/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:53:16,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:53:16,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:53:16,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 17:53:16,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 17:53:16,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 17:53:16,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 17:53:16,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 17:53:16,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 17:53:16,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 17:53:16,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 17:53:16,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 17:53:16,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:53:16,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:53:16,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:53:16,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:53:16,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:53:16,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:53:16,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:53:16,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:53:16,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:53:16,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:53:16,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:53:16,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:53:16,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-21 17:53:16,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-21 17:53:16,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-21 17:53:16,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-21 17:53:16,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-21 17:53:16,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-21 17:53:16,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-21 17:53:16,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-21 17:53:16,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-21 17:53:16,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-21 17:53:16,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-21 17:53:16,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-21 17:53:16,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-21 17:53:16,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-21 17:53:16,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:53:16,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:53:16,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:53:16,229 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-Delay.epf [2021-08-21 17:53:16,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:53:16,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:53:16,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:53:16,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:53:16,275 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:53:16,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:53:16,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:53:16,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:53:16,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:53:16,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:53:16,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:53:16,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:53:16,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:53:16,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:53:16,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:53:16,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:53:16,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:53:16,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:53:16,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:53:16,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:53:16,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:53:16,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:53:16,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:53:16,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:53:16,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:53:16,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:53:16,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:53:16,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:53:16,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:53:16,279 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:53:16,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:53:16,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:53:16,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:53:16,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:53:16,615 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 17:53:16,616 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 17:53:16,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl [2021-08-21 17:53:16,617 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2021-08-21 17:53:16,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:53:16,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 17:53:16,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:53:16,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:53:16,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:53:16,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:53:16,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:53:16,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:53:16,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:53:16,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:53:16,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:53:16,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:53:16,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:53:16,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/1) ... [2021-08-21 17:53:16,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:53:16,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:53:16,746 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) [2021-08-21 17:53:16,779 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 [2021-08-21 17:53:16,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 17:53:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 17:53:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 17:53:16,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 17:53:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 17:53:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 17:53:16,798 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 17:53:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:53:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:53:16,798 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-21 17:53:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-21 17:53:16,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-21 17:53:16,799 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-21 17:53:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-21 17:53:16,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-21 17:53:16,801 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:53:17,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:53:17,146 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 17:53:17,154 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:53:17 BoogieIcfgContainer [2021-08-21 17:53:17,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:53:17,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:53:17,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:53:17,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:53:17,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:53:16" (1/2) ... [2021-08-21 17:53:17,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20247f2f and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:53:17, skipping insertion in model container [2021-08-21 17:53:17,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:53:17" (2/2) ... [2021-08-21 17:53:17,161 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2021-08-21 17:53:17,165 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:53:17,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:53:17,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:53:17,166 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:53:17,247 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-21 17:53:17,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:53:17,285 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, mConcurrency=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 [2021-08-21 17:53:17,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-21 17:53:25,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 93964 states, 84120 states have (on average 2.9741203043271516) internal successors, (250183), 93963 states have internal predecessors, (250183), 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) [2021-08-21 17:53:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:53:25,803 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:53:25,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:53:25,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:53:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:53:25,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1562351818, now seen corresponding path program 1 times [2021-08-21 17:53:25,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:53:25,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304402754] [2021-08-21 17:53:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:53:25,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:53:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:53:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:53:26,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:53:26,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304402754] [2021-08-21 17:53:26,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304402754] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:53:26,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:53:26,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 17:53:26,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840402380] [2021-08-21 17:53:26,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 17:53:26,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:53:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 17:53:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:53:26,189 INFO L87 Difference]: Start difference. First operand has 93964 states, 84120 states have (on average 2.9741203043271516) internal successors, (250183), 93963 states have internal predecessors, (250183), 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 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-08-21 17:53:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:53:27,414 INFO L93 Difference]: Finished difference Result 93964 states and 246724 transitions. [2021-08-21 17:53:27,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 17:53:27,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-08-21 17:53:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:53:27,955 INFO L225 Difference]: With dead ends: 93964 [2021-08-21 17:53:27,955 INFO L226 Difference]: Without dead ends: 76287 [2021-08-21 17:53:27,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:53:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76287 states. [2021-08-21 17:53:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76287 to 76287. [2021-08-21 17:53:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76287 states, 76286 states have (on average 2.9089741236924205) internal successors, (221914), 76286 states have internal predecessors, (221914), 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) [2021-08-21 17:53:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76287 states to 76287 states and 221914 transitions. [2021-08-21 17:53:31,415 INFO L78 Accepts]: Start accepts. Automaton has 76287 states and 221914 transitions. Word has length 75 [2021-08-21 17:53:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:53:31,416 INFO L470 AbstractCegarLoop]: Abstraction has 76287 states and 221914 transitions. [2021-08-21 17:53:31,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-08-21 17:53:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 76287 states and 221914 transitions. [2021-08-21 17:53:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:53:31,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:53:31,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:53:31,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:53:31,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:53:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:53:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1499674988, now seen corresponding path program 2 times [2021-08-21 17:53:31,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:53:31,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790591251] [2021-08-21 17:53:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:53:31,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:53:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:53:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:53:31,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:53:31,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790591251] [2021-08-21 17:53:31,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790591251] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:53:31,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:53:31,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 17:53:31,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713675546] [2021-08-21 17:53:31,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 17:53:31,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:53:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 17:53:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:53:31,811 INFO L87 Difference]: Start difference. First operand 76287 states and 221914 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-08-21 17:53:32,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:53:32,488 INFO L93 Difference]: Finished difference Result 76287 states and 218457 transitions. [2021-08-21 17:53:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 17:53:32,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-08-21 17:53:32,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:53:32,805 INFO L225 Difference]: With dead ends: 76287 [2021-08-21 17:53:32,805 INFO L226 Difference]: Without dead ends: 76287 [2021-08-21 17:53:32,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:53:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76287 states. [2021-08-21 17:53:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76287 to 76287. [2021-08-21 17:53:35,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76287 states, 76286 states have (on average 2.863657814015678) internal successors, (218457), 76286 states have internal predecessors, (218457), 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) [2021-08-21 17:53:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76287 states to 76287 states and 218457 transitions. [2021-08-21 17:53:35,291 INFO L78 Accepts]: Start accepts. Automaton has 76287 states and 218457 transitions. Word has length 75 [2021-08-21 17:53:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:53:35,292 INFO L470 AbstractCegarLoop]: Abstraction has 76287 states and 218457 transitions. [2021-08-21 17:53:35,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-08-21 17:53:35,292 INFO L276 IsEmpty]: Start isEmpty. Operand 76287 states and 218457 transitions. [2021-08-21 17:53:35,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:53:35,459 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:53:35,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:53:35,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:53:35,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:53:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:53:35,460 INFO L82 PathProgramCache]: Analyzing trace with hash -260385842, now seen corresponding path program 3 times [2021-08-21 17:53:35,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:53:35,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448821477] [2021-08-21 17:53:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:53:35,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:53:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:53:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:53:35,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:53:35,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448821477] [2021-08-21 17:53:35,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448821477] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:53:35,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:53:35,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:53:35,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017246300] [2021-08-21 17:53:35,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:53:35,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:53:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:53:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:53:35,771 INFO L87 Difference]: Start difference. First operand 76287 states and 218457 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-08-21 17:53:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:53:37,495 INFO L93 Difference]: Finished difference Result 150063 states and 440218 transitions. [2021-08-21 17:53:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:53:37,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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 75 [2021-08-21 17:53:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:53:38,605 INFO L225 Difference]: With dead ends: 150063 [2021-08-21 17:53:38,605 INFO L226 Difference]: Without dead ends: 150063 [2021-08-21 17:53:38,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 78.7ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:53:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150063 states. [2021-08-21 17:53:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150063 to 93361. [2021-08-21 17:53:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93361 states, 93360 states have (on average 2.918444730077121) internal successors, (272466), 93360 states have internal predecessors, (272466), 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) [2021-08-21 17:53:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93361 states to 93361 states and 272466 transitions. [2021-08-21 17:53:42,790 INFO L78 Accepts]: Start accepts. Automaton has 93361 states and 272466 transitions. Word has length 75 [2021-08-21 17:53:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:53:42,791 INFO L470 AbstractCegarLoop]: Abstraction has 93361 states and 272466 transitions. [2021-08-21 17:53:42,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-08-21 17:53:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 93361 states and 272466 transitions. [2021-08-21 17:53:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:53:43,003 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:53:43,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:53:43,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:53:43,004 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:53:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:53:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1331934512, now seen corresponding path program 4 times [2021-08-21 17:53:43,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:53:43,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306797296] [2021-08-21 17:53:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:53:43,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:53:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:53:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:53:43,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:53:43,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306797296] [2021-08-21 17:53:43,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306797296] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:53:43,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:53:43,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:53:43,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140473245] [2021-08-21 17:53:43,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:53:43,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:53:43,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:53:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:53:43,190 INFO L87 Difference]: Start difference. First operand 93361 states and 272466 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-08-21 17:53:45,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:53:45,780 INFO L93 Difference]: Finished difference Result 263653 states and 790663 transitions. [2021-08-21 17:53:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:53:45,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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 75 [2021-08-21 17:53:45,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:53:46,967 INFO L225 Difference]: With dead ends: 263653 [2021-08-21 17:53:46,968 INFO L226 Difference]: Without dead ends: 263603 [2021-08-21 17:53:46,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-08-21 17:53:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263603 states. [2021-08-21 17:53:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263603 to 113711. [2021-08-21 17:53:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113711 states, 113710 states have (on average 2.955764664497406) internal successors, (336100), 113710 states have internal predecessors, (336100), 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) [2021-08-21 17:53:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113711 states to 113711 states and 336100 transitions. [2021-08-21 17:53:52,951 INFO L78 Accepts]: Start accepts. Automaton has 113711 states and 336100 transitions. Word has length 75 [2021-08-21 17:53:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:53:52,951 INFO L470 AbstractCegarLoop]: Abstraction has 113711 states and 336100 transitions. [2021-08-21 17:53:52,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-08-21 17:53:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 113711 states and 336100 transitions. [2021-08-21 17:53:53,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:53:53,239 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:53:53,239 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:53:53,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:53:53,239 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:53:53,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:53:53,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1915978032, now seen corresponding path program 5 times [2021-08-21 17:53:53,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:53:53,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081385534] [2021-08-21 17:53:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:53:53,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:53:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:53:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:53:53,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:53:53,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081385534] [2021-08-21 17:53:53,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081385534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:53:53,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:53:53,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:53:53,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043121338] [2021-08-21 17:53:53,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:53:53,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:53:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:53:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:53:53,528 INFO L87 Difference]: Start difference. First operand 113711 states and 336100 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-08-21 17:53:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:53:56,187 INFO L93 Difference]: Finished difference Result 258142 states and 768631 transitions. [2021-08-21 17:53:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:53:56,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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 75 [2021-08-21 17:53:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:53:57,308 INFO L225 Difference]: With dead ends: 258142 [2021-08-21 17:53:57,308 INFO L226 Difference]: Without dead ends: 258101 [2021-08-21 17:53:57,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.7ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:53:58,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258101 states. [2021-08-21 17:54:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258101 to 148576. [2021-08-21 17:54:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148576 states, 148575 states have (on average 3.010082449941107) internal successors, (447223), 148575 states have internal predecessors, (447223), 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) [2021-08-21 17:54:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148576 states to 148576 states and 447223 transitions. [2021-08-21 17:54:05,341 INFO L78 Accepts]: Start accepts. Automaton has 148576 states and 447223 transitions. Word has length 75 [2021-08-21 17:54:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:05,341 INFO L470 AbstractCegarLoop]: Abstraction has 148576 states and 447223 transitions. [2021-08-21 17:54:05,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-08-21 17:54:05,342 INFO L276 IsEmpty]: Start isEmpty. Operand 148576 states and 447223 transitions. [2021-08-21 17:54:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:54:06,098 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:06,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:54:06,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:54:06,098 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:54:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:06,100 INFO L82 PathProgramCache]: Analyzing trace with hash -144905588, now seen corresponding path program 6 times [2021-08-21 17:54:06,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:06,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902243357] [2021-08-21 17:54:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:06,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:54:06,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:06,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902243357] [2021-08-21 17:54:06,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902243357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:06,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:06,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:54:06,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345214717] [2021-08-21 17:54:06,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:54:06,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:54:06,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:54:06,467 INFO L87 Difference]: Start difference. First operand 148576 states and 447223 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 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) [2021-08-21 17:54:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:12,403 INFO L93 Difference]: Finished difference Result 540853 states and 1658337 transitions. [2021-08-21 17:54:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-21 17:54:12,404 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2021-08-21 17:54:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:16,081 INFO L225 Difference]: With dead ends: 540853 [2021-08-21 17:54:16,081 INFO L226 Difference]: Without dead ends: 540853 [2021-08-21 17:54:16,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 279.1ms TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-08-21 17:54:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540853 states. [2021-08-21 17:54:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540853 to 195112. [2021-08-21 17:54:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195112 states, 195111 states have (on average 3.0272101521697907) internal successors, (590642), 195111 states have internal predecessors, (590642), 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) [2021-08-21 17:54:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195112 states to 195112 states and 590642 transitions. [2021-08-21 17:54:29,025 INFO L78 Accepts]: Start accepts. Automaton has 195112 states and 590642 transitions. Word has length 75 [2021-08-21 17:54:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:29,027 INFO L470 AbstractCegarLoop]: Abstraction has 195112 states and 590642 transitions. [2021-08-21 17:54:29,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 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) [2021-08-21 17:54:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 195112 states and 590642 transitions. [2021-08-21 17:54:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:54:29,853 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:29,853 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:54:29,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:54:29,853 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:54:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:29,854 INFO L82 PathProgramCache]: Analyzing trace with hash -382668916, now seen corresponding path program 7 times [2021-08-21 17:54:29,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:29,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372042218] [2021-08-21 17:54:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:29,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:54:30,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:30,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372042218] [2021-08-21 17:54:30,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372042218] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:30,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:30,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:54:30,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106640326] [2021-08-21 17:54:30,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:54:30,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:54:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:54:30,172 INFO L87 Difference]: Start difference. First operand 195112 states and 590642 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 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) [2021-08-21 17:54:33,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:33,398 INFO L93 Difference]: Finished difference Result 316765 states and 959188 transitions. [2021-08-21 17:54:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:54:33,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2021-08-21 17:54:33,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:36,271 INFO L225 Difference]: With dead ends: 316765 [2021-08-21 17:54:36,271 INFO L226 Difference]: Without dead ends: 314826 [2021-08-21 17:54:36,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:54:37,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314826 states. [2021-08-21 17:54:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314826 to 239881. [2021-08-21 17:54:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239881 states, 239880 states have (on average 3.0380315157578788) internal successors, (728763), 239880 states have internal predecessors, (728763), 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) [2021-08-21 17:54:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239881 states to 239881 states and 728763 transitions. [2021-08-21 17:54:46,609 INFO L78 Accepts]: Start accepts. Automaton has 239881 states and 728763 transitions. Word has length 75 [2021-08-21 17:54:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:46,610 INFO L470 AbstractCegarLoop]: Abstraction has 239881 states and 728763 transitions. [2021-08-21 17:54:46,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 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) [2021-08-21 17:54:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 239881 states and 728763 transitions. [2021-08-21 17:54:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:54:47,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:47,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:54:47,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:54:47,730 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:54:47,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:47,731 INFO L82 PathProgramCache]: Analyzing trace with hash -315706356, now seen corresponding path program 8 times [2021-08-21 17:54:47,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:47,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318841284] [2021-08-21 17:54:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:47,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:54:47,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:47,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318841284] [2021-08-21 17:54:47,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318841284] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:47,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:47,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:54:47,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836007803] [2021-08-21 17:54:47,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:54:47,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:54:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:54:47,993 INFO L87 Difference]: Start difference. First operand 239881 states and 728763 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-08-21 17:54:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:52,036 INFO L93 Difference]: Finished difference Result 418813 states and 1270633 transitions. [2021-08-21 17:54:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:54:52,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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 75 [2021-08-21 17:54:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:54,539 INFO L225 Difference]: With dead ends: 418813 [2021-08-21 17:54:54,540 INFO L226 Difference]: Without dead ends: 418813 [2021-08-21 17:54:54,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:54:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418813 states. [2021-08-21 17:55:06,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418813 to 286624. [2021-08-21 17:55:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286624 states, 286623 states have (on average 3.0767279667019047) internal successors, (881861), 286623 states have internal predecessors, (881861), 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) [2021-08-21 17:55:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286624 states to 286624 states and 881861 transitions. [2021-08-21 17:55:10,275 INFO L78 Accepts]: Start accepts. Automaton has 286624 states and 881861 transitions. Word has length 75 [2021-08-21 17:55:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:55:10,275 INFO L470 AbstractCegarLoop]: Abstraction has 286624 states and 881861 transitions. [2021-08-21 17:55:10,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-08-21 17:55:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 286624 states and 881861 transitions. [2021-08-21 17:55:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:55:11,887 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:55:11,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:55:11,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:55:11,888 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:55:11,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:55:11,889 INFO L82 PathProgramCache]: Analyzing trace with hash 765326252, now seen corresponding path program 9 times [2021-08-21 17:55:11,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:55:11,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926881288] [2021-08-21 17:55:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:55:11,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:55:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:55:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:55:12,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:55:12,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926881288] [2021-08-21 17:55:12,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926881288] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:55:12,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:55:12,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-21 17:55:12,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213448387] [2021-08-21 17:55:12,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-21 17:55:12,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:55:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-21 17:55:12,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:55:12,733 INFO L87 Difference]: Start difference. First operand 286624 states and 881861 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 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) [2021-08-21 17:55:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:55:24,513 INFO L93 Difference]: Finished difference Result 891576 states and 2761689 transitions. [2021-08-21 17:55:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 17:55:24,514 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 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 75 [2021-08-21 17:55:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:55:34,306 INFO L225 Difference]: With dead ends: 891576 [2021-08-21 17:55:34,320 INFO L226 Difference]: Without dead ends: 891576 [2021-08-21 17:55:34,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1017.6ms TimeCoverageRelationStatistics Valid=379, Invalid=811, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 17:55:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891576 states. [2021-08-21 17:55:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891576 to 356085. [2021-08-21 17:55:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356085 states, 356084 states have (on average 3.0752856067669425) internal successors, (1095060), 356084 states have internal predecessors, (1095060), 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) [2021-08-21 17:56:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356085 states to 356085 states and 1095060 transitions. [2021-08-21 17:56:01,627 INFO L78 Accepts]: Start accepts. Automaton has 356085 states and 1095060 transitions. Word has length 75 [2021-08-21 17:56:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:56:01,628 INFO L470 AbstractCegarLoop]: Abstraction has 356085 states and 1095060 transitions. [2021-08-21 17:56:01,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 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) [2021-08-21 17:56:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 356085 states and 1095060 transitions. [2021-08-21 17:56:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-21 17:56:03,845 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:56:03,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:56:03,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:56:03,850 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-21 17:56:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:56:03,851 INFO L82 PathProgramCache]: Analyzing trace with hash 930991378, now seen corresponding path program 10 times [2021-08-21 17:56:03,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:56:03,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116081906] [2021-08-21 17:56:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:56:03,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:56:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:56:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:56:04,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:56:04,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116081906] [2021-08-21 17:56:04,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116081906] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:56:04,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:56:04,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:56:04,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500602916] [2021-08-21 17:56:04,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:56:04,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:56:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:56:04,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:56:04,434 INFO L87 Difference]: Start difference. First operand 356085 states and 1095060 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 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) [2021-08-21 17:56:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:56:08,996 INFO L93 Difference]: Finished difference Result 387893 states and 1188157 transitions. [2021-08-21 17:56:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-21 17:56:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 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 75 [2021-08-21 17:56:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:56:12,876 INFO L225 Difference]: With dead ends: 387893 [2021-08-21 17:56:12,877 INFO L226 Difference]: Without dead ends: 386746 [2021-08-21 17:56:12,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 622.1ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-08-21 17:56:14,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386746 states.