39:25,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 16:39:25,358 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:25,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:39:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-18 16:39:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-01-18 16:39:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 3.5454545454545454) internal successors, (312), 88 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 312 transitions. [2022-01-18 16:39:25,425 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 312 transitions. Word has length 15 [2022-01-18 16:39:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:25,426 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 312 transitions. [2022-01-18 16:39:25,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 312 transitions. [2022-01-18 16:39:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 16:39:25,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:25,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:25,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 16:39:25,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash 261214271, now seen corresponding path program 1 times [2022-01-18 16:39:25,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:25,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632954554] [2022-01-18 16:39:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:25,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:25,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:25,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632954554] [2022-01-18 16:39:25,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632954554] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:39:25,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347427622] [2022-01-18 16:39:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:25,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:25,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:39:25,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 16:39:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:25,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 16:39:25,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:39:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:25,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:39:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:25,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347427622] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:39:25,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:39:25,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-01-18 16:39:25,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598119547] [2022-01-18 16:39:25,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:39:25,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 16:39:25,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:25,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 16:39:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 16:39:25,871 INFO L87 Difference]: Start difference. First operand 89 states and 312 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:25,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:25,932 INFO L93 Difference]: Finished difference Result 120 states and 425 transitions. [2022-01-18 16:39:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 16:39:25,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 16:39:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:25,937 INFO L225 Difference]: With dead ends: 120 [2022-01-18 16:39:25,938 INFO L226 Difference]: Without dead ends: 106 [2022-01-18 16:39:25,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 16:39:25,940 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:25,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 17 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:39:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-18 16:39:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2022-01-18 16:39:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 3.5542168674698793) internal successors, (295), 83 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 295 transitions. [2022-01-18 16:39:25,955 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 295 transitions. Word has length 16 [2022-01-18 16:39:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:25,956 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 295 transitions. [2022-01-18 16:39:25,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 295 transitions. [2022-01-18 16:39:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 16:39:25,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:25,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:25,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 16:39:26,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:26,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:26,174 INFO L85 PathProgramCache]: Analyzing trace with hash 758068569, now seen corresponding path program 1 times [2022-01-18 16:39:26,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:26,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375666434] [2022-01-18 16:39:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:26,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:26,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:26,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375666434] [2022-01-18 16:39:26,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375666434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 16:39:26,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 16:39:26,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 16:39:26,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729595586] [2022-01-18 16:39:26,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 16:39:26,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 16:39:26,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 16:39:26,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 16:39:26,227 INFO L87 Difference]: Start difference. First operand 84 states and 295 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:26,253 INFO L93 Difference]: Finished difference Result 129 states and 418 transitions. [2022-01-18 16:39:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 16:39:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 16:39:26,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:26,255 INFO L225 Difference]: With dead ends: 129 [2022-01-18 16:39:26,255 INFO L226 Difference]: Without dead ends: 121 [2022-01-18 16:39:26,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 16:39:26,257 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:26,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 13 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:39:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-18 16:39:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 98. [2022-01-18 16:39:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 3.4742268041237114) internal successors, (337), 97 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 337 transitions. [2022-01-18 16:39:26,269 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 337 transitions. Word has length 16 [2022-01-18 16:39:26,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:26,269 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 337 transitions. [2022-01-18 16:39:26,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 337 transitions. [2022-01-18 16:39:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 16:39:26,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:26,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:26,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 16:39:26,271 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1696560475, now seen corresponding path program 1 times [2022-01-18 16:39:26,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:26,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117735167] [2022-01-18 16:39:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:26,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:26,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117735167] [2022-01-18 16:39:26,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117735167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 16:39:26,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 16:39:26,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 16:39:26,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139405699] [2022-01-18 16:39:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 16:39:26,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 16:39:26,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:26,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 16:39:26,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 16:39:26,301 INFO L87 Difference]: Start difference. First operand 98 states and 337 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:26,324 INFO L93 Difference]: Finished difference Result 76 states and 237 transitions. [2022-01-18 16:39:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 16:39:26,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 16:39:26,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:26,326 INFO L225 Difference]: With dead ends: 76 [2022-01-18 16:39:26,326 INFO L226 Difference]: Without dead ends: 64 [2022-01-18 16:39:26,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 16:39:26,327 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:26,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:39:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-18 16:39:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-01-18 16:39:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 3.3015873015873014) internal successors, (208), 63 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 208 transitions. [2022-01-18 16:39:26,333 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 208 transitions. Word has length 16 [2022-01-18 16:39:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:26,334 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 208 transitions. [2022-01-18 16:39:26,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 208 transitions. [2022-01-18 16:39:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 16:39:26,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:26,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:26,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 16:39:26,335 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1156129383, now seen corresponding path program 1 times [2022-01-18 16:39:26,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:26,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007407240] [2022-01-18 16:39:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:26,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:26,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:26,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007407240] [2022-01-18 16:39:26,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007407240] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:39:26,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582546752] [2022-01-18 16:39:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:26,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:26,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:26,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:39:26,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 16:39:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:26,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 16:39:26,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:39:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:26,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:39:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:26,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582546752] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:39:26,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:39:26,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-01-18 16:39:26,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938675449] [2022-01-18 16:39:26,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:39:26,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 16:39:26,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 16:39:26,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 16:39:26,620 INFO L87 Difference]: Start difference. First operand 64 states and 208 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:26,668 INFO L93 Difference]: Finished difference Result 115 states and 389 transitions. [2022-01-18 16:39:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 16:39:26,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 16:39:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:26,671 INFO L225 Difference]: With dead ends: 115 [2022-01-18 16:39:26,671 INFO L226 Difference]: Without dead ends: 108 [2022-01-18 16:39:26,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 16:39:26,673 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:26,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:39:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-18 16:39:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-01-18 16:39:26,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 3.4299065420560746) internal successors, (367), 107 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 367 transitions. [2022-01-18 16:39:26,697 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 367 transitions. Word has length 16 [2022-01-18 16:39:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:26,697 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 367 transitions. [2022-01-18 16:39:26,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,697 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 367 transitions. [2022-01-18 16:39:26,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 16:39:26,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:26,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:26,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 16:39:26,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:26,916 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:26,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1480829340, now seen corresponding path program 1 times [2022-01-18 16:39:26,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:26,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875517893] [2022-01-18 16:39:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:26,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:39:26,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:26,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875517893] [2022-01-18 16:39:26,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875517893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 16:39:26,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 16:39:26,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 16:39:26,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679186956] [2022-01-18 16:39:26,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 16:39:26,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 16:39:26,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 16:39:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 16:39:26,965 INFO L87 Difference]: Start difference. First operand 108 states and 367 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:26,982 INFO L93 Difference]: Finished difference Result 57 states and 166 transitions. [2022-01-18 16:39:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 16:39:26,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 16:39:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:26,983 INFO L225 Difference]: With dead ends: 57 [2022-01-18 16:39:26,984 INFO L226 Difference]: Without dead ends: 54 [2022-01-18 16:39:26,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 16:39:26,985 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:26,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:39:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-18 16:39:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-01-18 16:39:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 53 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 161 transitions. [2022-01-18 16:39:26,990 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 161 transitions. Word has length 17 [2022-01-18 16:39:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:26,990 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 161 transitions. [2022-01-18 16:39:26,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 161 transitions. [2022-01-18 16:39:26,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 16:39:26,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:26,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:26,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 16:39:26,991 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:26,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:26,992 INFO L85 PathProgramCache]: Analyzing trace with hash -452888174, now seen corresponding path program 2 times [2022-01-18 16:39:26,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:26,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390492215] [2022-01-18 16:39:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:26,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:27,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:27,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390492215] [2022-01-18 16:39:27,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390492215] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:39:27,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735221155] [2022-01-18 16:39:27,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:39:27,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:27,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:27,051 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:39:27,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 16:39:27,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:39:27,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:39:27,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 16:39:27,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:39:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:27,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:39:27,365 INFO L387 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 6 treesize of output 4 [2022-01-18 16:39:27,406 INFO L387 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 6 treesize of output 4 [2022-01-18 16:39:27,532 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:27,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 142 [2022-01-18 16:39:27,560 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:27,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 134 [2022-01-18 16:39:28,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:28,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735221155] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:39:28,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:39:28,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-01-18 16:39:28,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230022257] [2022-01-18 16:39:28,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:39:28,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 16:39:28,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 16:39:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 16:39:28,296 INFO L87 Difference]: Start difference. First operand 54 states and 161 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:28,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:28,446 INFO L93 Difference]: Finished difference Result 132 states and 435 transitions. [2022-01-18 16:39:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 16:39:28,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 16:39:28,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:28,448 INFO L225 Difference]: With dead ends: 132 [2022-01-18 16:39:28,448 INFO L226 Difference]: Without dead ends: 122 [2022-01-18 16:39:28,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 16:39:28,450 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:28,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 39 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 16:39:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-18 16:39:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2022-01-18 16:39:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 3.4158415841584158) internal successors, (345), 101 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 345 transitions. [2022-01-18 16:39:28,471 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 345 transitions. Word has length 17 [2022-01-18 16:39:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:28,472 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 345 transitions. [2022-01-18 16:39:28,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 345 transitions. [2022-01-18 16:39:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 16:39:28,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:28,476 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:28,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 16:39:28,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:28,691 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1154074671, now seen corresponding path program 3 times [2022-01-18 16:39:28,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:28,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129098920] [2022-01-18 16:39:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:28,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:28,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:28,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129098920] [2022-01-18 16:39:28,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129098920] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:39:28,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159649909] [2022-01-18 16:39:28,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:39:28,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:28,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:28,766 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:39:28,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 16:39:28,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 16:39:28,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:39:28,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 16:39:28,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:39:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:29,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:39:29,341 INFO L387 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 271 treesize of output 269 [2022-01-18 16:39:29,353 INFO L387 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 269 treesize of output 267 [2022-01-18 16:39:29,668 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:29,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 235 treesize of output 237 [2022-01-18 16:39:29,677 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:29,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 223 [2022-01-18 16:39:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:30,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159649909] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:39:30,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:39:30,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-01-18 16:39:30,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993429106] [2022-01-18 16:39:30,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:39:30,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 16:39:30,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 16:39:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-18 16:39:30,375 INFO L87 Difference]: Start difference. First operand 102 states and 345 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:30,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:30,517 INFO L93 Difference]: Finished difference Result 106 states and 325 transitions. [2022-01-18 16:39:30,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 16:39:30,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 16:39:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:30,518 INFO L225 Difference]: With dead ends: 106 [2022-01-18 16:39:30,518 INFO L226 Difference]: Without dead ends: 98 [2022-01-18 16:39:30,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-18 16:39:30,519 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:30,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 63 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-01-18 16:39:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-01-18 16:39:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2022-01-18 16:39:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 3.2048192771084336) internal successors, (266), 83 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 266 transitions. [2022-01-18 16:39:30,522 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 266 transitions. Word has length 18 [2022-01-18 16:39:30,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:30,523 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 266 transitions. [2022-01-18 16:39:30,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 266 transitions. [2022-01-18 16:39:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 16:39:30,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:30,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:30,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 16:39:30,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:30,738 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:30,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:30,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2059011589, now seen corresponding path program 1 times [2022-01-18 16:39:30,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:30,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350806213] [2022-01-18 16:39:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:30,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:30,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350806213] [2022-01-18 16:39:30,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350806213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:39:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672392570] [2022-01-18 16:39:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:30,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:30,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:30,791 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) [2022-01-18 16:39:30,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 16:39:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:30,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 16:39:30,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:39:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:31,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:39:31,221 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:31,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 292 treesize of output 286 [2022-01-18 16:39:31,227 INFO L387 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 259 treesize of output 257 [2022-01-18 16:39:31,233 INFO L387 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 257 treesize of output 255 [2022-01-18 16:39:31,239 INFO L387 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 255 treesize of output 253 [2022-01-18 16:39:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:31,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672392570] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:39:31,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:39:31,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-01-18 16:39:31,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861646293] [2022-01-18 16:39:31,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:39:31,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 16:39:31,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 16:39:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 16:39:31,854 INFO L87 Difference]: Start difference. First operand 84 states and 266 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:31,960 INFO L93 Difference]: Finished difference Result 98 states and 279 transitions. [2022-01-18 16:39:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 16:39:31,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 16:39:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:31,961 INFO L225 Difference]: With dead ends: 98 [2022-01-18 16:39:31,962 INFO L226 Difference]: Without dead ends: 86 [2022-01-18 16:39:31,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-18 16:39:31,964 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:31,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 54 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-01-18 16:39:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-18 16:39:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2022-01-18 16:39:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 3.0259740259740258) internal successors, (233), 77 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 233 transitions. [2022-01-18 16:39:31,968 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 233 transitions. Word has length 18 [2022-01-18 16:39:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:31,968 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 233 transitions. [2022-01-18 16:39:31,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 233 transitions. [2022-01-18 16:39:31,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 16:39:31,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:31,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:31,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 16:39:32,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:32,170 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:32,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:32,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1536312159, now seen corresponding path program 1 times [2022-01-18 16:39:32,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:32,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361431737] [2022-01-18 16:39:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:32,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:32,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:32,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361431737] [2022-01-18 16:39:32,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361431737] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:39:32,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744371766] [2022-01-18 16:39:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:32,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:32,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:32,234 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) [2022-01-18 16:39:32,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 16:39:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:32,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 16:39:32,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:39:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:32,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:39:32,613 INFO L387 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 271 treesize of output 269 [2022-01-18 16:39:32,619 INFO L387 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 269 treesize of output 267 [2022-01-18 16:39:32,627 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:32,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 288 treesize of output 282 [2022-01-18 16:39:32,636 INFO L387 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 255 treesize of output 253 [2022-01-18 16:39:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:33,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744371766] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:39:33,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:39:33,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-01-18 16:39:33,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45014182] [2022-01-18 16:39:33,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:39:33,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 16:39:33,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 16:39:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 16:39:33,276 INFO L87 Difference]: Start difference. First operand 78 states and 233 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:33,325 INFO L93 Difference]: Finished difference Result 86 states and 241 transitions. [2022-01-18 16:39:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 16:39:33,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 16:39:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:33,326 INFO L225 Difference]: With dead ends: 86 [2022-01-18 16:39:33,326 INFO L226 Difference]: Without dead ends: 78 [2022-01-18 16:39:33,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-18 16:39:33,327 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:33,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 39 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-01-18 16:39:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-01-18 16:39:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-01-18 16:39:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.9220779220779223) internal successors, (225), 77 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 225 transitions. [2022-01-18 16:39:33,330 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 225 transitions. Word has length 18 [2022-01-18 16:39:33,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:33,330 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 225 transitions. [2022-01-18 16:39:33,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:33,330 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 225 transitions. [2022-01-18 16:39:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 16:39:33,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:33,331 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:33,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 16:39:33,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:33,539 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1312081678, now seen corresponding path program 4 times [2022-01-18 16:39:33,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:33,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324097641] [2022-01-18 16:39:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:33,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:33,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:33,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324097641] [2022-01-18 16:39:33,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324097641] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:39:33,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309444456] [2022-01-18 16:39:33,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:39:33,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:33,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:33,639 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) [2022-01-18 16:39:33,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 16:39:33,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:39:33,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:39:33,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 16:39:33,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:39:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:33,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:39:34,358 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:34,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 386 treesize of output 388 [2022-01-18 16:39:34,369 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:34,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 380 treesize of output 382 [2022-01-18 16:39:34,753 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:34,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 183 [2022-01-18 16:39:34,773 INFO L353 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2022-01-18 16:39:34,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 173 [2022-01-18 16:39:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:35,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309444456] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:39:35,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:39:35,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-01-18 16:39:35,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855747780] [2022-01-18 16:39:35,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:39:35,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 16:39:35,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:39:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 16:39:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-18 16:39:35,378 INFO L87 Difference]: Start difference. First operand 78 states and 225 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:39:35,889 INFO L93 Difference]: Finished difference Result 336 states and 1139 transitions. [2022-01-18 16:39:35,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 16:39:35,889 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 16:39:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:39:35,891 INFO L225 Difference]: With dead ends: 336 [2022-01-18 16:39:35,892 INFO L226 Difference]: Without dead ends: 317 [2022-01-18 16:39:35,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-01-18 16:39:35,892 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 172 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:39:35,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 129 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 16:39:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-01-18 16:39:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 154. [2022-01-18 16:39:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 3.810457516339869) internal successors, (583), 153 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 583 transitions. [2022-01-18 16:39:35,902 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 583 transitions. Word has length 19 [2022-01-18 16:39:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:39:35,902 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 583 transitions. [2022-01-18 16:39:35,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:39:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 583 transitions. [2022-01-18 16:39:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 16:39:35,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:39:35,903 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:39:35,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 16:39:36,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:36,116 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:39:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:39:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 241399932, now seen corresponding path program 2 times [2022-01-18 16:39:36,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:39:36,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898433516] [2022-01-18 16:39:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:39:36,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:39:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:39:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:36,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:39:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898433516] [2022-01-18 16:39:36,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898433516] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:39:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808374722] [2022-01-18 16:39:36,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:39:36,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:39:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:39:36,178 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) [2022-01-18 16:39:36,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 16:39:36,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:39:36,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:39:36,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 16:39:36,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:39:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:39:36,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:39:37,294 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:37,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 500 treesize of output 504 [2022-01-18 16:39:37,312 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:37,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 496 treesize of output 504 [2022-01-18 16:39:40,058 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:40,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 359 treesize of output 357 [2022-01-18 16:39:40,265 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:39:40,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 349 treesize of output 661 [2022-01-18 16:43:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:43:51,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808374722] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:43:51,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:43:51,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2022-01-18 16:43:51,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849720285] [2022-01-18 16:43:51,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:43:51,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 16:43:51,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:43:51,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 16:43:51,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-01-18 16:43:51,068 INFO L87 Difference]: Start difference. First operand 154 states and 583 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:43:51,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:43:51,234 INFO L93 Difference]: Finished difference Result 212 states and 794 transitions. [2022-01-18 16:43:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 16:43:51,235 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 16:43:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:43:51,236 INFO L225 Difference]: With dead ends: 212 [2022-01-18 16:43:51,236 INFO L226 Difference]: Without dead ends: 207 [2022-01-18 16:43:51,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-18 16:43:51,237 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:43:51,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 121 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-01-18 16:43:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-18 16:43:51,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 166. [2022-01-18 16:43:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 3.8727272727272726) internal successors, (639), 165 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:43:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 639 transitions. [2022-01-18 16:43:51,242 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 639 transitions. Word has length 19 [2022-01-18 16:43:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:43:51,243 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 639 transitions. [2022-01-18 16:43:51,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:43:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 639 transitions. [2022-01-18 16:43:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 16:43:51,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:43:51,244 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:43:51,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 16:43:51,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 16:43:51,459 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:43:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:43:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2019269519, now seen corresponding path program 5 times [2022-01-18 16:43:51,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:43:51,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079230248] [2022-01-18 16:43:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:43:51,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:43:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:43:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:43:51,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:43:51,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079230248] [2022-01-18 16:43:51,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079230248] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:43:51,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934063573] [2022-01-18 16:43:51,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:43:51,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:43:51,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:43:51,611 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) [2022-01-18 16:43:51,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 16:43:51,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 16:43:51,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:43:51,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 16:43:51,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:43:51,821 INFO L387 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 7 treesize of output 3 [2022-01-18 16:43:51,830 INFO L387 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 7 treesize of output 3 [2022-01-18 16:43:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:43:51,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:43:53,204 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:43:53,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 540 treesize of output 542 [2022-01-18 16:43:53,216 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:43:53,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 534 treesize of output 536 [2022-01-18 16:43:53,896 INFO L353 Elim1Store]: treesize reduction 18, result has 67.3 percent of original size [2022-01-18 16:43:53,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 341 treesize of output 345 [2022-01-18 16:43:53,924 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-18 16:43:53,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 309 treesize of output 303 [2022-01-18 16:43:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:43:55,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934063573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:43:55,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:43:55,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2022-01-18 16:43:55,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622076341] [2022-01-18 16:43:55,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:43:55,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 16:43:55,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:43:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 16:43:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-01-18 16:43:55,051 INFO L87 Difference]: Start difference. First operand 166 states and 639 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:43:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:43:56,436 INFO L93 Difference]: Finished difference Result 635 states and 2293 transitions. [2022-01-18 16:43:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 16:43:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 16:43:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:43:56,442 INFO L225 Difference]: With dead ends: 635 [2022-01-18 16:43:56,442 INFO L226 Difference]: Without dead ends: 611 [2022-01-18 16:43:56,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2022-01-18 16:43:56,443 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 377 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 16:43:56,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 165 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 16:43:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-01-18 16:43:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 261. [2022-01-18 16:43:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 4.257692307692308) internal successors, (1107), 260 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:43:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 1107 transitions. [2022-01-18 16:43:56,454 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 1107 transitions. Word has length 20 [2022-01-18 16:43:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:43:56,454 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 1107 transitions. [2022-01-18 16:43:56,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:43:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 1107 transitions. [2022-01-18 16:43:56,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 16:43:56,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:43:56,455 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:43:56,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 16:43:56,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 16:43:56,663 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:43:56,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:43:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1141462811, now seen corresponding path program 2 times [2022-01-18 16:43:56,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:43:56,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402633239] [2022-01-18 16:43:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:43:56,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:43:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:43:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:43:56,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:43:56,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402633239] [2022-01-18 16:43:56,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402633239] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:43:56,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266947912] [2022-01-18 16:43:56,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:43:56,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:43:56,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:43:56,767 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) [2022-01-18 16:43:56,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 16:43:56,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:43:56,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:43:56,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 16:43:56,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:43:57,001 INFO L387 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 7 treesize of output 3 [2022-01-18 16:43:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:43:57,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:43:58,420 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:43:58,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 540 treesize of output 546 [2022-01-18 16:43:58,430 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:43:58,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 522 treesize of output 524 [2022-01-18 16:44:00,913 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:44:00,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 319 treesize of output 541 [2022-01-18 16:44:00,933 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:44:00,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 289 treesize of output 287 [2022-01-18 16:46:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:46:06,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266947912] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:46:06,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:46:06,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-01-18 16:46:06,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392296068] [2022-01-18 16:46:06,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:46:06,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 16:46:06,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:46:06,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 16:46:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-18 16:46:06,224 INFO L87 Difference]: Start difference. First operand 261 states and 1107 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:24,192 WARN L228 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 164 DAG size of output: 151 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 16:47:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:47:24,573 INFO L93 Difference]: Finished difference Result 1041 states and 4175 transitions. [2022-01-18 16:47:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 16:47:24,574 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 16:47:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:47:24,584 INFO L225 Difference]: With dead ends: 1041 [2022-01-18 16:47:24,584 INFO L226 Difference]: Without dead ends: 1021 [2022-01-18 16:47:24,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 78.7s TimeCoverageRelationStatistics Valid=254, Invalid=676, Unknown=0, NotChecked=0, Total=930 [2022-01-18 16:47:24,585 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 242 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:47:24,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 223 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 254 Invalid, 0 Unknown, 210 Unchecked, 0.2s Time] [2022-01-18 16:47:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-01-18 16:47:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 404. [2022-01-18 16:47:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 4.7890818858560795) internal successors, (1930), 403 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1930 transitions. [2022-01-18 16:47:24,604 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1930 transitions. Word has length 20 [2022-01-18 16:47:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:47:24,604 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 1930 transitions. [2022-01-18 16:47:24,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1930 transitions. [2022-01-18 16:47:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 16:47:24,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:47:24,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:47:24,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-01-18 16:47:24,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 16:47:24,820 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:47:24,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:47:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash 190706723, now seen corresponding path program 3 times [2022-01-18 16:47:24,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:47:24,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511810681] [2022-01-18 16:47:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:47:24,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:47:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:47:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:24,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:47:24,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511810681] [2022-01-18 16:47:24,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511810681] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:47:24,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334662165] [2022-01-18 16:47:24,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:47:24,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:47:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:47:24,902 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:47:24,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 16:47:24,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 16:47:24,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:47:24,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 16:47:24,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:47:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:25,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:47:25,912 INFO L353 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-01-18 16:47:25,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 574 treesize of output 557 [2022-01-18 16:47:25,923 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:25,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 546 treesize of output 550 [2022-01-18 16:47:26,766 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:26,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 307 treesize of output 307 [2022-01-18 16:47:26,793 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:26,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 299 treesize of output 281 [2022-01-18 16:47:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:28,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334662165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:47:28,087 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:47:28,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-01-18 16:47:28,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444178417] [2022-01-18 16:47:28,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:47:28,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 16:47:28,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:47:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 16:47:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-01-18 16:47:28,088 INFO L87 Difference]: Start difference. First operand 404 states and 1930 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:47:29,754 INFO L93 Difference]: Finished difference Result 1607 states and 6957 transitions. [2022-01-18 16:47:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 16:47:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 16:47:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:47:29,766 INFO L225 Difference]: With dead ends: 1607 [2022-01-18 16:47:29,766 INFO L226 Difference]: Without dead ends: 1582 [2022-01-18 16:47:29,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2022-01-18 16:47:29,767 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 346 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:47:29,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 197 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 229 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-01-18 16:47:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-01-18 16:47:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 690. [2022-01-18 16:47:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 5.201741654571843) internal successors, (3584), 689 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 3584 transitions. [2022-01-18 16:47:29,798 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 3584 transitions. Word has length 20 [2022-01-18 16:47:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:47:29,798 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 3584 transitions. [2022-01-18 16:47:29,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 3584 transitions. [2022-01-18 16:47:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 16:47:29,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:47:29,801 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:47:29,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 16:47:30,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 16:47:30,014 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:47:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:47:30,014 INFO L85 PathProgramCache]: Analyzing trace with hash 56649189, now seen corresponding path program 4 times [2022-01-18 16:47:30,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:47:30,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586954775] [2022-01-18 16:47:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:47:30,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:47:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:47:30,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:30,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:47:30,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586954775] [2022-01-18 16:47:30,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586954775] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:47:30,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054647131] [2022-01-18 16:47:30,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:47:30,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:47:30,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:47:30,107 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:47:30,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 16:47:30,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:47:30,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:47:30,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 16:47:30,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:47:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:30,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:47:31,376 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:31,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 572 treesize of output 572 [2022-01-18 16:47:31,395 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:31,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 564 treesize of output 574 [2022-01-18 16:47:31,430 INFO L353 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-01-18 16:47:31,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 550 treesize of output 532 [2022-01-18 16:47:31,452 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:31,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 506 treesize of output 506 [2022-01-18 16:47:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:35,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054647131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:47:35,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:47:35,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-01-18 16:47:35,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992944709] [2022-01-18 16:47:35,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:47:35,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 16:47:35,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:47:35,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 16:47:35,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-01-18 16:47:35,642 INFO L87 Difference]: Start difference. First operand 690 states and 3584 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:47:35,905 INFO L93 Difference]: Finished difference Result 757 states and 3796 transitions. [2022-01-18 16:47:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 16:47:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 16:47:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:47:35,910 INFO L225 Difference]: With dead ends: 757 [2022-01-18 16:47:35,910 INFO L226 Difference]: Without dead ends: 752 [2022-01-18 16:47:35,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-01-18 16:47:35,911 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:47:35,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 98 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 16:47:35,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-01-18 16:47:35,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 691. [2022-01-18 16:47:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 5.201449275362319) internal successors, (3589), 690 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 3589 transitions. [2022-01-18 16:47:35,932 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 3589 transitions. Word has length 20 [2022-01-18 16:47:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:47:35,932 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 3589 transitions. [2022-01-18 16:47:35,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 3589 transitions. [2022-01-18 16:47:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 16:47:35,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:47:35,934 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:47:35,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 16:47:36,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 16:47:36,147 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:47:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:47:36,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1852142980, now seen corresponding path program 3 times [2022-01-18 16:47:36,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:47:36,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430514057] [2022-01-18 16:47:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:47:36,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:47:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:47:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:36,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:47:36,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430514057] [2022-01-18 16:47:36,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430514057] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:47:36,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987955923] [2022-01-18 16:47:36,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:47:36,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:47:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:47:36,321 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:47:36,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 16:47:36,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 16:47:36,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:47:36,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 16:47:36,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:47:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:36,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:47:38,484 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:38,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 609 treesize of output 617 [2022-01-18 16:47:38,496 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:38,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 593 treesize of output 591 [2022-01-18 16:47:40,175 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:47:40,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 414 treesize of output 402 [2022-01-18 16:47:40,227 INFO L353 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-01-18 16:47:40,227 INFO L387 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 394 treesize of output 402 [2022-01-18 16:47:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:48,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987955923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:47:48,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:47:48,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 20 [2022-01-18 16:47:48,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528842665] [2022-01-18 16:47:48,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:47:48,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 16:47:48,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:47:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 16:47:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-01-18 16:47:48,003 INFO L87 Difference]: Start difference. First operand 691 states and 3589 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:47:55,058 INFO L93 Difference]: Finished difference Result 1772 states and 7883 transitions. [2022-01-18 16:47:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 16:47:55,059 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 16:47:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:47:55,070 INFO L225 Difference]: With dead ends: 1772 [2022-01-18 16:47:55,071 INFO L226 Difference]: Without dead ends: 1750 [2022-01-18 16:47:55,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=422, Invalid=984, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 16:47:55,072 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 366 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 16:47:55,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 263 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 16:47:55,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2022-01-18 16:47:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 803. [2022-01-18 16:47:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 5.331670822942644) internal successors, (4276), 802 states have internal predecessors, (4276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 4276 transitions. [2022-01-18 16:47:55,110 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 4276 transitions. Word has length 21 [2022-01-18 16:47:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:47:55,110 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 4276 transitions. [2022-01-18 16:47:55,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:47:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 4276 transitions. [2022-01-18 16:47:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 16:47:55,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:47:55,115 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:47:55,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 16:47:55,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 16:47:55,335 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 16:47:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:47:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash -20666016, now seen corresponding path program 5 times [2022-01-18 16:47:55,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:47:55,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857621484] [2022-01-18 16:47:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:47:55,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:47:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:47:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:47:55,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:47:55,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857621484] [2022-01-18 16:47:55,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857621484] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:47:55,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460432497] [2022-01-18 16:47:55,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:47:55,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:47:55,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:47:55,465 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:47:55,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 16:47:55,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 16:47:55,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:47:55,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 16:47:55,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:47:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:47:55,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:48:02,143 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:48:02,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 980 treesize of output 2676 [2022-01-18 16:48:02,439 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 16:48:02,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 928 treesize of output 932 Received shutdown request... [2022-01-18 16:52:59,116 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-18 16:52:59,118 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-01-18 16:52:59,129 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 16:52:59,129 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 16:52:59,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 16:52:59,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:52:59,319 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. [2022-01-18 16:52:59,320 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-18 16:52:59,321 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-18 16:52:59,321 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-18 16:52:59,321 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-18 16:52:59,323 INFO L732 BasicCegarLoop]: Path program histogram: [5, 5, 3, 1, 1, 1, 1, 1] [2022-01-18 16:52:59,325 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 16:52:59,325 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 16:52:59,327 INFO L202 PluginConnector]: Adding new model commit-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 04:52:59 BasicIcfg [2022-01-18 16:52:59,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 16:52:59,327 INFO L158 Benchmark]: Toolchain (without parser) took 814813.65ms. Allocated memory was 377.5MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 338.8MB in the beginning and 717.5MB in the end (delta: -378.7MB). Peak memory consumption was 870.4MB. Max. memory is 16.0GB. [2022-01-18 16:52:59,328 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 377.5MB. Free memory is still 340.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 16:52:59,328 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.45ms. Allocated memory is still 377.5MB. Free memory was 338.8MB in the beginning and 337.3MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 16:52:59,328 INFO L158 Benchmark]: Boogie Preprocessor took 16.49ms. Allocated memory is still 377.5MB. Free memory was 337.3MB in the beginning and 336.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 16:52:59,328 INFO L158 Benchmark]: RCFGBuilder took 392.57ms. Allocated memory is still 377.5MB. Free memory was 336.1MB in the beginning and 352.2MB in the end (delta: -16.1MB). Peak memory consumption was 21.4MB. Max. memory is 16.0GB. [2022-01-18 16:52:59,328 INFO L158 Benchmark]: TraceAbstraction took 814373.56ms. Allocated memory was 377.5MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 352.2MB in the beginning and 717.5MB in the end (delta: -365.4MB). Peak memory consumption was 880.5MB. Max. memory is 16.0GB. [2022-01-18 16:52:59,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 377.5MB. Free memory is still 340.3MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.45ms. Allocated memory is still 377.5MB. Free memory was 338.8MB in the beginning and 337.3MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.49ms. Allocated memory is still 377.5MB. Free memory was 337.3MB in the beginning and 336.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 392.57ms. Allocated memory is still 377.5MB. Free memory was 336.1MB in the beginning and 352.2MB in the end (delta: -16.1MB). Peak memory consumption was 21.4MB. Max. memory is 16.0GB. * TraceAbstraction took 814373.56ms. Allocated memory was 377.5MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 352.2MB in the beginning and 717.5MB in the end (delta: -365.4MB). Peak memory consumption was 880.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 34 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 814.2s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 90.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1827 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1827 mSDsluCounter, 1476 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 315 IncrementalHoareTripleChecker+Unchecked, 2317 mSDsCounter, 303 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1955 IncrementalHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 303 mSolverCounterUnsat, 207 mSDtfsCounter, 1955 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 618 GetRequests, 395 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 92.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=803occurred in iteration=17, InterpolantAutomatonStates: 164, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 3158 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 415.9s InterpolantComputationTime, 548 NumberOfCodeBlocks, 548 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 747 ConstructedInterpolants, 24 QuantifiedInterpolants, 21910 SizeOfPredicates, 224 NumberOfNonLiveVariables, 892 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 43 InterpolantComputations, 4 PerfectInterpolantSequences, 28/214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown