/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION --traceabstraction.trace.refinement.strategy BADGER -s ../../../trunk/examples/settings/gemcutter/SleepMap-ConcreteSmt-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_good-10.line341.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-e57bdd3-m [2022-10-21 13:27:42,178 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2022-10-21 13:27:42,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-21 13:27:42,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-21 13:27:42,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-21 13:27:42,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/SleepMap-ConcreteSmt-VarAbsGlobalSyntactic.epf [2022-10-21 13:27:42,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-21 13:27:42,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-21 13:27:42,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-21 13:27:42,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-21 13:27:42,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-21 13:27:42,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-21 13:27:42,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-21 13:27:42,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-21 13:27:42,242 INFO L138 SettingsManager]: * Use SBE=true [2022-10-21 13:27:42,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-21 13:27:42,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-21 13:27:42,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-21 13:27:42,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-21 13:27:42,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-21 13:27:42,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-21 13:27:42,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-21 13:27:42,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-21 13:27:42,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-21 13:27:42,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-21 13:27:42,243 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-21 13:27:42,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-21 13:27:42,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-21 13:27:42,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-21 13:27:42,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-21 13:27:42,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-21 13:27:42,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 13:27:42,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-21 13:27:42,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-21 13:27:42,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-21 13:27:42,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-21 13:27:42,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-21 13:27:42,245 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-21 13:27:42,245 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-21 13:27:42,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-21 13:27:42,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-21 13:27:42,246 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-21 13:27:42,246 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-21 13:27:42,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-21 13:27:42,246 INFO L138 SettingsManager]: * Number of independence relations to use for POR=2 [2022-10-21 13:27:42,246 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> BADGER [2022-10-21 13:27:42,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-21 13:27:42,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-21 13:27:42,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-21 13:27:42,528 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-21 13:27:42,544 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-21 13:27:42,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_good-10.line341.bpl [2022-10-21 13:27:42,546 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_good-10.line341.bpl' [2022-10-21 13:27:42,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-21 13:27:42,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-10-21 13:27:42,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-21 13:27:42,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-21 13:27:42,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-21 13:27:42,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,611 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-10-21 13:27:42,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-21 13:27:42,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-21 13:27:42,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-21 13:27:42,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-21 13:27:42,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-21 13:27:42,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-21 13:27:42,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-21 13:27:42,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-21 13:27:42,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/1) ... [2022-10-21 13:27:42,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 13:27:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:42,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:42,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-21 13:27:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-10-21 13:27:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-10-21 13:27:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-21 13:27:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-21 13:27:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-10-21 13:27:42,746 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-10-21 13:27:42,747 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-21 13:27:42,885 INFO L234 CfgBuilder]: Building ICFG [2022-10-21 13:27:42,887 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-21 13:27:43,123 INFO L275 CfgBuilder]: Performing block encoding [2022-10-21 13:27:43,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-21 13:27:43,131 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-21 13:27:43,134 INFO L202 PluginConnector]: Adding new model reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 01:27:43 BoogieIcfgContainer [2022-10-21 13:27:43,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-21 13:27:43,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-21 13:27:43,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-21 13:27:43,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-21 13:27:43,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:42" (1/2) ... [2022-10-21 13:27:43,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5826621 and model type reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 01:27:43, skipping insertion in model container [2022-10-21 13:27:43,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_good-10.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 01:27:43" (2/2) ... [2022-10-21 13:27:43,140 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-10.line341.bpl [2022-10-21 13:27:43,145 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-21 13:27:43,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-21 13:27:43,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-21 13:27:43,151 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-21 13:27:43,194 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-21 13:27:43,225 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:43,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:43,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:43,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-10-21 13:27:43,260 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:43,286 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:43,286 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:43,286 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:43,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:27:43,301 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:43,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:43,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:43,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1974668939, now seen corresponding path program 1 times [2022-10-21 13:27:43,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:43,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665226706] [2022-10-21 13:27:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:43,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:43,875 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:43,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665226706] [2022-10-21 13:27:43,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665226706] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:43,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:43,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 13:27:43,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782004279] [2022-10-21 13:27:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:43,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 13:27:43,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 13:27:43,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 13:27:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:43,942 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:43,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:43,943 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:44,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-21 13:27:44,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash -587936416, now seen corresponding path program 1 times [2022-10-21 13:27:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:44,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266534784] [2022-10-21 13:27:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:44,558 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:44,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266534784] [2022-10-21 13:27:44,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266534784] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:44,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:44,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 13:27:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469025148] [2022-10-21 13:27:44,559 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:44,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 13:27:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:44,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 13:27:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 13:27:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:44,564 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:44,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:44,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-21 13:27:45,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:27:45,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-21 13:27:45,031 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-21 13:27:45,032 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:27:45,036 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:45,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:45,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:45,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:45,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-10-21 13:27:45,095 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:45,096 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:45,096 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:45,096 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:45,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:45,097 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:45,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:45,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1589632993, now seen corresponding path program 1 times [2022-10-21 13:27:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:45,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200352747] [2022-10-21 13:27:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:27:45,179 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:45,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200352747] [2022-10-21 13:27:45,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200352747] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:45,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:45,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:27:45,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3641523] [2022-10-21 13:27:45,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:45,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:27:45,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:45,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:27:45,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:27:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,181 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:45,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:45,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-21 13:27:45,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1940432930, now seen corresponding path program 1 times [2022-10-21 13:27:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:45,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207914549] [2022-10-21 13:27:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:27:45,229 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:45,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207914549] [2022-10-21 13:27:45,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207914549] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:45,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:45,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:27:45,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383300425] [2022-10-21 13:27:45,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:27:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:45,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:27:45,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:27:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,231 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:45,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:45,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-21 13:27:45,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1417268467, now seen corresponding path program 1 times [2022-10-21 13:27:45,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569111770] [2022-10-21 13:27:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:27:45,341 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:45,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569111770] [2022-10-21 13:27:45,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569111770] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:45,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:45,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:27:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703425714] [2022-10-21 13:27:45,342 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:45,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:27:45,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:27:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:27:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,343 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:45,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:45,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:45,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:45,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:45,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-21 13:27:45,420 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 13:27:45,420 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 13:27:45,429 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:45,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:45,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:45,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:45,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-10-21 13:27:45,434 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:45,435 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:45,435 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:45,435 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:45,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:45,436 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:45,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:45,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1575308874, now seen corresponding path program 1 times [2022-10-21 13:27:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:45,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717393068] [2022-10-21 13:27:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:45,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:45,508 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:27:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:45,565 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:27:45,565 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:27:45,566 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:45,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-21 13:27:45,567 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:27:45,568 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 13:27:45,568 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:27:45,568 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-21 13:27:45,593 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-10-21 13:27:45,598 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:45,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:45,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:45,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:45,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-10-21 13:27:45,603 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:45,604 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:45,604 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:45,604 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:45,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:27:45,605 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:45,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:45,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 115330389, now seen corresponding path program 1 times [2022-10-21 13:27:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:45,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414307374] [2022-10-21 13:27:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:45,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:45,794 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:45,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414307374] [2022-10-21 13:27:45,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414307374] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:45,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:45,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 13:27:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498279011] [2022-10-21 13:27:45,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:45,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 13:27:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 13:27:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 13:27:45,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:45,796 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:45,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:45,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:46,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:46,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-21 13:27:46,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:46,014 INFO L85 PathProgramCache]: Analyzing trace with hash 473748212, now seen corresponding path program 1 times [2022-10-21 13:27:46,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:46,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589765709] [2022-10-21 13:27:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:46,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:46,205 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:46,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589765709] [2022-10-21 13:27:46,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589765709] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:46,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:46,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 13:27:46,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346474998] [2022-10-21 13:27:46,205 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:46,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 13:27:46,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 13:27:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 13:27:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:46,206 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:46,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:46,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:46,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:27:46,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-21 13:27:46,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:46,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:46,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1939363156, now seen corresponding path program 1 times [2022-10-21 13:27:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:46,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529473005] [2022-10-21 13:27:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:46,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:46,954 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:46,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529473005] [2022-10-21 13:27:46,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529473005] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:46,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:46,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-21 13:27:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919563735] [2022-10-21 13:27:46,955 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-21 13:27:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:46,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-21 13:27:46,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-21 13:27:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:46,956 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:46,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:46,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:46,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:27:46,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:27:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-21 13:27:47,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:27:47,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-21 13:27:47,689 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 13:27:47,690 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:27:47,692 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:47,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:47,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:47,709 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:47,709 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:47,710 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:47,710 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:47,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:47,710 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:47,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:47,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-10-21 13:27:47,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1602782562, now seen corresponding path program 1 times [2022-10-21 13:27:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:47,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6570518] [2022-10-21 13:27:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:47,782 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:27:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:47,825 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:27:47,826 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:27:47,826 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:47,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-21 13:27:47,827 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:27:47,827 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-10-21 13:27:47,827 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:27:47,827 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-21 13:27:47,842 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-10-21 13:27:47,844 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:47,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:47,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:47,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:47,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-10-21 13:27:47,849 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:47,850 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:47,850 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:47,850 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:47,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:27:47,851 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:47,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:47,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:47,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:47,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2084097717, now seen corresponding path program 1 times [2022-10-21 13:27:47,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:47,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18364261] [2022-10-21 13:27:47,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:47,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:47,994 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18364261] [2022-10-21 13:27:47,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18364261] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:47,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:47,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 13:27:47,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894233492] [2022-10-21 13:27:47,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:47,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 13:27:47,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 13:27:47,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 13:27:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:47,996 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:47,996 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:48,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-21 13:27:48,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:48,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1608777352, now seen corresponding path program 1 times [2022-10-21 13:27:48,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:48,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470478400] [2022-10-21 13:27:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:48,335 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470478400] [2022-10-21 13:27:48,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470478400] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:48,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:48,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 13:27:48,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243813056] [2022-10-21 13:27:48,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:48,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 13:27:48,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:48,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 13:27:48,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 13:27:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:48,336 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:48,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:48,337 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:48,337 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:27:48,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-21 13:27:48,758 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2001533412, now seen corresponding path program 1 times [2022-10-21 13:27:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:48,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376529133] [2022-10-21 13:27:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:48,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:48,990 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:48,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376529133] [2022-10-21 13:27:48,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376529133] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:48,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:48,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-21 13:27:48,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113208246] [2022-10-21 13:27:48,990 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:48,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-21 13:27:48,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-21 13:27:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-21 13:27:48,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:48,992 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:48,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:48,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:48,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:27:48,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:27:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:27:50,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-21 13:27:50,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:50,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:50,218 INFO L85 PathProgramCache]: Analyzing trace with hash 963761969, now seen corresponding path program 1 times [2022-10-21 13:27:50,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:50,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216202274] [2022-10-21 13:27:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:50,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:50,591 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:50,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216202274] [2022-10-21 13:27:50,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216202274] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:50,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:50,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-10-21 13:27:50,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620773246] [2022-10-21 13:27:50,591 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:50,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-21 13:27:50,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:50,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-21 13:27:50,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-10-21 13:27:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:50,593 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:50,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.526315789473684) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:50,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:50,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:27:50,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:27:50,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:27:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:27:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:27:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-21 13:27:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:27:55,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-21 13:27:55,110 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-21 13:27:55,110 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:27:55,112 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:55,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:55,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:55,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2022-10-21 13:27:55,117 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:55,117 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:55,118 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:55,118 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:55,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:55,118 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:55,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:55,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:55,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:55,193 INFO L85 PathProgramCache]: Analyzing trace with hash 204565472, now seen corresponding path program 1 times [2022-10-21 13:27:55,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:55,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111335025] [2022-10-21 13:27:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:55,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 13:27:55,209 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111335025] [2022-10-21 13:27:55,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111335025] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:55,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:55,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:27:55,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726427924] [2022-10-21 13:27:55,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:55,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:27:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:27:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:27:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,211 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:55,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:55,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-21 13:27:55,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:55,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1508959201, now seen corresponding path program 1 times [2022-10-21 13:27:55,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:55,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073812646] [2022-10-21 13:27:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:55,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 13:27:55,249 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:55,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073812646] [2022-10-21 13:27:55,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073812646] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:55,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:55,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:27:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212973198] [2022-10-21 13:27:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:55,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:27:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:27:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:27:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,252 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:55,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:55,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:55,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-21 13:27:55,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:55,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:55,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1749751284, now seen corresponding path program 1 times [2022-10-21 13:27:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:55,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692297156] [2022-10-21 13:27:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:55,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 13:27:55,354 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:55,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692297156] [2022-10-21 13:27:55,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692297156] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:55,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:55,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:27:55,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666242801] [2022-10-21 13:27:55,355 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:55,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:27:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:55,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:27:55,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:27:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,356 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:55,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:55,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:55,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:55,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-21 13:27:55,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:55,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1039287160, now seen corresponding path program 1 times [2022-10-21 13:27:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:55,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371921618] [2022-10-21 13:27:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:55,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-21 13:27:55,493 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:55,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371921618] [2022-10-21 13:27:55,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371921618] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:55,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:55,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:27:55,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655607802] [2022-10-21 13:27:55,494 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:55,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:27:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:27:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:27:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,495 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:55,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:55,496 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:55,496 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:55,496 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:55,496 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:28:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:28:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:28:08,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:28:08,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-21 13:28:08,789 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-21 13:28:08,790 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 13:28:08,799 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:28:08,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:28:08,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:28:08,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:28:08,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2022-10-21 13:28:08,849 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:28:08,850 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:28:08,850 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:28:08,850 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:28:08,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:28:08,850 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:28:08,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:28:08,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:28:08,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:28:08,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1239941073, now seen corresponding path program 1 times [2022-10-21 13:28:08,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:28:08,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183354354] [2022-10-21 13:28:08,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:28:08,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:28:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:28:08,929 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:28:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:28:08,955 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:28:08,956 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:28:08,956 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:28:08,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-21 13:28:08,957 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:28:08,957 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 13:28:08,957 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:28:08,957 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-21 13:28:08,980 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-10-21 13:28:08,982 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:28:08,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:28:08,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:28:09,000 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:28:09,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2022-10-21 13:28:09,026 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:28:09,028 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:28:09,028 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:28:09,028 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:28:09,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:28:09,028 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:28:09,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:28:09,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:28:09,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:28:09,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2025263563, now seen corresponding path program 1 times [2022-10-21 13:28:09,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:28:09,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620786177] [2022-10-21 13:28:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:28:09,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:28:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:28:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:28:09,211 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:28:09,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620786177] [2022-10-21 13:28:09,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620786177] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:28:09,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:28:09,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 13:28:09,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401521367] [2022-10-21 13:28:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:28:09,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 13:28:09,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:28:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 13:28:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 13:28:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:09,213 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:28:09,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:28:09,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:28:09,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-21 13:28:09,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:28:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:28:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash 36916892, now seen corresponding path program 1 times [2022-10-21 13:28:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:28:09,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515829099] [2022-10-21 13:28:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:28:09,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:28:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:28:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:28:09,766 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:28:09,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515829099] [2022-10-21 13:28:09,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515829099] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:28:09,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:28:09,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 13:28:09,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500542422] [2022-10-21 13:28:09,767 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:28:09,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 13:28:09,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:28:09,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 13:28:09,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 13:28:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:09,768 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:28:09,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:28:09,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:28:09,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:28:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:28:10,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-21 13:28:10,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:28:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:28:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash -380237372, now seen corresponding path program 1 times [2022-10-21 13:28:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:28:10,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996012679] [2022-10-21 13:28:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:28:10,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:28:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:28:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:28:10,584 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:28:10,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996012679] [2022-10-21 13:28:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996012679] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:28:10,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:28:10,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-21 13:28:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246863646] [2022-10-21 13:28:10,585 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:28:10,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-21 13:28:10,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:28:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-21 13:28:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-21 13:28:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:10,586 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:28:10,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:28:10,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:28:10,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:28:10,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:28:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:28:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:28:11,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-21 13:28:11,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:28:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:28:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1836953235, now seen corresponding path program 1 times [2022-10-21 13:28:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:28:11,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380517799] [2022-10-21 13:28:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:28:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:28:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:28:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:28:11,569 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:28:11,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380517799] [2022-10-21 13:28:11,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380517799] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:28:11,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:28:11,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-10-21 13:28:11,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984286733] [2022-10-21 13:28:11,569 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:28:11,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-21 13:28:11,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:28:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-21 13:28:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-10-21 13:28:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:11,570 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:28:11,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.526315789473684) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:28:11,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:28:11,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:28:11,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:28:11,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:28:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:28:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:28:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-21 13:28:25,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-10-21 13:28:25,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:28:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:28:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1110939817, now seen corresponding path program 1 times [2022-10-21 13:28:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:28:25,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027763172] [2022-10-21 13:28:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:28:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:28:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:28:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:28:25,921 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:28:25,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027763172] [2022-10-21 13:28:25,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027763172] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:28:25,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:28:25,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-10-21 13:28:25,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820498341] [2022-10-21 13:28:25,922 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:28:25,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-21 13:28:25,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:28:25,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-21 13:28:25,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-10-21 13:28:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:25,923 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:28:25,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.761904761904762) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:28:25,923 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:28:25,923 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:28:25,923 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:28:25,923 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-10-21 13:28:25,923 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:35,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:29:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:29:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-21 13:29:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-21 13:29:35,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:29:35,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-10-21 13:29:35,657 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-21 13:29:35,657 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:29:35,659 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:29:35,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:29:35,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:29:35,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:29:35,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2022-10-21 13:29:35,668 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:29:35,669 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:29:35,669 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:29:35,669 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:29:35,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:29:35,670 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:29:35,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:29:35,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:29:35,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:29:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1230361751, now seen corresponding path program 1 times [2022-10-21 13:29:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:29:35,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993965206] [2022-10-21 13:29:35,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:29:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:29:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:29:35,748 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:29:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:29:35,768 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:29:35,768 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:29:35,769 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:29:35,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-10-21 13:29:35,769 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:29:35,769 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-10-21 13:29:35,770 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:29:35,770 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-10-21 13:29:35,786 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-10-21 13:29:35,789 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:29:35,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:29:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:29:35,804 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:29:35,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2022-10-21 13:29:35,808 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:29:35,809 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:29:35,809 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:29:35,809 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:29:35,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:29:35,809 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e492b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:29:35,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:29:35,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:29:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:29:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash -297707563, now seen corresponding path program 1 times [2022-10-21 13:29:35,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:29:35,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363307611] [2022-10-21 13:29:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:29:35,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:29:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:29:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:29:35,984 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:29:35,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363307611] [2022-10-21 13:29:35,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363307611] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:29:35,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:29:35,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-21 13:29:35,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287248828] [2022-10-21 13:29:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:29:35,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-21 13:29:35,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:29:35,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-21 13:29:35,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-21 13:29:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:35,985 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:29:35,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:29:35,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:36,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-10-21 13:29:36,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:29:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:29:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash 639890224, now seen corresponding path program 1 times [2022-10-21 13:29:36,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:29:36,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960846379] [2022-10-21 13:29:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:29:36,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:29:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:29:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:29:36,397 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:29:36,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960846379] [2022-10-21 13:29:36,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960846379] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:29:36,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:29:36,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-21 13:29:36,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253137063] [2022-10-21 13:29:36,398 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:29:36,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-21 13:29:36,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:29:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-21 13:29:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-10-21 13:29:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:36,399 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:29:36,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:29:36,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:36,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:36,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:29:36,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-10-21 13:29:36,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:29:36,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:29:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash 482972748, now seen corresponding path program 1 times [2022-10-21 13:29:36,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:29:36,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878547488] [2022-10-21 13:29:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:29:36,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:29:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:29:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:29:36,984 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:29:36,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878547488] [2022-10-21 13:29:36,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878547488] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:29:36,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:29:36,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-21 13:29:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578105112] [2022-10-21 13:29:36,985 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:29:36,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-21 13:29:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:29:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-21 13:29:36,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-21 13:29:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:36,986 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:29:36,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.235294117647059) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:29:36,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:36,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:29:36,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:29:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:29:37,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-10-21 13:29:37,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:29:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:29:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 684633321, now seen corresponding path program 1 times [2022-10-21 13:29:37,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:29:37,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675803203] [2022-10-21 13:29:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:29:37,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:29:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:29:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:29:37,805 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:29:37,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675803203] [2022-10-21 13:29:37,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675803203] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:29:37,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:29:37,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-10-21 13:29:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218566314] [2022-10-21 13:29:37,805 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:29:37,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-21 13:29:37,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:29:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-21 13:29:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-10-21 13:29:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:37,806 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:29:37,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.526315789473684) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:29:37,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:37,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:29:37,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:29:37,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:29:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:29:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-21 13:29:38,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-10-21 13:29:38,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:29:38,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:29:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash 650034887, now seen corresponding path program 1 times [2022-10-21 13:29:38,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:29:38,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932163349] [2022-10-21 13:29:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:29:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:29:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:29:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:29:38,864 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:29:38,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932163349] [2022-10-21 13:29:38,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932163349] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:29:38,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:29:38,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-10-21 13:29:38,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593479205] [2022-10-21 13:29:38,865 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:29:38,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-21 13:29:38,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:29:38,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-21 13:29:38,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-10-21 13:29:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:29:38,866 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:29:38,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.761904761904762) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:29:38,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-10-21 13:29:38,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2022-10-21 13:29:38,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-10-21 13:29:38,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-10-21 13:29:38,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.