/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/three-array-min.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 21:38:45,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 21:38:45,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 21:38:45,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 21:38:45,212 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 [2021-06-14 21:38:45,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 21:38:45,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 21:38:45,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 21:38:45,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 21:38:45,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 21:38:45,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 21:38:45,240 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 21:38:45,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 21:38:45,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 21:38:45,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 21:38:45,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 21:38:45,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 21:38:45,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 21:38:45,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 21:38:45,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 21:38:45,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 21:38:45,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 21:38:45,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 21:38:45,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 21:38:45,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 21:38:45,257 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-14 21:38:45,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 21:38:45,257 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 21:38:45,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 21:38:45,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 21:38:45,258 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-14 21:38:45,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 21:38:45,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 21:38:45,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 21:38:45,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 21:38:45,545 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 21:38:45,546 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 21:38:45,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-min.wvr.bpl [2021-06-14 21:38:45,547 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-min.wvr.bpl' [2021-06-14 21:38:45,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 21:38:45,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 21:38:45,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 21:38:45,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 21:38:45,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 21:38:45,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 21:38:45,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 21:38:45,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 21:38:45,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 21:38:45,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/1) ... [2021-06-14 21:38:45,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 21:38:45,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 21:38:45,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 21:38:45,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 21:38:45,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (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 [2021-06-14 21:38:45,675 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 21:38:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 21:38:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 21:38:45,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 21:38:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 21:38:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 21:38:45,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 21:38:45,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 21:38:45,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 21:38:45,677 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 21:38:45,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 21:38:45,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 21:38:45,677 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 21:38:45,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 21:38:45,885 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 21:38:45,886 INFO L202 PluginConnector]: Adding new model three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 09:38:45 BoogieIcfgContainer [2021-06-14 21:38:45,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 21:38:45,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 21:38:45,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 21:38:45,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 21:38:45,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:38:45" (1/2) ... [2021-06-14 21:38:45,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4c3a7e and model type three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 09:38:45, skipping insertion in model container [2021-06-14 21:38:45,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-min.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 09:38:45" (2/2) ... [2021-06-14 21:38:45,907 INFO L111 eAbstractionObserver]: Analyzing ICFG three-array-min.wvr.bpl [2021-06-14 21:38:45,911 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 21:38:45,911 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 21:38:45,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 21:38:45,912 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 21:38:45,963 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-14 21:38:45,982 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 [2021-06-14 21:38:46,034 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 21:38:46,034 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 21:38:46,034 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 21:38:46,034 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 21:38:46,035 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 21:38:46,035 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 21:38:46,035 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 21:38:46,035 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 21:38:46,223 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:38:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:38:46,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1172804842, now seen corresponding path program 1 times [2021-06-14 21:38:46,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:38:46,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492316616] [2021-06-14 21:38:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:38:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:38:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-14 21:38:46,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:38:46,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492316616] [2021-06-14 21:38:46,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492316616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:38:46,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408156121] [2021-06-14 21:38:46,451 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 [2021-06-14 21:38:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:38:46,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-14 21:38:46,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:38:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-06-14 21:38:46,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408156121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:38:46,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:38:46,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 10 [2021-06-14 21:38:46,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843028253] [2021-06-14 21:38:46,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 21:38:46,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:38:46,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 21:38:46,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-06-14 21:38:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:46,767 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:38:46,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 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) [2021-06-14 21:38:46,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:47,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-14 21:38:47,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-14 21:38:47,307 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:38:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:38:47,307 INFO L82 PathProgramCache]: Analyzing trace with hash -892524900, now seen corresponding path program 2 times [2021-06-14 21:38:47,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:38:47,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075452446] [2021-06-14 21:38:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:38:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:38:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 29 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-14 21:38:47,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:38:47,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075452446] [2021-06-14 21:38:47,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075452446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:38:47,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184177359] [2021-06-14 21:38:47,418 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 [2021-06-14 21:38:47,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 21:38:47,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:38:47,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-14 21:38:47,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:38:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 23 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-14 21:38:47,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184177359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:38:47,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:38:47,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2021-06-14 21:38:47,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586970825] [2021-06-14 21:38:47,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-14 21:38:47,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:38:47,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-14 21:38:47,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-14 21:38:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:47,642 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:38:47,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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) [2021-06-14 21:38:47,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-14 21:38:47,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:48,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:38:48,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-14 21:38:48,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:38:48,569 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:38:48,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:38:48,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1155491208, now seen corresponding path program 1 times [2021-06-14 21:38:48,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:38:48,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60537090] [2021-06-14 21:38:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:38:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:38:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 232 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-06-14 21:38:48,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:38:48,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60537090] [2021-06-14 21:38:48,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60537090] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:38:48,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662976050] [2021-06-14 21:38:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-14 21:38:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:38:48,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-14 21:38:48,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:38:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 162 proven. 71 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-06-14 21:38:48,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662976050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:38:48,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:38:48,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-06-14 21:38:48,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612622829] [2021-06-14 21:38:48,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-14 21:38:48,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:38:48,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-14 21:38:48,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-06-14 21:38:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:48,866 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:38:48,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2021-06-14 21:38:48,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:38:48,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-14 21:38:48,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:38:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-14 21:38:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 21:38:49,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:38:49,309 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:38:49,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:38:49,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1198188185, now seen corresponding path program 2 times [2021-06-14 21:38:49,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:38:49,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336074941] [2021-06-14 21:38:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:38:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:38:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2021-06-14 21:38:49,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:38:49,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336074941] [2021-06-14 21:38:49,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336074941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 21:38:49,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 21:38:49,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 21:38:49,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889256479] [2021-06-14 21:38:49,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 21:38:49,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:38:49,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 21:38:49,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 21:38:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:49,399 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:38:49,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-06-14 21:38:49,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:38:49,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-06-14 21:38:49,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 21:38:49,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:38:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-14 21:38:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 21:38:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:38:49,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-14 21:38:49,439 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:38:49,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:38:49,439 INFO L82 PathProgramCache]: Analyzing trace with hash -429331542, now seen corresponding path program 3 times [2021-06-14 21:38:49,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:38:49,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448984483] [2021-06-14 21:38:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:38:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:38:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 199 proven. 236 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-14 21:38:49,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:38:49,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448984483] [2021-06-14 21:38:49,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448984483] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:38:49,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621405260] [2021-06-14 21:38:49,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:38:49,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-06-14 21:38:49,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:38:49,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-14 21:38:49,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:38:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 212 proven. 216 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-06-14 21:38:49,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621405260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:38:49,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:38:49,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-06-14 21:38:49,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516219872] [2021-06-14 21:38:49,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-14 21:38:49,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:38:49,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-14 21:38:49,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2021-06-14 21:38:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:49,969 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:38:49,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 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) [2021-06-14 21:38:49,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:38:49,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-06-14 21:38:49,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-14 21:38:49,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:38:49,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:38:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:38:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-14 21:38:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-14 21:38:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:38:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-14 21:38:51,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:38:51,577 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:38:51,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:38:51,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1767930277, now seen corresponding path program 4 times [2021-06-14 21:38:51,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:38:51,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757672796] [2021-06-14 21:38:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:39:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown