/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-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 22:40:15,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 22:40:15,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 22:40:15,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 22:40:15,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 22:40:15,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 22:40:15,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 22:40:15,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 22:40:15,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 22:40:15,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 22:40:15,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 22:40:15,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 22:40:15,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 22:40:15,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 22:40:15,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 22:40:15,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 22:40:15,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 22:40:15,469 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-Random521.epf [2021-07-14 22:40:15,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 22:40:15,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 22:40:15,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 22:40:15,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 22:40:15,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 22:40:15,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 22:40:15,494 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 22:40:15,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 22:40:15,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 22:40:15,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 22:40:15,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 22:40:15,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 22:40:15,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-14 22:40:15,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 22:40:15,497 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 22:40:15,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 22:40:15,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 22:40:15,497 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 22:40:15,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-14 22:40:15,497 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 22:40:15,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 22:40:15,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 22:40:15,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 22:40:15,761 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 22:40:15,763 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 22:40:15,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl [2021-07-14 22:40:15,764 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-subst.wvr.bpl' [2021-07-14 22:40:15,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 22:40:15,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 22:40:15,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 22:40:15,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 22:40:15,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 22:40:15,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 22:40:15,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 22:40:15,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 22:40:15,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 22:40:15,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/1) ... [2021-07-14 22:40:15,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 22:40:15,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 22:40:15,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 22:40:15,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 22:40:15,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (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 22:40:15,919 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 22:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 22:40:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 22:40:15,919 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 22:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 22:40:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 22:40:15,920 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 22:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 22:40:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 22:40:15,920 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 22:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 22:40:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 22:40:15,921 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 22:40:16,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 22:40:16,517 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-07-14 22:40:16,520 INFO L202 PluginConnector]: Adding new model nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 10:40:16 BoogieIcfgContainer [2021-07-14 22:40:16,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 22:40:16,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 22:40:16,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 22:40:16,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 22:40:16,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 10:40:15" (1/2) ... [2021-07-14 22:40:16,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f01966 and model type nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 10:40:16, skipping insertion in model container [2021-07-14 22:40:16,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nzb-file-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 10:40:16" (2/2) ... [2021-07-14 22:40:16,530 INFO L111 eAbstractionObserver]: Analyzing ICFG nzb-file-subst.wvr.bpl [2021-07-14 22:40:16,534 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 22:40:16,534 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 22:40:16,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 22:40:16,535 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 22:40:16,575 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 22:40:16,598 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 22:40:16,661 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 22:40:16,661 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 22:40:16,661 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 22:40:16,661 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 22:40:16,661 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 22:40:16,661 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 22:40:16,661 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 22:40:16,661 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 22:40:16,753 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:16,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:16,756 INFO L82 PathProgramCache]: Analyzing trace with hash 595577278, now seen corresponding path program 1 times [2021-07-14 22:40:16,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:16,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280431315] [2021-07-14 22:40:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:16,868 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 22:40:16,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:16,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280431315] [2021-07-14 22:40:16,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280431315] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 22:40:16,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 22:40:16,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 22:40:16,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844720276] [2021-07-14 22:40:16,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 22:40:16,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:16,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 22:40:16,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 22:40:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:16,886 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:16,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 22:40:16,887 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:16,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 22:40:16,901 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:16,903 INFO L82 PathProgramCache]: Analyzing trace with hash -532698158, now seen corresponding path program 1 times [2021-07-14 22:40:16,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:16,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48346647] [2021-07-14 22:40:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:16,957 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 22:40:16,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:16,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48346647] [2021-07-14 22:40:16,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48346647] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 22:40:16,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 22:40:16,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 22:40:16,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428769494] [2021-07-14 22:40:16,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 22:40:16,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:16,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 22:40:16,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 22:40:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:16,963 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:16,963 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 22:40:16,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:16,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:16,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 22:40:16,979 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:16,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:16,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1738999394, now seen corresponding path program 1 times [2021-07-14 22:40:16,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:16,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369663060] [2021-07-14 22:40:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 22:40:17,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:17,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369663060] [2021-07-14 22:40:17,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369663060] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:17,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201544292] [2021-07-14 22:40:17,076 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 22:40:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:17,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-07-14 22:40:17,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 22:40:17,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201544292] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 22:40:17,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-14 22:40:17,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-07-14 22:40:17,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468972448] [2021-07-14 22:40:17,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 22:40:17,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:17,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 22:40:17,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 22:40:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:17,213 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:17,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 22:40:17,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:17,214 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:17,214 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:17,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 22:40:17,439 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:17,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1371840586, now seen corresponding path program 1 times [2021-07-14 22:40:17,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:17,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993307604] [2021-07-14 22:40:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:17,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:17,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993307604] [2021-07-14 22:40:17,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993307604] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:17,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812609959] [2021-07-14 22:40:17,720 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 22:40:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:17,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 39 conjunts are in the unsatisfiable core [2021-07-14 22:40:17,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:18,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812609959] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:18,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:18,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-14 22:40:18,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435353331] [2021-07-14 22:40:18,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 22:40:18,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:18,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 22:40:18,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-07-14 22:40:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:18,521 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:18,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 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 22:40:18,521 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:18,521 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:18,521 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:18,521 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:18,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 22:40:18,849 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:18,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1332385206, now seen corresponding path program 2 times [2021-07-14 22:40:18,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:18,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995085396] [2021-07-14 22:40:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:19,036 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 22:40:19,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:19,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995085396] [2021-07-14 22:40:19,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995085396] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:19,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969884209] [2021-07-14 22:40:19,037 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 22:40:19,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 22:40:19,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 22:40:19,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 26 conjunts are in the unsatisfiable core [2021-07-14 22:40:19,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:19,250 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 22:40:19,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969884209] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:19,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:19,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-07-14 22:40:19,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525987328] [2021-07-14 22:40:19,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-14 22:40:19,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:19,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-14 22:40:19,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-07-14 22:40:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:19,254 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:19,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 22:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:19,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:19,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 22:40:19,659 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:19,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:19,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1566852150, now seen corresponding path program 3 times [2021-07-14 22:40:19,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:19,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454518466] [2021-07-14 22:40:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 22:40:19,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:19,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454518466] [2021-07-14 22:40:19,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454518466] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:19,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023249541] [2021-07-14 22:40:19,749 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 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 22:40:19,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-14 22:40:19,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 22:40:19,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 22:40:19,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 22:40:19,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023249541] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:19,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:19,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-07-14 22:40:19,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216048680] [2021-07-14 22:40:19,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 22:40:19,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:19,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 22:40:19,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-07-14 22:40:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:19,843 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:19,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 22:40:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:19,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:20,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-07-14 22:40:20,115 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:20,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1357030868, now seen corresponding path program 4 times [2021-07-14 22:40:20,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:20,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802766732] [2021-07-14 22:40:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-14 22:40:20,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:20,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802766732] [2021-07-14 22:40:20,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802766732] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:20,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979851809] [2021-07-14 22:40:20,212 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 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 22:40:20,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 22:40:20,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 22:40:20,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-14 22:40:20,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:20,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-07-14 22:40:20,449 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:20,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:20,455 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:20,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:20,461 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:20,514 INFO L628 ElimStorePlain]: treesize reduction 26, result has 69.0 percent of original size [2021-07-14 22:40:20,514 INFO L518 ElimStorePlain]: Eliminatee ends_with_6 vanished before elimination [2021-07-14 22:40:20,520 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2021-07-14 22:40:20,520 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:95, output treesize:53 [2021-07-14 22:40:20,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:20,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:20,741 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:20,742 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:20,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-07-14 22:40:20,744 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:20,750 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:20,751 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-14 22:40:20,752 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2021-07-14 22:40:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-14 22:40:20,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979851809] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:20,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:20,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-07-14 22:40:20,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077867409] [2021-07-14 22:40:20,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 22:40:20,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:20,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 22:40:20,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-07-14 22:40:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:20,794 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:20,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 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 22:40:20,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:20,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:20,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:20,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:20,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:20,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:20,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:21,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 22:40:21,169 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:21,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1987577152, now seen corresponding path program 5 times [2021-07-14 22:40:21,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:21,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142760076] [2021-07-14 22:40:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:21,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:21,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142760076] [2021-07-14 22:40:21,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142760076] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:21,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540852876] [2021-07-14 22:40:21,361 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 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 22:40:21,405 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-07-14 22:40:21,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 22:40:21,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 22 conjunts are in the unsatisfiable core [2021-07-14 22:40:21,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:21,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540852876] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:21,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:21,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2021-07-14 22:40:21,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053905584] [2021-07-14 22:40:21,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 22:40:21,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:21,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 22:40:21,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-07-14 22:40:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:21,500 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:21,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 22:40:21,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:21,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:21,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:21,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:21,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:21,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:21,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:21,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:21,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 22:40:21,841 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:21,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1514604042, now seen corresponding path program 6 times [2021-07-14 22:40:21,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:21,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54692334] [2021-07-14 22:40:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:22,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:22,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54692334] [2021-07-14 22:40:22,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54692334] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:22,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399389550] [2021-07-14 22:40:22,197 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 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 22:40:22,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-07-14 22:40:22,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 22:40:22,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 51 conjunts are in the unsatisfiable core [2021-07-14 22:40:22,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:22,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,851 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:22,852 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:22,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,856 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-07-14 22:40:22,857 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:22,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,867 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:22,868 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:22,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,874 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:22,874 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:22,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:22,878 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-07-14 22:40:22,879 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:23,062 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-07-14 22:40:23,063 INFO L628 ElimStorePlain]: treesize reduction 261, result has 38.6 percent of original size [2021-07-14 22:40:23,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:23,067 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:23,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:23,071 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:23,135 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:23,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-07-14 22:40:23,139 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:23,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-07-14 22:40:23,143 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:23,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:23,207 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-1 vars, End of recursive call: 2 dim-0 vars, and 6 xjuncts. [2021-07-14 22:40:23,207 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:528, output treesize:150 [2021-07-14 22:40:24,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:24,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:24,035 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-07-14 22:40:24,036 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:24,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:24,041 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-07-14 22:40:24,042 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:24,154 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-07-14 22:40:24,155 INFO L628 ElimStorePlain]: treesize reduction 69, result has 59.4 percent of original size [2021-07-14 22:40:24,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-07-14 22:40:24,161 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:24,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:24,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:24,208 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:24,251 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:24,252 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-07-14 22:40:24,252 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:210, output treesize:92 [2021-07-14 22:40:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:24,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399389550] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:24,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:24,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-14 22:40:24,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481238749] [2021-07-14 22:40:24,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-14 22:40:24,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:24,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-14 22:40:24,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2021-07-14 22:40:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:24,406 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:24,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 22:40:24,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:24,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:24,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:24,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:24,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:24,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:24,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:24,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:24,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:24,701 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-14 22:40:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 22:40:24,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-07-14 22:40:24,974 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1879194230, now seen corresponding path program 7 times [2021-07-14 22:40:24,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:24,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342160720] [2021-07-14 22:40:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:25,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:25,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342160720] [2021-07-14 22:40:25,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342160720] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:25,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697004460] [2021-07-14 22:40:25,165 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 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 22:40:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:25,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 38 conjunts are in the unsatisfiable core [2021-07-14 22:40:25,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:25,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:25,343 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:25,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:25,347 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:25,349 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-14 22:40:25,349 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:25,366 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:25,369 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2021-07-14 22:40:25,370 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:87, output treesize:48 [2021-07-14 22:40:25,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:25,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:25,585 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:25,585 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:25,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:25,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:25,588 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:25,589 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:25,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:25,591 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-07-14 22:40:25,591 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:25,597 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:25,620 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 22:40:25,620 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:77, output treesize:11 [2021-07-14 22:40:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:25,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697004460] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:25,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:25,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2021-07-14 22:40:25,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295641579] [2021-07-14 22:40:25,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-14 22:40:25,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:25,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-14 22:40:25,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-07-14 22:40:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:25,645 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:25,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 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 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 22:40:25,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 22:40:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 22:40:26,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-07-14 22:40:26,162 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:26,162 INFO L82 PathProgramCache]: Analyzing trace with hash -725944086, now seen corresponding path program 8 times [2021-07-14 22:40:26,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:26,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82716477] [2021-07-14 22:40:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:26,298 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 22:40:26,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:26,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82716477] [2021-07-14 22:40:26,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82716477] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:26,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260619445] [2021-07-14 22:40:26,299 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 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 22:40:26,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 22:40:26,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 22:40:26,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-14 22:40:26,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:26,439 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 22:40:26,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260619445] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:26,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:26,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-07-14 22:40:26,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880563677] [2021-07-14 22:40:26,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 22:40:26,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:26,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 22:40:26,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-07-14 22:40:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:26,440 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:26,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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 22:40:26,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:26,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:26,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:26,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:26,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:26,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:26,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:26,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:26,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 22:40:26,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 22:40:26,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 22:40:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 22:40:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 22:40:26,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 22:40:26,938 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:26,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1000175712, now seen corresponding path program 9 times [2021-07-14 22:40:26,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:26,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603275751] [2021-07-14 22:40:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:27,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:27,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603275751] [2021-07-14 22:40:27,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603275751] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:27,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492194759] [2021-07-14 22:40:27,364 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 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 22:40:27,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-14 22:40:27,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 22:40:27,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 57 conjunts are in the unsatisfiable core [2021-07-14 22:40:27,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:27,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,978 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-07-14 22:40:27,979 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:27,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,983 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2021-07-14 22:40:27,983 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:27,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,987 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:27,988 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:27,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,992 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:27,992 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:27,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:27,996 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2021-07-14 22:40:27,996 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:28,140 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-07-14 22:40:28,141 INFO L628 ElimStorePlain]: treesize reduction 214, result has 42.5 percent of original size [2021-07-14 22:40:28,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-07-14 22:40:28,145 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:28,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 2 [2021-07-14 22:40:28,148 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:28,205 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:28,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-07-14 22:40:28,209 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:28,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-07-14 22:40:28,213 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:28,265 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:28,268 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-1 vars, End of recursive call: 2 dim-0 vars, and 6 xjuncts. [2021-07-14 22:40:28,268 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 4 variables, input treesize:467, output treesize:140 [2021-07-14 22:40:29,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:29,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:29,341 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2021-07-14 22:40:29,342 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:29,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 22:40:29,345 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 2 [2021-07-14 22:40:29,346 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:29,488 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2021-07-14 22:40:29,489 INFO L628 ElimStorePlain]: treesize reduction 120, result has 54.2 percent of original size [2021-07-14 22:40:29,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-07-14 22:40:29,493 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:29,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3 treesize of output 1 [2021-07-14 22:40:29,496 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:29,550 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:29,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:29,553 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:29,606 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:29,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2021-07-14 22:40:29,609 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:29,699 INFO L628 ElimStorePlain]: treesize reduction 19, result has 85.0 percent of original size [2021-07-14 22:40:29,701 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-07-14 22:40:29,701 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:306, output treesize:108 [2021-07-14 22:40:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:29,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492194759] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:29,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 22:40:29,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2021-07-14 22:40:29,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374023846] [2021-07-14 22:40:29,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-14 22:40:29,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 22:40:29,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-14 22:40:29,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2021-07-14 22:40:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:29,856 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 22:40:29,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 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 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-07-14 22:40:29,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 22:40:30,187 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-14 22:40:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 22:40:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 22:40:30,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 22:40:30,449 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 22:40:30,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 22:40:30,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1466176588, now seen corresponding path program 10 times [2021-07-14 22:40:30,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 22:40:30,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606297864] [2021-07-14 22:40:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 22:40:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 22:40:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 22:40:30,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 22:40:30,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606297864] [2021-07-14 22:40:30,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606297864] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 22:40:30,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589581371] [2021-07-14 22:40:30,744 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 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 22:40:30,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 22:40:30,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 22:40:30,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 44 conjunts are in the unsatisfiable core [2021-07-14 22:40:30,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 22:40:30,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:30,878 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:30,880 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-14 22:40:30,880 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:30,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4 treesize of output 2 [2021-07-14 22:40:30,884 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 22:40:30,901 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 22:40:30,918 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2021-07-14 22:40:30,918 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:87, output treesize:48 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown