/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-17 10:12:59,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-17 10:12:59,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-17 10:12:59,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-17 10:12:59,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-17 10:12:59,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-17 10:12:59,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-17 10:12:59,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-17 10:12:59,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-17 10:12:59,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-17 10:12:59,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-17 10:12:59,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-17 10:12:59,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-17 10:12:59,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-17 10:12:59,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-17 10:12:59,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-17 10:12:59,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-17 10:12:59,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-17 10:12:59,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-17 10:12:59,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-17 10:12:59,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-17 10:12:59,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-17 10:12:59,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-17 10:12:59,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-17 10:12:59,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-17 10:12:59,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-17 10:12:59,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-17 10:12:59,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-17 10:12:59,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-17 10:12:59,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-17 10:12:59,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-17 10:12:59,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-17 10:12:59,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-17 10:12:59,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-17 10:12:59,561 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-17 10:12:59,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-17 10:12:59,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-17 10:12:59,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-17 10:12:59,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-17 10:12:59,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-17 10:12:59,563 INFO L138 SettingsManager]: * Use SBE=true [2021-06-17 10:12:59,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-17 10:12:59,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-17 10:12:59,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-17 10:12:59,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-17 10:12:59,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-17 10:12:59,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-17 10:12:59,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-17 10:12:59,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-17 10:12:59,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-17 10:12:59,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-17 10:12:59,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-17 10:12:59,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-17 10:12:59,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-17 10:12:59,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-17 10:12:59,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-17 10:12:59,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-17 10:12:59,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 10:12:59,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-17 10:12:59,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-17 10:12:59,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-17 10:12:59,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-17 10:12:59,579 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-17 10:12:59,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-17 10:12:59,580 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-17 10:12:59,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-17 10:12:59,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-17 10:12:59,580 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-17 10:12:59,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-17 10:12:59,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-17 10:12:59,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-17 10:12:59,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-17 10:12:59,848 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-17 10:12:59,850 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-17 10:12:59,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl [2021-06-17 10:12:59,863 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl' [2021-06-17 10:12:59,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-17 10:12:59,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-17 10:12:59,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-17 10:12:59,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-17 10:12:59,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-17 10:12:59,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-17 10:12:59,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-17 10:12:59,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-17 10:12:59,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-17 10:12:59,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... [2021-06-17 10:12:59,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-17 10:12:59,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-17 10:12:59,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-17 10:12:59,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-17 10:12:59,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 10:12:59,967 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-17 10:12:59,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-17 10:12:59,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-17 10:12:59,968 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-17 10:12:59,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-17 10:12:59,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-17 10:12:59,968 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-17 10:12:59,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-17 10:12:59,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-17 10:12:59,968 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-17 10:12:59,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-17 10:12:59,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-17 10:12:59,968 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-17 10:12:59,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-17 10:12:59,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-17 10:12:59,969 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-17 10:13:00,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-17 10:13:00,116 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-17 10:13:00,118 INFO L202 PluginConnector]: Adding new model buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 10:13:00 BoogieIcfgContainer [2021-06-17 10:13:00,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-17 10:13:00,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-17 10:13:00,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-17 10:13:00,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-17 10:13:00,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:12:59" (1/2) ... [2021-06-17 10:13:00,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330c5513 and model type buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 10:13:00, skipping insertion in model container [2021-06-17 10:13:00,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 10:13:00" (2/2) ... [2021-06-17 10:13:00,123 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-mult-alt.wvr.bpl [2021-06-17 10:13:00,126 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-17 10:13:00,126 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-17 10:13:00,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-17 10:13:00,127 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-17 10:13:00,174 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-17 10:13:00,188 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 10:13:00,258 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 10:13:00,258 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 10:13:00,258 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 10:13:00,258 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 10:13:00,259 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 10:13:00,259 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 10:13:00,259 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 10:13:00,259 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-17 10:13:00,510 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:13:00,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:13:00,514 INFO L82 PathProgramCache]: Analyzing trace with hash -301807554, now seen corresponding path program 1 times [2021-06-17 10:13:00,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:13:00,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678410946] [2021-06-17 10:13:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:13:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:13:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-17 10:13:00,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:13:00,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678410946] [2021-06-17 10:13:00,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678410946] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 10:13:00,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 10:13:00,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 10:13:00,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342174387] [2021-06-17 10:13:00,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 10:13:00,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:13:00,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 10:13:00,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 10:13:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:00,694 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:13:00,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:13:00,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:00,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-17 10:13:00,822 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:13:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:13:00,825 INFO L82 PathProgramCache]: Analyzing trace with hash 693352308, now seen corresponding path program 2 times [2021-06-17 10:13:00,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:13:00,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359465890] [2021-06-17 10:13:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:13:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:13:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-17 10:13:01,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:13:01,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359465890] [2021-06-17 10:13:01,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359465890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:13:01,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303263357] [2021-06-17 10:13:01,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:13:01,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 10:13:01,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:13:01,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-17 10:13:01,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:13:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-06-17 10:13:01,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303263357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:13:01,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 10:13:01,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 3] total 17 [2021-06-17 10:13:01,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195208501] [2021-06-17 10:13:01,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-17 10:13:01,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:13:01,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-17 10:13:01,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-17 10:13:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:01,386 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:13:01,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:13:01,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:01,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 10:13:01,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:13:01,989 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:13:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:13:01,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1828813635, now seen corresponding path program 3 times [2021-06-17 10:13:01,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:13:01,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634155935] [2021-06-17 10:13:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:13:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:13:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-06-17 10:13:02,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:13:02,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634155935] [2021-06-17 10:13:02,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634155935] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 10:13:02,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 10:13:02,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 10:13:02,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788050618] [2021-06-17 10:13:02,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 10:13:02,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:13:02,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 10:13:02,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 10:13:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:02,032 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:13:02,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:13:02,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:02,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-17 10:13:02,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 10:13:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:02,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-17 10:13:02,132 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:13:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:13:02,132 INFO L82 PathProgramCache]: Analyzing trace with hash 974455032, now seen corresponding path program 4 times [2021-06-17 10:13:02,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:13:02,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235297297] [2021-06-17 10:13:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:13:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:13:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 61 proven. 78 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-06-17 10:13:02,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:13:02,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235297297] [2021-06-17 10:13:02,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235297297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:13:02,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139199733] [2021-06-17 10:13:02,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:13:02,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 10:13:02,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:13:02,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-17 10:13:02,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:13:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 105 proven. 97 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-06-17 10:13:02,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139199733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:13:02,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 10:13:02,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13] total 19 [2021-06-17 10:13:02,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567685630] [2021-06-17 10:13:02,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-17 10:13:02,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:13:02,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-17 10:13:02,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-17 10:13:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:02,653 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:13:02,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 5.55) internal successors, (111), 19 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:13:02,653 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:02,653 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-17 10:13:02,653 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:02,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-17 10:13:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-17 10:13:03,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:13:03,325 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:13:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:13:03,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1489852725, now seen corresponding path program 5 times [2021-06-17 10:13:03,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:13:03,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901788592] [2021-06-17 10:13:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:13:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:13:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 61 proven. 48 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-06-17 10:13:03,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:13:03,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901788592] [2021-06-17 10:13:03,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901788592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:13:03,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8151289] [2021-06-17 10:13:03,410 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:13:03,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-17 10:13:03,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:13:03,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-17 10:13:03,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:13:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 76 proven. 58 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-06-17 10:13:03,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8151289] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:13:03,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 10:13:03,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-06-17 10:13:03,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68704821] [2021-06-17 10:13:03,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-17 10:13:03,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:13:03,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-17 10:13:03,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-06-17 10:13:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:03,738 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:13:03,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.0625) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:13:03,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:03,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-17 10:13:03,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:03,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-17 10:13:03,738 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-17 10:13:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-17 10:13:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-17 10:13:04,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:13:04,488 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:13:04,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:13:04,489 INFO L82 PathProgramCache]: Analyzing trace with hash 543667785, now seen corresponding path program 6 times [2021-06-17 10:13:04,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:13:04,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773653682] [2021-06-17 10:13:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:13:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:13:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2021-06-17 10:13:04,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:13:04,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773653682] [2021-06-17 10:13:04,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773653682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 10:13:04,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 10:13:04,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-17 10:13:04,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157427782] [2021-06-17 10:13:04,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-17 10:13:04,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:13:04,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-17 10:13:04,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-17 10:13:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:04,544 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:13:04,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:13:04,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-17 10:13:04,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-17 10:13:04,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-17 10:13:04,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-17 10:13:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-17 10:13:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-17 10:13:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-17 10:13:04,704 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:13:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:13:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2081266243, now seen corresponding path program 7 times [2021-06-17 10:13:04,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:13:04,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251413060] [2021-06-17 10:13:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:13:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:13:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-06-17 10:13:04,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:13:04,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251413060] [2021-06-17 10:13:04,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251413060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 10:13:04,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-17 10:13:04,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-17 10:13:04,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138473881] [2021-06-17 10:13:04,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-17 10:13:04,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:13:04,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-17 10:13:04,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-17 10:13:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:04,764 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:13:04,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:13:04,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-17 10:13:04,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-17 10:13:04,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-17 10:13:04,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:04,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:13:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-17 10:13:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-17 10:13:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-17 10:13:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 10:13:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 10:13:05,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-17 10:13:05,023 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:13:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:13:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1534206115, now seen corresponding path program 8 times [2021-06-17 10:13:05,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:13:05,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232997201] [2021-06-17 10:13:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:13:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:13:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 5 proven. 300 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-17 10:13:06,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:13:06,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232997201] [2021-06-17 10:13:06,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232997201] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:13:06,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353043545] [2021-06-17 10:13:06,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:13:06,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 10:13:06,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:13:06,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 99 conjunts are in the unsatisfiable core [2021-06-17 10:13:06,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:13:08,840 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-06-17 10:13:08,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 133 treesize of output 81 [2021-06-17 10:13:08,844 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-17 10:13:08,864 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 10:13:08,865 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 10:13:08,865 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:188, output treesize:98 [2021-06-17 10:13:09,515 INFO L354 Elim1Store]: treesize reduction 416, result has 0.2 percent of original size [2021-06-17 10:13:09,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 699 treesize of output 325 [2021-06-17 10:13:10,459 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 1140 DAG size of output: 1140 [2021-06-17 10:13:15,559 WARN L205 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 4992 DAG size of output: 3807 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown