/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 21:38:25,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 21:38:25,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 21:38:25,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 21:38:25,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 21:38:25,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 21:38:25,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 21:38:25,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 21:38:25,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 21:38:25,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 21:38:25,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 21:38:25,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 21:38:25,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 21:38:25,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 21:38:25,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 21:38:25,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 21:38:25,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 21:38:25,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf [2021-07-14 21:38:25,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 21:38:25,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 21:38:25,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 21:38:25,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 21:38:25,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 21:38:25,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 21:38:25,567 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 21:38:25,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 21:38:25,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 21:38:25,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 21:38:25,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 21:38:25,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 21:38:25,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 21:38:25,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 21:38:25,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 21:38:25,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 21:38:25,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 21:38:25,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 21:38:25,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 21:38:25,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 21:38:25,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 21:38:25,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 21:38:25,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 21:38:25,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 21:38:25,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 21:38:25,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 21:38:25,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 21:38:25,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 21:38:25,570 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-14 21:38:25,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 21:38:25,570 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 21:38:25,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 21:38:25,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 21:38:25,570 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 21:38:25,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-14 21:38:25,571 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 21:38:25,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 21:38:25,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 21:38:25,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 21:38:25,867 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 21:38:25,868 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 21:38:25,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun-alt.wvr.bpl [2021-07-14 21:38:25,869 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun-alt.wvr.bpl' [2021-07-14 21:38:25,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 21:38:25,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 21:38:25,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 21:38:25,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 21:38:25,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 21:38:25,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 21:38:25,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 21:38:25,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 21:38:25,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 21:38:25,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... [2021-07-14 21:38:25,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 21:38:25,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 21:38:25,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 21:38:25,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 21:38:25,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 21:38:25,993 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 21:38:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 21:38:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 21:38:25,993 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 21:38:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 21:38:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 21:38:25,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 21:38:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 21:38:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 21:38:25,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 21:38:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 21:38:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 21:38:25,996 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 21:38:26,151 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 21:38:26,151 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 21:38:26,153 INFO L202 PluginConnector]: Adding new model max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:38:26 BoogieIcfgContainer [2021-07-14 21:38:26,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 21:38:26,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 21:38:26,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 21:38:26,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 21:38:26,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:38:25" (1/2) ... [2021-07-14 21:38:26,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8c7d and model type max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 09:38:26, skipping insertion in model container [2021-07-14 21:38:26,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:38:26" (2/2) ... [2021-07-14 21:38:26,158 INFO L111 eAbstractionObserver]: Analyzing ICFG max-fun-alt.wvr.bpl [2021-07-14 21:38:26,161 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 21:38:26,161 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 21:38:26,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 21:38:26,162 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 21:38:26,183 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 21:38:26,197 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 21:38:26,251 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 21:38:26,251 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 21:38:26,251 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 21:38:26,251 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 21:38:26,251 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 21:38:26,251 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 21:38:26,251 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 21:38:26,251 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 21:38:26,314 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:26,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1342021843, now seen corresponding path program 1 times [2021-07-14 21:38:26,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:26,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162205098] [2021-07-14 21:38:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:26,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:26,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162205098] [2021-07-14 21:38:26,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162205098] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 21:38:26,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 21:38:26,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 21:38:26,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137319455] [2021-07-14 21:38:26,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 21:38:26,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:26,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 21:38:26,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 21:38:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:26,481 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:26,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:26,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:26,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 21:38:26,504 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:26,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:26,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1262256245, now seen corresponding path program 1 times [2021-07-14 21:38:26,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:26,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518039125] [2021-07-14 21:38:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:38:26,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:26,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518039125] [2021-07-14 21:38:26,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518039125] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 21:38:26,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 21:38:26,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 21:38:26,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155297109] [2021-07-14 21:38:26,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 21:38:26,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:26,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 21:38:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 21:38:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:26,543 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:26,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:26,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:26,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:26,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 21:38:26,617 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1859250549, now seen corresponding path program 1 times [2021-07-14 21:38:26,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:26,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041674671] [2021-07-14 21:38:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:26,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:26,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041674671] [2021-07-14 21:38:26,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041674671] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:26,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518953571] [2021-07-14 21:38:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:26,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-14 21:38:26,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 21:38:26,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518953571] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 21:38:26,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-14 21:38:26,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-07-14 21:38:26,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857042978] [2021-07-14 21:38:26,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 21:38:26,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:26,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 21:38:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-07-14 21:38:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:26,774 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:26,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:26,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:26,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:26,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:27,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:27,022 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:27,023 INFO L82 PathProgramCache]: Analyzing trace with hash -102836375, now seen corresponding path program 1 times [2021-07-14 21:38:27,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:27,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254641191] [2021-07-14 21:38:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:27,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:27,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254641191] [2021-07-14 21:38:27,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254641191] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:27,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268537454] [2021-07-14 21:38:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:27,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-14 21:38:27,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:27,596 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:38:27,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-07-14 21:38:27,598 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:27,606 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-07-14 21:38:27,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-07-14 21:38:27,610 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:27,656 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:38:27,666 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-07-14 21:38:27,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-07-14 21:38:27,668 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:27,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:38:27,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-07-14 21:38:27,683 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:27,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:38:27,729 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-07-14 21:38:27,730 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:71 [2021-07-14 21:38:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:27,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268537454] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:27,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:38:27,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 21:38:27,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695271447] [2021-07-14 21:38:27,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 21:38:27,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:27,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 21:38:27,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-07-14 21:38:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:27,843 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:27,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:27,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:27,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:27,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:27,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:28,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:28,321 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:28,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:28,322 INFO L82 PathProgramCache]: Analyzing trace with hash -110962489, now seen corresponding path program 2 times [2021-07-14 21:38:28,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:28,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319988088] [2021-07-14 21:38:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:28,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:28,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319988088] [2021-07-14 21:38:28,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319988088] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:28,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116737273] [2021-07-14 21:38:28,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:28,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:38:28,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:38:28,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 21:38:28,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:28,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116737273] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:28,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:38:28,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-07-14 21:38:28,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617560905] [2021-07-14 21:38:28,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 21:38:28,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:28,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 21:38:28,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-07-14 21:38:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:28,501 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:28,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:28,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:28,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:28,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:28,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:28,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:38:28,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:28,890 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:28,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1992024937, now seen corresponding path program 1 times [2021-07-14 21:38:28,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:28,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136144413] [2021-07-14 21:38:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:29,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:29,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136144413] [2021-07-14 21:38:29,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136144413] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:29,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944793485] [2021-07-14 21:38:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:29,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-14 21:38:29,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:30,023 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-07-14 21:38:30,261 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2021-07-14 21:38:30,365 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_13], 2=[A, v_prenex_14]} [2021-07-14 21:38:30,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:38:30,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-07-14 21:38:30,375 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:30,474 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-07-14 21:38:30,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:38:30,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:38:30,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:38:30,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-07-14 21:38:30,482 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:30,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:38:30,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-07-14 21:38:30,487 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:30,538 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.5 percent of original size [2021-07-14 21:38:30,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:38:30,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:38:30,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-07-14 21:38:30,546 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:30,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:38:30,592 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-07-14 21:38:30,593 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:25 [2021-07-14 21:38:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:30,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944793485] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:30,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:38:30,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-07-14 21:38:30,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676514675] [2021-07-14 21:38:30,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 21:38:30,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:30,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 21:38:30,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-07-14 21:38:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:30,641 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:30,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:30,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:30,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:30,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:30,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:30,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:38:30,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:31,633 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-07-14 21:38:31,781 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-07-14 21:38:32,154 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-07-14 21:38:32,365 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-14 21:38:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:38:32,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:32,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-07-14 21:38:32,693 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:32,694 INFO L82 PathProgramCache]: Analyzing trace with hash 662963655, now seen corresponding path program 2 times [2021-07-14 21:38:32,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:32,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906788639] [2021-07-14 21:38:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:32,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:32,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906788639] [2021-07-14 21:38:32,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906788639] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:32,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119494053] [2021-07-14 21:38:32,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:32,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:38:32,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:38:32,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 21:38:32,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:32,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119494053] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:32,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:38:32,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-07-14 21:38:32,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795776415] [2021-07-14 21:38:32,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-14 21:38:32,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:32,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-14 21:38:32,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-07-14 21:38:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:32,894 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:32,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:32,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:32,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:32,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:32,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:32,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 21:38:32,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:32,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 21:38:33,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:33,337 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:33,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1589260183, now seen corresponding path program 3 times [2021-07-14 21:38:33,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:33,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091130715] [2021-07-14 21:38:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:33,905 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2021-07-14 21:38:34,080 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-07-14 21:38:34,318 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2021-07-14 21:38:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:34,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:34,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091130715] [2021-07-14 21:38:34,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091130715] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:34,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180290039] [2021-07-14 21:38:34,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:34,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-14 21:38:34,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:38:34,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-07-14 21:38:34,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:34,901 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-07-14 21:38:35,136 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-07-14 21:38:35,799 WARN L205 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-07-14 21:38:36,722 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 108 [2021-07-14 21:38:37,632 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 50 [2021-07-14 21:38:37,808 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_48], 5=[A, v_prenex_47]} [2021-07-14 21:38:37,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-07-14 21:38:37,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:38:37,863 INFO L628 ElimStorePlain]: treesize reduction 180, result has 7.7 percent of original size [2021-07-14 21:38:37,863 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-07-14 21:38:37,863 INFO L518 ElimStorePlain]: Eliminatee v_prenex_47 vanished before elimination [2021-07-14 21:38:37,864 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-14 21:38:37,864 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:209, output treesize:15 [2021-07-14 21:38:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:37,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180290039] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:37,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:38:37,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2021-07-14 21:38:37,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405215556] [2021-07-14 21:38:37,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-14 21:38:37,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:37,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-14 21:38:37,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-07-14 21:38:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:37,937 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:37,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:37,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:37,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:37,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:37,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:37,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:37,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:37,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 21:38:37,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:38,517 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2021-07-14 21:38:38,742 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2021-07-14 21:38:38,949 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2021-07-14 21:38:39,177 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-14 21:38:39,530 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 83 [2021-07-14 21:38:39,897 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 118 [2021-07-14 21:38:40,263 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 95 [2021-07-14 21:38:40,637 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 93 [2021-07-14 21:38:41,595 WARN L205 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 162 [2021-07-14 21:38:42,004 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 125 [2021-07-14 21:38:42,789 WARN L205 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 148 [2021-07-14 21:38:44,501 WARN L205 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 230 DAG size of output: 190 [2021-07-14 21:38:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 21:38:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:38:44,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-07-14 21:38:44,865 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1839623225, now seen corresponding path program 4 times [2021-07-14 21:38:44,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:44,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899673445] [2021-07-14 21:38:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:44,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:44,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899673445] [2021-07-14 21:38:44,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899673445] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:44,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287281878] [2021-07-14 21:38:44,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:45,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 21:38:45,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:38:45,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 21:38:45,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:45,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287281878] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:45,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:38:45,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-07-14 21:38:45,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464888874] [2021-07-14 21:38:45,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 21:38:45,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:38:45,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 21:38:45,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-07-14 21:38:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:45,168 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:38:45,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:38:45,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:38:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:38:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:38:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:38:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:38:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:38:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:38:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:38:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:38:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 21:38:45,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-07-14 21:38:45,661 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:38:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:38:45,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1393566103, now seen corresponding path program 5 times [2021-07-14 21:38:45,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:38:45,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239458107] [2021-07-14 21:38:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:38:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:38:46,164 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-07-14 21:38:46,406 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 34 [2021-07-14 21:38:46,663 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 57 [2021-07-14 21:38:46,780 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 152 [2021-07-14 21:38:47,205 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 85 [2021-07-14 21:38:47,322 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 151 [2021-07-14 21:38:47,769 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 84 [2021-07-14 21:38:48,042 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 53 [2021-07-14 21:38:48,294 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 47 [2021-07-14 21:38:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:38:48,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:38:48,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239458107] [2021-07-14 21:38:48,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239458107] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:38:48,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456863142] [2021-07-14 21:38:48,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:38:48,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-14 21:38:48,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:38:48,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 39 conjunts are in the unsatisfiable core [2021-07-14 21:38:48,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:38:49,186 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-07-14 21:38:49,946 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-07-14 21:38:51,660 WARN L205 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 263 [2021-07-14 21:38:53,472 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 502 [2021-07-14 21:38:58,649 WARN L205 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 606 DAG size of output: 574 [2021-07-14 21:39:05,129 WARN L205 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 748 DAG size of output: 692 [2021-07-14 21:39:07,786 WARN L205 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 737 DAG size of output: 285 [2021-07-14 21:39:07,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:39:07,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:07,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:07,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:07,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-07-14 21:39:07,979 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:08,769 WARN L205 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 274 [2021-07-14 21:39:08,770 INFO L628 ElimStorePlain]: treesize reduction 208, result has 76.5 percent of original size [2021-07-14 21:39:08,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:08,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:08,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:08,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:39:08,786 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:09,116 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-07-14 21:39:09,117 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:09,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-07-14 21:39:09,134 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:09,449 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2021-07-14 21:39:09,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:09,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-07-14 21:39:09,494 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:09,839 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2021-07-14 21:39:09,840 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:09,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:09,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-07-14 21:39:09,856 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:10,135 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2021-07-14 21:39:10,136 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:10,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:39:10,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:39:10,155 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:10,412 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2021-07-14 21:39:10,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:10,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-07-14 21:39:10,427 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:10,668 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-07-14 21:39:10,668 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:10,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:39:10,682 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:10,908 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-07-14 21:39:10,909 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:10,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:10,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-07-14 21:39:10,923 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:11,130 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-07-14 21:39:11,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:11,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:39:11,144 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:11,335 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2021-07-14 21:39:11,336 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:11,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-07-14 21:39:11,350 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:11,526 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-07-14 21:39:11,527 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:11,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:39:11,539 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:11,704 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-07-14 21:39:11,704 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:11,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:39:11,717 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:11,872 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-07-14 21:39:11,873 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:11,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 21:39:11,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:11,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:39:11,884 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:12,019 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-07-14 21:39:12,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:12,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:12,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:12,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 21:39:12,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-07-14 21:39:12,031 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:12,155 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-07-14 21:39:12,155 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 21:39:12,164 INFO L550 ElimStorePlain]: Start of recursive call 1: 30 dim-0 vars, 15 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-07-14 21:39:12,164 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 45 variables, input treesize:923, output treesize:50 [2021-07-14 21:39:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:39:12,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456863142] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:39:12,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:39:12,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2021-07-14 21:39:12,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180145752] [2021-07-14 21:39:12,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-07-14 21:39:12,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:39:12,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-07-14 21:39:12,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2021-07-14 21:39:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:39:12,250 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:39:12,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 30 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:39:12,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 21:39:12,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:39:12,934 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-07-14 21:39:13,398 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 35 [2021-07-14 21:39:13,714 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-07-14 21:39:14,162 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2021-07-14 21:39:14,688 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 78 [2021-07-14 21:39:15,662 WARN L205 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 157 [2021-07-14 21:39:17,612 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 567 DAG size of output: 192 [2021-07-14 21:39:18,509 WARN L205 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 144 [2021-07-14 21:39:21,103 WARN L205 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 305 DAG size of output: 286 [2021-07-14 21:39:22,193 WARN L205 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 161 [2021-07-14 21:39:29,125 WARN L205 SmtUtils]: Spent 6.65 s on a formula simplification. DAG size of input: 729 DAG size of output: 520 [2021-07-14 21:39:31,888 WARN L205 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 319 DAG size of output: 289 [2021-07-14 21:39:32,503 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:39:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 21:39:32,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:39:32,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:39:32,781 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:39:32,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:39:32,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1651064121, now seen corresponding path program 6 times [2021-07-14 21:39:32,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:39:32,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056376348] [2021-07-14 21:39:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:39:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:39:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:39:32,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:39:32,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056376348] [2021-07-14 21:39:32,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056376348] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:39:32,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784550977] [2021-07-14 21:39:32,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:39:32,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 21:39:32,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:39:32,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 21:39:32,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:39:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:39:33,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784550977] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:39:33,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:39:33,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2021-07-14 21:39:33,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822052657] [2021-07-14 21:39:33,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-14 21:39:33,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:39:33,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-14 21:39:33,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-07-14 21:39:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:39:33,056 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:39:33,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:39:33,057 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:39:33,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:39:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 21:39:33,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2021-07-14 21:39:33,640 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:39:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:39:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash -576893591, now seen corresponding path program 7 times [2021-07-14 21:39:33,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:39:33,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391972607] [2021-07-14 21:39:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:39:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:39:34,416 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 41 [2021-07-14 21:39:34,854 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 60 [2021-07-14 21:39:35,337 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 71 [2021-07-14 21:39:35,734 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 194 [2021-07-14 21:39:36,432 WARN L205 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 128 [2021-07-14 21:39:36,801 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 193 [2021-07-14 21:39:37,461 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 127 [2021-07-14 21:39:37,631 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 175 [2021-07-14 21:39:37,959 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 68 [2021-07-14 21:39:38,110 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 170 [2021-07-14 21:39:38,425 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 63 [2021-07-14 21:39:38,599 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2021-07-14 21:39:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:39:38,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:39:38,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391972607] [2021-07-14 21:39:38,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391972607] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:39:38,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841171578] [2021-07-14 21:39:38,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:39:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:39:38,824 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-14 21:39:38,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:39:39,320 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-07-14 21:39:39,839 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-07-14 21:39:40,973 WARN L205 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-07-14 21:39:42,120 WARN L205 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2021-07-14 21:39:45,724 WARN L205 SmtUtils]: Spent 2.91 s on a formula simplification that was a NOOP. DAG size: 417 [2021-07-14 21:39:50,845 WARN L205 SmtUtils]: Spent 3.78 s on a formula simplification. DAG size of input: 875 DAG size of output: 363 [2021-07-14 21:39:54,384 WARN L205 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 677 DAG size of output: 217 [2021-07-14 21:39:56,434 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 393 DAG size of output: 200 [2021-07-14 21:39:58,114 WARN L205 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 133 [2021-07-14 21:39:58,322 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_394, v_prenex_399], 9=[A, v_prenex_395, v_prenex_396, v_prenex_397, v_prenex_398, v_prenex_400]} [2021-07-14 21:39:58,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-07-14 21:39:58,332 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 21:39:58,482 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 10 [2021-07-14 21:39:58,483 INFO L628 ElimStorePlain]: treesize reduction 753, result has 2.0 percent of original size [2021-07-14 21:39:58,483 INFO L518 ElimStorePlain]: Eliminatee v_prenex_399 vanished before elimination [2021-07-14 21:39:58,483 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-07-14 21:39:58,483 INFO L518 ElimStorePlain]: Eliminatee v_prenex_395 vanished before elimination [2021-07-14 21:39:58,483 INFO L518 ElimStorePlain]: Eliminatee v_prenex_396 vanished before elimination [2021-07-14 21:39:58,483 INFO L518 ElimStorePlain]: Eliminatee v_prenex_397 vanished before elimination [2021-07-14 21:39:58,483 INFO L518 ElimStorePlain]: Eliminatee v_prenex_398 vanished before elimination [2021-07-14 21:39:58,483 INFO L518 ElimStorePlain]: Eliminatee v_prenex_400 vanished before elimination [2021-07-14 21:39:58,484 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 8 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-07-14 21:39:58,484 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 20 variables, input treesize:798, output treesize:15 [2021-07-14 21:39:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:39:58,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841171578] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:39:58,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:39:58,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 33 [2021-07-14 21:39:58,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226407215] [2021-07-14 21:39:58,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-07-14 21:39:58,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:39:58,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-07-14 21:39:58,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2021-07-14 21:39:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:39:58,571 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:39:58,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 21:39:58,571 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:39:59,632 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2021-07-14 21:39:59,950 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2021-07-14 21:40:00,311 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2021-07-14 21:40:00,781 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 62 [2021-07-14 21:40:01,217 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2021-07-14 21:40:02,023 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 90 [2021-07-14 21:40:02,874 WARN L205 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 100 [2021-07-14 21:40:03,674 WARN L205 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 97 [2021-07-14 21:40:05,655 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 310 DAG size of output: 220 [2021-07-14 21:40:07,732 WARN L205 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 446 DAG size of output: 357 [2021-07-14 21:40:09,921 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 333 DAG size of output: 233 [2021-07-14 21:40:12,064 WARN L205 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 328 DAG size of output: 227 [2021-07-14 21:40:18,337 WARN L205 SmtUtils]: Spent 5.94 s on a formula simplification. DAG size of input: 460 DAG size of output: 425 [2021-07-14 21:40:20,603 WARN L205 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 464 DAG size of output: 361 [2021-07-14 21:40:26,960 WARN L205 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 733 DAG size of output: 353 [2021-07-14 21:40:33,575 WARN L205 SmtUtils]: Spent 6.36 s on a formula simplification. DAG size of input: 531 DAG size of output: 428 [2021-07-14 21:40:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:40:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:40:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:40:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:40:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:40:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:40:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:40:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:40:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:40:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:40:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 21:40:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:40:34,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2021-07-14 21:40:34,053 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:40:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:40:34,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1654730041, now seen corresponding path program 8 times [2021-07-14 21:40:34,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:40:34,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921067218] [2021-07-14 21:40:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:40:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:40:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:40:34,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 21:40:34,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921067218] [2021-07-14 21:40:34,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921067218] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:40:34,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129524708] [2021-07-14 21:40:34,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:40:34,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 21:40:34,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 21:40:34,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-14 21:40:34,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 21:40:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 21:40:34,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129524708] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 21:40:34,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 21:40:34,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2021-07-14 21:40:34,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585313462] [2021-07-14 21:40:34,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-14 21:40:34,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 21:40:34,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-14 21:40:34,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-07-14 21:40:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:40:34,418 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 21:40:34,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:40:34,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-14 21:40:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-14 21:40:35,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 21:40:35,087 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 21:40:35,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 21:40:35,087 INFO L82 PathProgramCache]: Analyzing trace with hash 195124585, now seen corresponding path program 9 times [2021-07-14 21:40:35,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 21:40:35,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894363923] [2021-07-14 21:40:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 21:40:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 21:40:36,305 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 111 [2021-07-14 21:40:36,468 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 32 [2021-07-14 21:40:36,595 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 106 [2021-07-14 21:40:36,741 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 27 [2021-07-14 21:40:38,614 WARN L205 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 176 DAG size of output: 138 [2021-07-14 21:40:38,911 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 36 [2021-07-14 21:40:52,879 WARN L205 SmtUtils]: Spent 13.97 s on a formula simplification. DAG size of input: 238 DAG size of output: 257 [2021-07-14 21:40:53,605 WARN L205 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 60 [2021-07-14 21:41:56,311 WARN L205 SmtUtils]: Spent 1.05 m on a formula simplification. DAG size of input: 290 DAG size of output: 586 [2021-07-14 21:41:56,663 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 586 [2021-07-14 21:41:58,473 WARN L205 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 564 DAG size of output: 62 [2021-07-14 21:43:11,729 WARN L205 SmtUtils]: Spent 1.22 m on a formula simplification. DAG size of input: 333 DAG size of output: 774 [2021-07-14 21:43:12,068 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 774 [2021-07-14 21:43:15,275 WARN L205 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 774 DAG size of output: 114 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown