/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-NewStatesSleepPersistent-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 08:41:48,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 08:41:48,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 08:41:48,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 08:41:48,163 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-NewStatesSleepPersistent-NoLbe-Lockstep.epf [2021-07-10 08:41:48,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 08:41:48,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 08:41:48,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 08:41:48,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 08:41:48,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 08:41:48,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 08:41:48,194 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 08:41:48,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 08:41:48,202 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 08:41:48,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 08:41:48,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 08:41:48,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 08:41:48,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 08:41:48,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 08:41:48,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 08:41:48,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 08:41:48,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 08:41:48,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 08:41:48,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 08:41:48,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 08:41:48,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 08:41:48,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 08:41:48,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 08:41:48,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 08:41:48,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 08:41:48,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 08:41:48,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 08:41:48,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 08:41:48,204 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 08:41:48,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 08:41:48,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 08:41:48,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 08:41:48,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 08:41:48,205 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-10 08:41:48,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 08:41:48,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 08:41:48,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 08:41:48,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 08:41:48,466 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 08:41:48,467 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 08:41:48,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl [2021-07-10 08:41:48,468 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-07-10 08:41:48,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 08:41:48,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 08:41:48,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 08:41:48,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 08:41:48,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 08:41:48,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 08:41:48,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 08:41:48,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 08:41:48,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 08:41:48,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/1) ... [2021-07-10 08:41:48,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 08:41:48,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 08:41:48,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 08:41:48,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 08:41:48,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (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 08:41:48,588 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 08:41:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 08:41:48,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 08:41:48,588 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 08:41:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 08:41:48,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 08:41:48,588 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 08:41:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 08:41:48,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 08:41:48,590 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 08:41:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 08:41:48,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 08:41:48,591 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 08:41:48,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 08:41:48,822 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 08:41:48,824 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:41:48 BoogieIcfgContainer [2021-07-10 08:41:48,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 08:41:48,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 08:41:48,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 08:41:48,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 08:41:48,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 08:41:48" (1/2) ... [2021-07-10 08:41:48,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226a66a8 and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:41:48, skipping insertion in model container [2021-07-10 08:41:48,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:41:48" (2/2) ... [2021-07-10 08:41:48,828 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-07-10 08:41:48,832 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 08:41:48,832 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 08:41:48,832 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 08:41:48,833 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 08:41:48,885 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 08:41:48,902 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-10 08:41:48,956 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 08:41:48,956 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 08:41:48,956 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 08:41:48,956 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 08:41:48,956 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 08:41:48,956 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 08:41:48,956 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 08:41:48,956 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 08:41:49,130 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:41:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:41:49,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1842715496, now seen corresponding path program 1 times [2021-07-10 08:41:49,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:41:49,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464654013] [2021-07-10 08:41:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:41:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:41:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:41:49,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:41:49,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464654013] [2021-07-10 08:41:49,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464654013] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:41:49,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740391697] [2021-07-10 08:41:49,233 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 08:41:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:41:49,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-07-10 08:41:49,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:41:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:41:49,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740391697] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:41:49,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:41:49,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-07-10 08:41:49,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708359638] [2021-07-10 08:41:49,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 08:41:49,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:41:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 08:41:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 08:41:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:41:49,339 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:41:49,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 08:41:49,340 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:41:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:41:49,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 08:41:49,599 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:41:49,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:41:49,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1542091526, now seen corresponding path program 2 times [2021-07-10 08:41:49,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:41:49,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198427901] [2021-07-10 08:41:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:41:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:41:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:41:49,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:41:49,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198427901] [2021-07-10 08:41:49,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198427901] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:41:49,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964855521] [2021-07-10 08:41:49,646 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 08:41:49,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 08:41:49,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:41:49,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-10 08:41:49,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:41:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:41:49,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964855521] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:41:49,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:41:49,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-07-10 08:41:49,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813243678] [2021-07-10 08:41:49,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-10 08:41:49,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:41:49,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-10 08:41:49,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-10 08:41:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:41:49,750 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:41:49,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 08:41:49,750 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:41:49,750 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:41:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:41:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:41:50,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 08:41:50,162 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:41:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:41:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash -558557546, now seen corresponding path program 3 times [2021-07-10 08:41:50,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:41:50,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086117424] [2021-07-10 08:41:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:41:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:41:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:41:50,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:41:50,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086117424] [2021-07-10 08:41:50,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086117424] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:41:50,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866630602] [2021-07-10 08:41:50,347 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 08:41:50,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-10 08:41:50,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:41:50,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-10 08:41:50,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:41:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:41:50,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866630602] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:41:50,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:41:50,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-07-10 08:41:50,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323398778] [2021-07-10 08:41:50,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-10 08:41:50,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:41:50,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-10 08:41:50,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-07-10 08:41:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:41:50,700 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:41:50,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 08:41:50,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:41:50,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:41:50,703 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:41:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:41:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:41:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 08:41:51,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 08:41:51,217 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:41:51,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:41:51,218 INFO L82 PathProgramCache]: Analyzing trace with hash -257218010, now seen corresponding path program 4 times [2021-07-10 08:41:51,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:41:51,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616038904] [2021-07-10 08:41:51,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:41:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 08:41:54,295 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 80 DAG size of output: 25 [2021-07-10 08:42:09,378 WARN L205 SmtUtils]: Spent 15.03 s on a formula simplification. DAG size of input: 102 DAG size of output: 22 [2021-07-10 08:42:12,520 WARN L205 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 90 DAG size of output: 19 [2021-07-10 08:42:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:42:12,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 08:42:12,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616038904] [2021-07-10 08:42:12,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616038904] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:42:12,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936643942] [2021-07-10 08:42:12,690 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 08:42:12,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 08:42:12,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 08:42:12,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-10 08:42:12,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 08:42:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 08:42:13,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936643942] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 08:42:13,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 08:42:13,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-07-10 08:42:13,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952168106] [2021-07-10 08:42:13,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-10 08:42:13,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 08:42:13,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-10 08:42:13,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2021-07-10 08:42:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:42:13,479 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 08:42:13,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.36) internal successors, (59), 24 states have internal predecessors, (59), 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 08:42:13,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:42:13,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:42:13,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 08:42:13,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 08:42:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 08:42:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-10 08:42:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 08:42:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 08:42:14,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-07-10 08:42:14,913 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 08:42:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 08:42:14,913 INFO L82 PathProgramCache]: Analyzing trace with hash -740771458, now seen corresponding path program 5 times [2021-07-10 08:42:14,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 08:42:14,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856440897] [2021-07-10 08:42:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 08:42:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown