/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-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 21:36:52,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 21:36:52,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 21:36:53,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 21:36:53,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 21:36:53,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 21:36:53,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 21:36:53,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 21:36:53,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 21:36:53,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 21:36:53,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 21:36:53,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 21:36:53,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 21:36:53,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 21:36:53,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 21:36:53,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 21:36:53,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 21:36:53,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 21:36:53,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 21:36:53,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 21:36:53,077 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-Random42.epf [2021-07-14 21:36:53,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 21:36:53,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 21:36:53,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 21:36:53,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 21:36:53,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 21:36:53,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 21:36:53,111 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 21:36:53,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 21:36:53,111 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 21:36:53,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 21:36:53,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 21:36:53,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 21:36:53,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 21:36:53,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 21:36:53,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 21:36:53,112 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 21:36:53,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 21:36:53,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 21:36:53,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 21:36:53,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 21:36:53,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 21:36:53,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 21:36:53,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 21:36:53,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 21:36:53,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 21:36:53,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 21:36:53,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-14 21:36:53,115 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 21:36:53,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 21:36:53,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 21:36:53,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 21:36:53,359 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 21:36:53,360 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 21:36:53,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl [2021-07-14 21:36:53,361 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl' [2021-07-14 21:36:53,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 21:36:53,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 21:36:53,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 21:36:53,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 21:36:53,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 21:36:53,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 21:36:53,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 21:36:53,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 21:36:53,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 21:36:53,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/1) ... [2021-07-14 21:36:53,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 21:36:53,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 21:36:53,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 21:36:53,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 21:36:53,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (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 [2021-07-14 21:36:53,472 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 21:36:53,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 21:36:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 21:36:53,472 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 21:36:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 21:36:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 21:36:53,474 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 21:36:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 21:36:53,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 21:36:53,474 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 21:36:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 21:36:53,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 21:36:53,475 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 21:36:53,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 21:36:53,670 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 21:36:53,672 INFO L202 PluginConnector]: Adding new model max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:36:53 BoogieIcfgContainer [2021-07-14 21:36:53,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 21:36:53,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 21:36:53,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 21:36:53,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 21:36:53,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:36:53" (1/2) ... [2021-07-14 21:36:53,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f14bab and model type max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 09:36:53, skipping insertion in model container [2021-07-14 21:36:53,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:36:53" (2/2) ... [2021-07-14 21:36:53,677 INFO L111 eAbstractionObserver]: Analyzing ICFG max-array.wvr.bpl [2021-07-14 21:36:53,681 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 21:36:53,681 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 21:36:53,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 21:36:53,681 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 21:36:53,743 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 21:36:53,759 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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 [2021-07-14 21:36:53,793 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 21:36:53,793 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 21:36:53,793 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 21:36:53,793 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 21:36:53,793 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 21:36:53,793 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 21:36:53,793 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 21:36:53,793 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 21:36:53,856 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:36:53,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:36:53,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1342021843, now seen corresponding path program 1 times [2021-07-14 21:36:53,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:36:53,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086339189] [2021-07-14 21:36:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:36:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:36:53,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:36:53,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086339189] [2021-07-14 21:36:53,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086339189] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 21:36:53,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 21:36:53,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 21:36:53,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984290456] [2021-07-14 21:36:53,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 21:36:53,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:36:53,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 21:36:53,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 21:36:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:53,980 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:36:53,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-07-14 21:36:53,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:53,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:53,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 21:36:53,993 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:36:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:36:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1262256245, now seen corresponding path program 1 times [2021-07-14 21:36:53,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:36:53,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261271313] [2021-07-14 21:36:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:36:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:36:54,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:36:54,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261271313] [2021-07-14 21:36:54,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261271313] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 21:36:54,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 21:36:54,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 21:36:54,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332927277] [2021-07-14 21:36:54,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 21:36:54,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:36:54,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 21:36:54,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 21:36:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:54,039 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:36:54,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-07-14 21:36:54,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:54,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:36:54,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 21:36:54,140 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:36:54,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:36:54,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1859250549, now seen corresponding path program 1 times [2021-07-14 21:36:54,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:36:54,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143439338] [2021-07-14 21:36:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:36:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:36:54,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:36:54,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143439338] [2021-07-14 21:36:54,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143439338] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:36:54,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751870264] [2021-07-14 21:36:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-14 21:36:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:54,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-14 21:36:54,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:36:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:36:54,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751870264] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 21:36:54,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-14 21:36:54,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-07-14 21:36:54,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649153587] [2021-07-14 21:36:54,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 21:36:54,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:36:54,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 21:36:54,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-14 21:36:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:54,306 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:36:54,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-07-14 21:36:54,306 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:54,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:36:54,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:36:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:36:54,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:36:54,557 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:36:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:36:54,558 INFO L82 PathProgramCache]: Analyzing trace with hash -102836375, now seen corresponding path program 1 times [2021-07-14 21:36:54,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:36:54,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487837433] [2021-07-14 21:36:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:36:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:36:54,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:36:54,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487837433] [2021-07-14 21:36:54,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487837433] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:36:54,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322527712] [2021-07-14 21:36:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-14 21:36:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:54,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-14 21:36:54,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:36:55,268 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:36:55,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-07-14 21:36:55,270 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:36:55,278 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-07-14 21:36:55,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-07-14 21:36:55,285 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 21:36:55,333 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:36:55,342 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-07-14 21:36:55,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-07-14 21:36:55,345 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:36:55,352 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:36:55,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-07-14 21:36:55,359 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 21:36:55,407 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:36:55,417 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-07-14 21:36:55,417 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:71 [2021-07-14 21:36:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:36:55,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322527712] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:36:55,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:36:55,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 21:36:55,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048547242] [2021-07-14 21:36:55,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 21:36:55,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:36:55,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 21:36:55,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-07-14 21:36:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:55,537 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:36:55,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:36:55,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:55,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:36:55,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:36:55,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:36:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:36:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:36:56,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:36:56,040 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:36:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:36:56,040 INFO L82 PathProgramCache]: Analyzing trace with hash -110962489, now seen corresponding path program 2 times [2021-07-14 21:36:56,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:36:56,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713795] [2021-07-14 21:36:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:36:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:36:56,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:36:56,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713795] [2021-07-14 21:36:56,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713795] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:36:56,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614090736] [2021-07-14 21:36:56,101 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 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 [2021-07-14 21:36:56,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:36:56,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:36:56,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 21:36:56,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:36:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:36:56,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614090736] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:36:56,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:36:56,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-07-14 21:36:56,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703357610] [2021-07-14 21:36:56,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 21:36:56,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:36:56,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 21:36:56,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-07-14 21:36:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:56,225 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:36:56,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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) [2021-07-14 21:36:56,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:56,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:36:56,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:36:56,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:36:56,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:36:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:36:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:36:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:36:56,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:36:56,621 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:36:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:36:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1992024937, now seen corresponding path program 1 times [2021-07-14 21:36:56,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:36:56,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628562932] [2021-07-14 21:36:56,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:36:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:36:57,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:36:57,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628562932] [2021-07-14 21:36:57,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628562932] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:36:57,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839488471] [2021-07-14 21:36:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-07-14 21:36:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:36:57,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-14 21:36:57,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:36:57,766 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-07-14 21:36:58,000 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2021-07-14 21:36:58,102 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_13], 2=[A, v_prenex_14]} [2021-07-14 21:36:58,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:36:58,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-07-14 21:36:58,114 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:36:58,211 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-07-14 21:36:58,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:36:58,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:36:58,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:36:58,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-07-14 21:36:58,220 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 21:36:58,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:36:58,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-07-14 21:36:58,225 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:36:58,280 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.5 percent of original size [2021-07-14 21:36:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:36:58,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:36:58,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-07-14 21:36:58,286 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 21:36:58,310 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:36:58,313 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-07-14 21:36:58,313 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:25 [2021-07-14 21:36:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:36:58,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839488471] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:36:58,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:36:58,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-07-14 21:36:58,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887759967] [2021-07-14 21:36:58,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 21:36:58,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:36:58,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 21:36:58,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-07-14 21:36:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:58,356 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:36:58,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:36:58,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:36:58,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:36:58,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:36:58,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:36:58,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:36:58,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:36:59,395 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-07-14 21:36:59,549 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-07-14 21:36:59,785 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-07-14 21:36:59,959 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-07-14 21:37:00,174 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-14 21:37:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:37:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:00,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-07-14 21:37:00,503 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:37:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:37:00,503 INFO L82 PathProgramCache]: Analyzing trace with hash 662963655, now seen corresponding path program 2 times [2021-07-14 21:37:00,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:37:00,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996351895] [2021-07-14 21:37:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:37:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:37:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:00,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:37:00,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996351895] [2021-07-14 21:37:00,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996351895] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:00,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873925209] [2021-07-14 21:37:00,567 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:37:00,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:37:00,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:37:00,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 21:37:00,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:37:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:00,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873925209] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:00,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:37:00,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-14 21:37:00,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990810600] [2021-07-14 21:37:00,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-14 21:37:00,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:37:00,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-14 21:37:00,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-14 21:37:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:00,704 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:37:00,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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) [2021-07-14 21:37:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:37:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:00,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 21:37:01,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:37:01,193 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:37:01,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:37:01,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1589260183, now seen corresponding path program 3 times [2021-07-14 21:37:01,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:37:01,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823496838] [2021-07-14 21:37:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:37:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:37:01,773 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2021-07-14 21:37:01,957 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-07-14 21:37:02,088 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2021-07-14 21:37:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:02,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:37:02,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823496838] [2021-07-14 21:37:02,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823496838] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:02,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72169433] [2021-07-14 21:37:02,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:37:02,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-14 21:37:02,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:37:02,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-07-14 21:37:02,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:37:02,765 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-07-14 21:37:02,991 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-07-14 21:37:03,643 WARN L205 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-07-14 21:37:04,272 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 108 [2021-07-14 21:37:04,867 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 50 [2021-07-14 21:37:04,933 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_48], 5=[A, v_prenex_47]} [2021-07-14 21:37:04,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-07-14 21:37:04,938 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:04,970 INFO L628 ElimStorePlain]: treesize reduction 180, result has 7.7 percent of original size [2021-07-14 21:37:04,970 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-07-14 21:37:04,971 INFO L518 ElimStorePlain]: Eliminatee v_prenex_47 vanished before elimination [2021-07-14 21:37:04,971 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-14 21:37:04,971 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:209, output treesize:15 [2021-07-14 21:37:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:05,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72169433] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:05,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:37:05,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2021-07-14 21:37:05,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779694981] [2021-07-14 21:37:05,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-14 21:37:05,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:37:05,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-14 21:37:05,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-07-14 21:37:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:05,031 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:37:05,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 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) [2021-07-14 21:37:05,031 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:05,031 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:05,031 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:05,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:05,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:05,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:05,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 21:37:05,032 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:05,574 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2021-07-14 21:37:05,800 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2021-07-14 21:37:05,978 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2021-07-14 21:37:06,197 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-14 21:37:06,540 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 83 [2021-07-14 21:37:06,889 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 118 [2021-07-14 21:37:07,236 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 95 [2021-07-14 21:37:07,616 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 93 [2021-07-14 21:37:08,566 WARN L205 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 162 [2021-07-14 21:37:08,956 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 125 [2021-07-14 21:37:09,740 WARN L205 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 148 [2021-07-14 21:37:11,390 WARN L205 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 230 DAG size of output: 190 [2021-07-14 21:37:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 21:37:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:37:11,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-07-14 21:37:11,734 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:37:11,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:37:11,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1839623225, now seen corresponding path program 4 times [2021-07-14 21:37:11,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:37:11,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566698987] [2021-07-14 21:37:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:37:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:37:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:11,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:37:11,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566698987] [2021-07-14 21:37:11,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566698987] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:11,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807971820] [2021-07-14 21:37:11,806 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:37:11,833 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 21:37:11,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:37:11,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 21:37:11,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:37:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:11,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807971820] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:11,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:37:11,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-07-14 21:37:11,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900956074] [2021-07-14 21:37:11,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 21:37:11,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:37:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 21:37:11,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-07-14 21:37:11,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:11,951 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:37:11,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:37:11,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:37:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:37:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 21:37:12,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-07-14 21:37:12,453 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:37:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:37:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1393566103, now seen corresponding path program 5 times [2021-07-14 21:37:12,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:37:12,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136187209] [2021-07-14 21:37:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:37:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:37:12,846 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-07-14 21:37:13,332 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 57 [2021-07-14 21:37:13,863 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 85 [2021-07-14 21:37:14,363 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 84 [2021-07-14 21:37:14,636 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 53 [2021-07-14 21:37:14,899 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 47 [2021-07-14 21:37:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:15,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:37:15,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136187209] [2021-07-14 21:37:15,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136187209] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:15,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854734193] [2021-07-14 21:37:15,085 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:37:15,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-14 21:37:15,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:37:15,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 39 conjunts are in the unsatisfiable core [2021-07-14 21:37:15,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:37:15,676 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-07-14 21:37:16,223 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-07-14 21:37:17,824 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 263 [2021-07-14 21:37:19,678 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 502 [2021-07-14 21:37:25,002 WARN L205 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 606 DAG size of output: 574 [2021-07-14 21:37:31,326 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 748 DAG size of output: 692 [2021-07-14 21:37:33,982 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 737 DAG size of output: 285 [2021-07-14 21:37:34,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:37:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:34,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:34,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:34,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-07-14 21:37:34,163 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:34,835 WARN L205 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 274 [2021-07-14 21:37:34,836 INFO L628 ElimStorePlain]: treesize reduction 208, result has 76.5 percent of original size [2021-07-14 21:37:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:34,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:34,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:34,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:37:34,854 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:35,170 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-07-14 21:37:35,170 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:35,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-07-14 21:37:35,186 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:35,489 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2021-07-14 21:37:35,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:35,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-07-14 21:37:35,509 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:35,819 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2021-07-14 21:37:35,819 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:35,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:35,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-07-14 21:37:35,846 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:36,116 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2021-07-14 21:37:36,117 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:36,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:37:36,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:37:36,133 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:36,378 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2021-07-14 21:37:36,379 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:36,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-07-14 21:37:36,393 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:36,618 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-07-14 21:37:36,619 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:36,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:37:36,632 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:36,847 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-07-14 21:37:36,848 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:36,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:36,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-07-14 21:37:36,861 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:37,057 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-07-14 21:37:37,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:37:37,070 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:37,252 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2021-07-14 21:37:37,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:37,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-07-14 21:37:37,267 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:37,441 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-07-14 21:37:37,442 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:37,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:37:37,456 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:37,625 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-07-14 21:37:37,625 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:37,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:37:37,640 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:37,780 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-07-14 21:37:37,780 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:37,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:37:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:37:37,791 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:37,919 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-07-14 21:37:37,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:37,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:37:37,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-07-14 21:37:37,930 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-14 21:37:38,047 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-07-14 21:37:38,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:37:38,057 INFO L550 ElimStorePlain]: Start of recursive call 1: 30 dim-0 vars, 15 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-07-14 21:37:38,057 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 45 variables, input treesize:923, output treesize:50 [2021-07-14 21:37:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:38,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854734193] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:38,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:37:38,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2021-07-14 21:37:38,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572192016] [2021-07-14 21:37:38,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-07-14 21:37:38,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:37:38,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-07-14 21:37:38,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2021-07-14 21:37:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:38,141 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:37:38,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 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) [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 21:37:38,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:38,829 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-07-14 21:37:39,291 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35 [2021-07-14 21:37:39,623 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-07-14 21:37:40,059 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2021-07-14 21:37:40,561 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 78 [2021-07-14 21:37:41,531 WARN L205 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 157 [2021-07-14 21:37:43,452 WARN L205 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 567 DAG size of output: 192 [2021-07-14 21:37:44,330 WARN L205 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 144 [2021-07-14 21:37:46,865 WARN L205 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 305 DAG size of output: 286 [2021-07-14 21:37:47,919 WARN L205 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 161 [2021-07-14 21:37:54,906 WARN L205 SmtUtils]: Spent 6.70 s on a formula simplification. DAG size of input: 729 DAG size of output: 520 [2021-07-14 21:37:57,615 WARN L205 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 319 DAG size of output: 289 [2021-07-14 21:37:58,218 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-07-14 21:37:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 21:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:37:58,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:37:58,503 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:37:58,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:37:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1651064121, now seen corresponding path program 6 times [2021-07-14 21:37:58,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:37:58,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830494214] [2021-07-14 21:37:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:37:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:37:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:58,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:37:58,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830494214] [2021-07-14 21:37:58,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830494214] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:58,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36842006] [2021-07-14 21:37:58,577 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:37:58,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 21:37:58,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:37:58,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 21:37:58,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:37:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:37:58,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36842006] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:37:58,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:37:58,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2021-07-14 21:37:58,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393108595] [2021-07-14 21:37:58,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-14 21:37:58,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:37:58,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-14 21:37:58,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-07-14 21:37:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:58,759 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:37:58,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 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) [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:37:58,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:37:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:37:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:37:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:37:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:37:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:37:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:37:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:37:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:37:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:37:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:37:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 21:37:59,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2021-07-14 21:37:59,331 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:37:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:37:59,332 INFO L82 PathProgramCache]: Analyzing trace with hash -576893591, now seen corresponding path program 7 times [2021-07-14 21:37:59,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:37:59,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101102895] [2021-07-14 21:37:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:37:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:00,156 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 41 [2021-07-14 21:38:00,546 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 60 [2021-07-14 21:38:01,014 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 71 [2021-07-14 21:38:01,426 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 194 [2021-07-14 21:38:02,104 WARN L205 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 128 [2021-07-14 21:38:02,496 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 193 [2021-07-14 21:38:03,180 WARN L205 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 127 [2021-07-14 21:38:03,348 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 175 [2021-07-14 21:38:03,725 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 68 [2021-07-14 21:38:03,865 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 170 [2021-07-14 21:38:04,225 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 63 [2021-07-14 21:38:04,405 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2021-07-14 21:38:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:04,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:04,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101102895] [2021-07-14 21:38:04,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101102895] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:04,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388783885] [2021-07-14 21:38:04,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:04,626 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-14 21:38:04,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:05,094 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-07-14 21:38:05,587 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-07-14 21:38:06,721 WARN L205 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-07-14 21:38:07,857 WARN L205 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2021-07-14 21:38:11,396 WARN L205 SmtUtils]: Spent 2.85 s on a formula simplification that was a NOOP. DAG size: 417 [2021-07-14 21:38:16,440 WARN L205 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 875 DAG size of output: 363 [2021-07-14 21:38:20,090 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 677 DAG size of output: 217 [2021-07-14 21:38:22,106 WARN L205 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 393 DAG size of output: 200 [2021-07-14 21:38:23,618 WARN L205 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 133 [2021-07-14 21:38:23,812 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_394, v_prenex_399], 9=[A, v_prenex_395, v_prenex_396, v_prenex_397, v_prenex_398, v_prenex_400]} [2021-07-14 21:38:23,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:38:23,825 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:23,972 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 10 [2021-07-14 21:38:23,973 INFO L628 ElimStorePlain]: treesize reduction 753, result has 2.0 percent of original size [2021-07-14 21:38:23,973 INFO L518 ElimStorePlain]: Eliminatee v_prenex_399 vanished before elimination [2021-07-14 21:38:23,973 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-07-14 21:38:23,973 INFO L518 ElimStorePlain]: Eliminatee v_prenex_395 vanished before elimination [2021-07-14 21:38:23,996 INFO L518 ElimStorePlain]: Eliminatee v_prenex_396 vanished before elimination [2021-07-14 21:38:23,997 INFO L518 ElimStorePlain]: Eliminatee v_prenex_397 vanished before elimination [2021-07-14 21:38:23,997 INFO L518 ElimStorePlain]: Eliminatee v_prenex_398 vanished before elimination [2021-07-14 21:38:23,997 INFO L518 ElimStorePlain]: Eliminatee v_prenex_400 vanished before elimination [2021-07-14 21:38:23,997 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 8 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-14 21:38:23,997 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 20 variables, input treesize:798, output treesize:15 [2021-07-14 21:38:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:24,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388783885] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:24,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:38:24,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 33 [2021-07-14 21:38:24,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071370088] [2021-07-14 21:38:24,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-07-14 21:38:24,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-07-14 21:38:24,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2021-07-14 21:38:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:24,091 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:24,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 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) [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 21:38:24,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:25,480 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2021-07-14 21:38:25,869 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2021-07-14 21:38:26,344 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 62 [2021-07-14 21:38:26,778 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2021-07-14 21:38:27,552 WARN L205 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 90 [2021-07-14 21:38:28,373 WARN L205 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 100 [2021-07-14 21:38:29,155 WARN L205 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 97 [2021-07-14 21:38:31,154 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 310 DAG size of output: 220 [2021-07-14 21:38:33,168 WARN L205 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 446 DAG size of output: 357 [2021-07-14 21:38:35,333 WARN L205 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 333 DAG size of output: 233 [2021-07-14 21:38:37,443 WARN L205 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 328 DAG size of output: 227 [2021-07-14 21:38:43,658 WARN L205 SmtUtils]: Spent 5.85 s on a formula simplification. DAG size of input: 460 DAG size of output: 425 [2021-07-14 21:38:45,859 WARN L205 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 464 DAG size of output: 361 [2021-07-14 21:38:52,226 WARN L205 SmtUtils]: Spent 5.98 s on a formula simplification. DAG size of input: 733 DAG size of output: 353 [2021-07-14 21:38:58,716 WARN L205 SmtUtils]: Spent 6.23 s on a formula simplification. DAG size of input: 531 DAG size of output: 428 [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:38:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 21:38:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:38:59,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2021-07-14 21:38:59,236 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:59,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:59,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1654730041, now seen corresponding path program 8 times [2021-07-14 21:38:59,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:59,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660171772] [2021-07-14 21:38:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:59,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:59,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660171772] [2021-07-14 21:38:59,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660171772] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:59,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690515794] [2021-07-14 21:38:59,327 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:59,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:38:59,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:38:59,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-14 21:38:59,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:59,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690515794] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:59,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:38:59,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2021-07-14 21:38:59,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743541364] [2021-07-14 21:38:59,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-14 21:38:59,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:59,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-14 21:38:59,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-07-14 21:38:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:59,526 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:59,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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) [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:38:59,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:38:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:39:00,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:39:00,154 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:39:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:39:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash 195124585, now seen corresponding path program 9 times [2021-07-14 21:39:00,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:39:00,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92864314] [2021-07-14 21:39:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:39:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:39:01,379 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 111 [2021-07-14 21:39:01,540 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 32 [2021-07-14 21:39:01,699 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 106 [2021-07-14 21:39:01,824 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 27 [2021-07-14 21:39:03,796 WARN L205 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 176 DAG size of output: 138 [2021-07-14 21:39:04,106 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 36 [2021-07-14 21:39:18,659 WARN L205 SmtUtils]: Spent 14.55 s on a formula simplification. DAG size of input: 238 DAG size of output: 257 [2021-07-14 21:39:19,320 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 60 [2021-07-14 21:40:26,677 WARN L205 SmtUtils]: Spent 1.12 m on a formula simplification. DAG size of input: 290 DAG size of output: 586 [2021-07-14 21:40:27,060 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 586 [2021-07-14 21:40:28,893 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 564 DAG size of output: 62 [2021-07-14 21:41:47,555 WARN L205 SmtUtils]: Spent 1.31 m on a formula simplification. DAG size of input: 333 DAG size of output: 774 [2021-07-14 21:41:47,923 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 774 [2021-07-14 21:41:51,220 WARN L205 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 774 DAG size of output: 114 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown