/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-17 10:21:44,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-17 10:21:44,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-17 10:21:44,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-17 10:21:44,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-17 10:21:44,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-17 10:21:44,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-17 10:21:44,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-17 10:21:44,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-17 10:21:44,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-17 10:21:44,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-17 10:21:44,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-17 10:21:44,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-17 10:21:44,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-17 10:21:44,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-17 10:21:44,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-17 10:21:44,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-17 10:21:44,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-17 10:21:44,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-17 10:21:44,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-17 10:21:44,391 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-17 10:21:44,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-17 10:21:44,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-17 10:21:44,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-17 10:21:44,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-17 10:21:44,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-17 10:21:44,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-17 10:21:44,419 INFO L138 SettingsManager]: * Use SBE=true [2021-06-17 10:21:44,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-17 10:21:44,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-17 10:21:44,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-17 10:21:44,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-17 10:21:44,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-17 10:21:44,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-17 10:21:44,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-17 10:21:44,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-17 10:21:44,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-17 10:21:44,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-17 10:21:44,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-17 10:21:44,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-17 10:21:44,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-17 10:21:44,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-17 10:21:44,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-17 10:21:44,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-17 10:21:44,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 10:21:44,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-17 10:21:44,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-17 10:21:44,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-17 10:21:44,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-17 10:21:44,421 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-17 10:21:44,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-17 10:21:44,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-17 10:21:44,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-17 10:21:44,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-17 10:21:44,422 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-17 10:21:44,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-17 10:21:44,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-17 10:21:44,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-17 10:21:44,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-17 10:21:44,667 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-17 10:21:44,668 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-17 10:21:44,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-06-17 10:21:44,669 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-06-17 10:21:44,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-17 10:21:44,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-17 10:21:44,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-17 10:21:44,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-17 10:21:44,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-17 10:21:44,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-17 10:21:44,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-17 10:21:44,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-17 10:21:44,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-17 10:21:44,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... [2021-06-17 10:21:44,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-17 10:21:44,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-17 10:21:44,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-17 10:21:44,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-17 10:21:44,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 10:21:44,810 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-17 10:21:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-17 10:21:44,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-17 10:21:44,811 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-17 10:21:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-17 10:21:44,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-17 10:21:44,811 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-17 10:21:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-17 10:21:44,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-17 10:21:44,811 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-17 10:21:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-17 10:21:44,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-17 10:21:44,812 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-17 10:21:44,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-17 10:21:44,998 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-17 10:21:45,000 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 10:21:45 BoogieIcfgContainer [2021-06-17 10:21:45,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-17 10:21:45,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-17 10:21:45,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-17 10:21:45,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-17 10:21:45,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 10:21:44" (1/2) ... [2021-06-17 10:21:45,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520cdaea and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 10:21:45, skipping insertion in model container [2021-06-17 10:21:45,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 10:21:45" (2/2) ... [2021-06-17 10:21:45,005 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-17 10:21:45,008 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-17 10:21:45,008 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-17 10:21:45,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-17 10:21:45,009 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-17 10:21:45,054 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-17 10:21:45,068 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 [2021-06-17 10:21:45,113 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 10:21:45,113 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 10:21:45,113 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 10:21:45,113 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 10:21:45,114 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 10:21:45,114 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 10:21:45,114 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 10:21:45,114 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-17 10:21:45,225 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:21:45,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:21:45,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1665803369, now seen corresponding path program 1 times [2021-06-17 10:21:45,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:21:45,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088460039] [2021-06-17 10:21:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:21:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:21:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-17 10:21:45,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:21:45,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088460039] [2021-06-17 10:21:45,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088460039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:45,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131732047] [2021-06-17 10:21:45,437 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 [2021-06-17 10:21:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:21:45,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-17 10:21:45,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:21:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-17 10:21:45,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131732047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:45,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 10:21:45,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-17 10:21:45,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780609490] [2021-06-17 10:21:45,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-17 10:21:45,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:21:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-17 10:21:45,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-17 10:21:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:45,745 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:21:45,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:21:45,749 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 10:21:46,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-17 10:21:46,191 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:21:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:21:46,192 INFO L82 PathProgramCache]: Analyzing trace with hash -130638363, now seen corresponding path program 2 times [2021-06-17 10:21:46,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:21:46,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765862799] [2021-06-17 10:21:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:21:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:21:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-17 10:21:46,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:21:46,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765862799] [2021-06-17 10:21:46,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765862799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:46,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775709443] [2021-06-17 10:21:46,260 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:21:46,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 10:21:46,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:21:46,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-17 10:21:46,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:21:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-17 10:21:46,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775709443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:46,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 10:21:46,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-17 10:21:46,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457446960] [2021-06-17 10:21:46,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-17 10:21:46,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:21:46,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-17 10:21:46,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-17 10:21:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:46,427 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:21:46,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 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) [2021-06-17 10:21:46,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 10:21:46,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 10:21:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 10:21:46,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:21:46,939 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:21:46,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:21:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash -15900973, now seen corresponding path program 3 times [2021-06-17 10:21:46,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:21:46,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881820616] [2021-06-17 10:21:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:21:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:21:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-17 10:21:46,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:21:46,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881820616] [2021-06-17 10:21:46,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881820616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:46,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26120496] [2021-06-17 10:21:46,995 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:21:47,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-17 10:21:47,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:21:47,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-17 10:21:47,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:21:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-17 10:21:47,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26120496] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:47,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 10:21:47,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-17 10:21:47,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642752504] [2021-06-17 10:21:47,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-17 10:21:47,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:21:47,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-17 10:21:47,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-17 10:21:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:47,206 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:21:47,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:21:47,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 10:21:47,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 10:21:47,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-17 10:21:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 10:21:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-17 10:21:47,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:21:47,873 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:21:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:21:47,874 INFO L82 PathProgramCache]: Analyzing trace with hash -572343591, now seen corresponding path program 4 times [2021-06-17 10:21:47,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:21:47,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955235805] [2021-06-17 10:21:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:21:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:21:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-17 10:21:47,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:21:47,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955235805] [2021-06-17 10:21:47,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955235805] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:47,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954403549] [2021-06-17 10:21:47,969 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:21:48,002 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 10:21:48,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:21:48,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-17 10:21:48,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:21:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-17 10:21:48,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954403549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:48,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 10:21:48,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2021-06-17 10:21:48,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064822918] [2021-06-17 10:21:48,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-17 10:21:48,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:21:48,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-17 10:21:48,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-06-17 10:21:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:48,201 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:21:48,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 10:21:48,202 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-17 10:21:48,202 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 10:21:48,202 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-17 10:21:48,202 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-17 10:21:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 10:21:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-17 10:21:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 10:21:48,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:21:48,760 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:21:48,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:21:48,761 INFO L82 PathProgramCache]: Analyzing trace with hash 29660917, now seen corresponding path program 5 times [2021-06-17 10:21:48,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:21:48,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052271320] [2021-06-17 10:21:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:21:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:21:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-17 10:21:48,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:21:48,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052271320] [2021-06-17 10:21:48,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052271320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:48,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117625908] [2021-06-17 10:21:48,880 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 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 [2021-06-17 10:21:48,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-17 10:21:48,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:21:48,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-17 10:21:48,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:21:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 20 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-17 10:21:49,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117625908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:49,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 10:21:49,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 21 [2021-06-17 10:21:49,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776535531] [2021-06-17 10:21:49,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-17 10:21:49,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 10:21:49,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-17 10:21:49,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-06-17 10:21:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:49,136 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 10:21:49,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 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) [2021-06-17 10:21:49,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-17 10:21:49,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-17 10:21:49,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-06-17 10:21:49,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 10:21:49,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 10:21:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-17 10:21:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-17 10:21:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-17 10:21:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 10:21:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-17 10:21:50,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 10:21:50,029 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 10:21:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 10:21:50,029 INFO L82 PathProgramCache]: Analyzing trace with hash -769494133, now seen corresponding path program 6 times [2021-06-17 10:21:50,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 10:21:50,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928514437] [2021-06-17 10:21:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 10:21:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 10:21:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 172 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-17 10:21:50,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 10:21:50,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928514437] [2021-06-17 10:21:50,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928514437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 10:21:50,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255168671] [2021-06-17 10:21:50,991 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 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 [2021-06-17 10:21:51,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-17 10:21:51,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 10:21:51,040 WARN L261 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 102 conjunts are in the unsatisfiable core [2021-06-17 10:21:51,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 10:21:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 10:21:52,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 10:21:52,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 10:21:52,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 10:21:52,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 55 disjoint index pairs (out of 105 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 167 [2021-06-17 10:21:52,855 INFO L550 ElimStorePlain]: Start of recursive call 2: 11 dim-0 vars, End of recursive call: 11 dim-0 vars, and 1 xjuncts. [2021-06-17 10:21:52,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 10:21:52,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 10:21:52,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 10:21:52,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 10:21:52,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 10:21:52,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 10:21:52,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 55 disjoint index pairs (out of 105 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 117 [2021-06-17 10:21:52,906 INFO L550 ElimStorePlain]: Start of recursive call 3: 11 dim-0 vars, End of recursive call: 11 dim-0 vars, and 1 xjuncts. [2021-06-17 10:21:52,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 10:21:53,390 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2021-06-17 10:21:53,391 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 10:21:53,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 689 [2021-06-17 10:24:53,662 WARN L205 SmtUtils]: Spent 3.00 m on a formula simplification. DAG size of input: 479 DAG size of output: 443 [2021-06-17 10:32:12,406 WARN L205 SmtUtils]: Spent 7.31 m on a formula simplification. DAG size of input: 532 DAG size of output: 479 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown