/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/two-queue.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 14:55:23,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 14:55:23,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 14:55:23,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-10 14:55:23,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-10 14:55:23,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-10 14:55:23,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-10 14:55:23,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-10 14:55:23,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-10 14:55:24,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-10 14:55:24,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-10 14:55:24,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-10 14:55:24,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 14:55:24,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 14:55:24,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 14:55:24,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 14:55:24,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 14:55:24,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 14:55:24,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 14:55:24,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 14:55:24,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 14:55:24,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 14:55:24,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 14:55:24,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 14:55:24,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-10 14:55:24,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-10 14:55:24,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-10 14:55:24,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-10 14:55:24,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-10 14:55:24,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-10 14:55:24,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-10 14:55:24,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-10 14:55:24,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-10 14:55:24,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-10 14:55:24,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-10 14:55:24,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-10 14:55:24,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-10 14:55:24,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-10 14:55:24,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 14:55:24,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 14:55:24,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 14:55:24,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random521.epf [2021-07-10 14:55:24,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 14:55:24,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 14:55:24,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 14:55:24,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 14:55:24,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 14:55:24,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 14:55:24,060 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 14:55:24,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 14:55:24,060 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 14:55:24,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 14:55:24,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 14:55:24,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 14:55:24,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 14:55:24,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 14:55:24,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 14:55:24,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 14:55:24,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-10 14:55:24,063 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 14:55:24,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 14:55:24,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 14:55:24,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 14:55:24,376 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 14:55:24,378 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 14:55:24,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/two-queue.wvr.bpl [2021-07-10 14:55:24,379 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/two-queue.wvr.bpl' [2021-07-10 14:55:24,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 14:55:24,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 14:55:24,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 14:55:24,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 14:55:24,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 14:55:24,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 14:55:24,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 14:55:24,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 14:55:24,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 14:55:24,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/1) ... [2021-07-10 14:55:24,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 14:55:24,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 14:55:24,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 14:55:24,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 14:55:24,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (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 [2021-07-10 14:55:24,485 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 14:55:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 14:55:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 14:55:24,485 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 14:55:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 14:55:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 14:55:24,485 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 14:55:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 14:55:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 14:55:24,486 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 14:55:24,695 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 14:55:24,695 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 14:55:24,697 INFO L202 PluginConnector]: Adding new model two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:55:24 BoogieIcfgContainer [2021-07-10 14:55:24,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 14:55:24,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 14:55:24,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 14:55:24,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 14:55:24,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:55:24" (1/2) ... [2021-07-10 14:55:24,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a4f14f and model type two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:55:24, skipping insertion in model container [2021-07-10 14:55:24,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "two-queue.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:55:24" (2/2) ... [2021-07-10 14:55:24,702 INFO L111 eAbstractionObserver]: Analyzing ICFG two-queue.wvr.bpl [2021-07-10 14:55:24,705 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 14:55:24,705 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 14:55:24,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 14:55:24,706 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 14:55:24,762 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-10 14:55:24,777 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-07-10 14:55:24,814 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 14:55:24,814 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 14:55:24,814 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 14:55:24,815 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 14:55:24,815 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 14:55:24,815 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 14:55:24,815 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 14:55:24,815 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 14:55:24,957 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:55:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:55:24,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1769539413, now seen corresponding path program 1 times [2021-07-10 14:55:24,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:55:24,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260418497] [2021-07-10 14:55:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:55:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:55:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:55:25,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:55:25,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260418497] [2021-07-10 14:55:25,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260418497] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:25,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531630459] [2021-07-10 14:55:25,087 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 [2021-07-10 14:55:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:55:25,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-10 14:55:25,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:55:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 14:55:25,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531630459] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 14:55:25,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-10 14:55:25,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-07-10 14:55:25,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436246749] [2021-07-10 14:55:25,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 14:55:25,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:55:25,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 14:55:25,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-10 14:55:25,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:25,240 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:55:25,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-07-10 14:55:25,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:25,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:25,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 14:55:25,501 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:55:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:55:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1984718014, now seen corresponding path program 2 times [2021-07-10 14:55:25,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:55:25,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302472309] [2021-07-10 14:55:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:55:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:55:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 14:55:25,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:55:25,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302472309] [2021-07-10 14:55:25,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302472309] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:25,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316040762] [2021-07-10 14:55:25,554 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 [2021-07-10 14:55:25,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 14:55:25,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:55:25,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-10 14:55:25,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:55:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-10 14:55:25,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316040762] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 14:55:25,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-10 14:55:25,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-07-10 14:55:25,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599049811] [2021-07-10 14:55:25,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 14:55:25,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:55:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 14:55:25,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-10 14:55:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:25,641 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:55:25,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-07-10 14:55:25,641 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:25,641 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:25,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:55:25,868 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:55:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:55:25,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1600343044, now seen corresponding path program 3 times [2021-07-10 14:55:25,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:55:25,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129186164] [2021-07-10 14:55:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:55:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:55:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:55:26,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:55:26,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129186164] [2021-07-10 14:55:26,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129186164] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:26,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284663203] [2021-07-10 14:55:26,121 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 [2021-07-10 14:55:26,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-10 14:55:26,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:55:26,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-10 14:55:26,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:55:26,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-10 14:55:26,313 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 14:55:26,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 14:55:26,316 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 14:55:26,316 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:11 [2021-07-10 14:55:26,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-07-10 14:55:26,357 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 14:55:26,359 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 14:55:26,360 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 14:55:26,360 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:7 [2021-07-10 14:55:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:55:26,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284663203] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:26,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:55:26,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-07-10 14:55:26,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977179465] [2021-07-10 14:55:26,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 14:55:26,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:55:26,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 14:55:26,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-07-10 14:55:26,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:26,462 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:55:26,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 14:55:26,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:26,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:26,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:55:27,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:55:27,001 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:55:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:55:27,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1661488804, now seen corresponding path program 4 times [2021-07-10 14:55:27,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:55:27,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340389917] [2021-07-10 14:55:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:55:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:55:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 47 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-07-10 14:55:27,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:55:27,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340389917] [2021-07-10 14:55:27,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340389917] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:27,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809380169] [2021-07-10 14:55:27,059 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 [2021-07-10 14:55:27,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 14:55:27,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:55:27,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-10 14:55:27,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:55:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 16 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-07-10 14:55:27,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809380169] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:27,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:55:27,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2021-07-10 14:55:27,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29163294] [2021-07-10 14:55:27,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 14:55:27,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:55:27,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 14:55:27,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-10 14:55:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:27,299 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:55:27,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 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) [2021-07-10 14:55:27,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:27,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:27,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:55:27,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:55:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:55:27,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:55:27,541 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:55:27,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:55:27,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1223284746, now seen corresponding path program 5 times [2021-07-10 14:55:27,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:55:27,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383700929] [2021-07-10 14:55:27,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:55:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:55:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-10 14:55:27,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:55:27,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383700929] [2021-07-10 14:55:27,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383700929] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:27,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133908030] [2021-07-10 14:55:27,955 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 [2021-07-10 14:55:27,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-07-10 14:55:27,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:55:27,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 39 conjunts are in the unsatisfiable core [2021-07-10 14:55:27,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:55:28,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-10 14:55:28,130 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 14:55:28,133 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 14:55:28,134 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 14:55:28,134 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2021-07-10 14:55:28,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-10 14:55:28,144 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 14:55:28,147 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 14:55:28,148 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 14:55:28,148 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:11 [2021-07-10 14:55:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-07-10 14:55:28,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133908030] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:28,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:55:28,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-07-10 14:55:28,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816285915] [2021-07-10 14:55:28,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 14:55:28,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:55:28,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 14:55:28,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-10 14:55:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:28,227 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:55:28,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 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) [2021-07-10 14:55:28,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:28,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:28,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:55:28,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:55:28,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:55:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:55:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-10 14:55:28,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:55:28,801 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 14:55:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:55:28,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1390678598, now seen corresponding path program 6 times [2021-07-10 14:55:28,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:55:28,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553899648] [2021-07-10 14:55:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:55:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:55:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:55:29,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:55:29,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553899648] [2021-07-10 14:55:29,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553899648] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:29,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915397383] [2021-07-10 14:55:29,163 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 [2021-07-10 14:55:29,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-07-10 14:55:29,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 14:55:29,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 23 conjunts are in the unsatisfiable core [2021-07-10 14:55:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:55:29,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-10 14:55:29,405 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 14:55:29,408 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 14:55:29,409 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 14:55:29,409 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2021-07-10 14:55:29,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-10 14:55:29,437 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 14:55:29,440 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 14:55:29,440 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 14:55:29,440 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2021-07-10 14:55:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:55:29,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915397383] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:55:29,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:55:29,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2021-07-10 14:55:29,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789652626] [2021-07-10 14:55:29,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-07-10 14:55:29,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:55:29,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-07-10 14:55:29,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2021-07-10 14:55:29,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:29,566 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:55:29,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.5) internal successors, (48), 31 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) [2021-07-10 14:55:29,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:29,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:55:29,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 14:55:29,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 14:55:29,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-10 14:55:29,567 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:55:30,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:55:30,822 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Guarantee of compatibility failed at de.uni_freiburg.informatik.ultimate.automata.partialorder.PersistentSetReduction$CompliantDfsOrder.lambda$0(PersistentSetReduction.java:137) at java.base/java.util.TimSort.countRunAndMakeAscending(TimSort.java:360) at java.base/java.util.TimSort.sort(TimSort.java:220) at java.base/java.util.Arrays.sort(Arrays.java:1515) at java.base/java.util.ArrayList.sort(ArrayList.java:1750) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetNewStateReduction.search(SleepSetNewStateReduction.java:147) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetNewStateReduction.(SleepSetNewStateReduction.java:111) at de.uni_freiburg.informatik.ultimate.automata.partialorder.PersistentSetReduction.applyNewStateReduction(PersistentSetReduction.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderReductionFacade.apply(PartialOrderReductionFacade.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:193) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:509) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-07-10 14:55:30,825 INFO L168 Benchmark]: Toolchain (without parser) took 6416.36 ms. Allocated memory was 199.2 MB in the beginning and 284.2 MB in the end (delta: 84.9 MB). Free memory was 178.3 MB in the beginning and 119.5 MB in the end (delta: 58.8 MB). Peak memory consumption was 145.0 MB. Max. memory is 8.0 GB. [2021-07-10 14:55:30,825 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 199.2 MB. Free memory is still 179.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-10 14:55:30,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.34 ms. Allocated memory is still 199.2 MB. Free memory was 178.1 MB in the beginning and 176.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-10 14:55:30,825 INFO L168 Benchmark]: Boogie Preprocessor took 11.00 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 175.8 MB in the end (delta: 944.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-10 14:55:30,825 INFO L168 Benchmark]: RCFGBuilder took 256.64 ms. Allocated memory is still 199.2 MB. Free memory was 175.7 MB in the beginning and 162.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-10 14:55:30,825 INFO L168 Benchmark]: TraceAbstraction took 6125.96 ms. Allocated memory was 199.2 MB in the beginning and 284.2 MB in the end (delta: 84.9 MB). Free memory was 161.9 MB in the beginning and 119.5 MB in the end (delta: 42.4 MB). Peak memory consumption was 128.2 MB. Max. memory is 8.0 GB. [2021-07-10 14:55:30,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 199.2 MB. Free memory is still 179.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.34 ms. Allocated memory is still 199.2 MB. Free memory was 178.1 MB in the beginning and 176.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.00 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 175.8 MB in the end (delta: 944.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 256.64 ms. Allocated memory is still 199.2 MB. Free memory was 175.7 MB in the beginning and 162.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6125.96 ms. Allocated memory was 199.2 MB in the beginning and 284.2 MB in the end (delta: 84.9 MB). Free memory was 161.9 MB in the beginning and 119.5 MB in the end (delta: 42.4 MB). Peak memory consumption was 128.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: Guarantee of compatibility failed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Guarantee of compatibility failed: de.uni_freiburg.informatik.ultimate.automata.partialorder.PersistentSetReduction$CompliantDfsOrder.lambda$0(PersistentSetReduction.java:137) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...