/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/parallel/misc-1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 18:33:38,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 18:33:38,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 18:33:38,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 18:33:38,597 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 [2021-07-14 18:33:38,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 18:33:38,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 18:33:38,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 18:33:38,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 18:33:38,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 18:33:38,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 18:33:38,625 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 18:33:38,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 18:33:38,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 18:33:38,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 18:33:38,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 18:33:38,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 18:33:38,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 18:33:38,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 18:33:38,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 18:33:38,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 18:33:38,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 18:33:38,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 18:33:38,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 18:33:38,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 18:33:38,628 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 18:33:38,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 18:33:38,628 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 18:33:38,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 18:33:38,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 18:33:38,628 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 18:33:38,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 18:33:38,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 18:33:38,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 18:33:38,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 18:33:38,886 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 18:33:38,886 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 18:33:38,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-1.wvr.bpl [2021-07-14 18:33:38,887 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-1.wvr.bpl' [2021-07-14 18:33:38,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 18:33:38,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 18:33:38,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 18:33:38,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 18:33:38,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 18:33:38,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 18:33:38,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 18:33:38,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 18:33:38,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 18:33:38,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... [2021-07-14 18:33:38,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 18:33:38,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 18:33:38,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 18:33:38,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 18:33:38,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 18:33:38,994 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 18:33:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 18:33:38,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 18:33:38,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 18:33:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 18:33:38,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 18:33:38,997 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 18:33:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 18:33:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 18:33:38,998 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 18:33:39,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 18:33:39,162 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 18:33:39,163 INFO L202 PluginConnector]: Adding new model misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:33:39 BoogieIcfgContainer [2021-07-14 18:33:39,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 18:33:39,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 18:33:39,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 18:33:39,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 18:33:39,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:38" (1/2) ... [2021-07-14 18:33:39,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c2ad51 and model type misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:33:39, skipping insertion in model container [2021-07-14 18:33:39,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:33:39" (2/2) ... [2021-07-14 18:33:39,172 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-1.wvr.bpl [2021-07-14 18:33:39,176 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 18:33:39,176 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 18:33:39,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 18:33:39,176 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 18:33:39,199 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-14 18:33:39,230 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 [2021-07-14 18:33:39,272 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 18:33:39,272 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 18:33:39,272 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 18:33:39,272 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 18:33:39,273 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 18:33:39,273 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 18:33:39,273 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 18:33:39,273 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 18:33:39,340 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:33:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:39,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2065750347, now seen corresponding path program 1 times [2021-07-14 18:33:39,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:39,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625257367] [2021-07-14 18:33:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:33:39,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:39,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625257367] [2021-07-14 18:33:39,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625257367] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:39,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939350492] [2021-07-14 18:33:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:39,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-14 18:33:39,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:33:39,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939350492] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:39,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:33:39,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-07-14 18:33:39,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557688535] [2021-07-14 18:33:39,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 18:33:39,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:33:39,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 18:33:39,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 18:33:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:39,708 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:33:39,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:33:39,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:33:40,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 18:33:40,041 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:33:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:40,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1774725467, now seen corresponding path program 1 times [2021-07-14 18:33:40,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:40,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679528896] [2021-07-14 18:33:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:33:40,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:40,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679528896] [2021-07-14 18:33:40,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679528896] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:40,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004877559] [2021-07-14 18:33:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:40,510 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-14 18:33:40,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:40,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-07-14 18:33:40,744 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 18:33:40,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 18:33:40,758 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 18:33:40,758 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:9 [2021-07-14 18:33:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:33:40,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004877559] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:40,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:33:40,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2021-07-14 18:33:40,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582092470] [2021-07-14 18:33:40,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-14 18:33:40,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:33:40,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-14 18:33:40,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-07-14 18:33:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:40,821 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:33:40,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:33:40,821 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:33:40,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 18:33:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-14 18:33:41,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:41,961 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:33:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:41,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1095628001, now seen corresponding path program 2 times [2021-07-14 18:33:41,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:41,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816920699] [2021-07-14 18:33:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-07-14 18:33:42,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:42,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816920699] [2021-07-14 18:33:42,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816920699] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:42,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827190303] [2021-07-14 18:33:42,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:42,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 18:33:42,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:33:42,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-14 18:33:42,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-07-14 18:33:42,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827190303] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:42,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:33:42,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-07-14 18:33:42,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515976674] [2021-07-14 18:33:42,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 18:33:42,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:33:42,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 18:33:42,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-14 18:33:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:42,133 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:33:42,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:33:42,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 18:33:42,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-14 18:33:42,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 18:33:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 18:33:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:33:42,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:42,472 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:33:42,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:42,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1718143862, now seen corresponding path program 1 times [2021-07-14 18:33:42,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:42,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984600574] [2021-07-14 18:33:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-14 18:33:43,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:43,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984600574] [2021-07-14 18:33:43,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984600574] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:43,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514125194] [2021-07-14 18:33:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:43,218 WARN L261 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 65 conjunts are in the unsatisfiable core [2021-07-14 18:33:43,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:44,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 24 [2021-07-14 18:33:44,181 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 18:33:44,182 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 18:33:44,183 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 18:33:44,183 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:8 [2021-07-14 18:33:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 18:33:44,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514125194] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:44,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:33:44,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28] total 50 [2021-07-14 18:33:44,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812775749] [2021-07-14 18:33:44,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-07-14 18:33:44,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:33:44,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-07-14 18:33:44,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2205, Unknown=0, NotChecked=0, Total=2550 [2021-07-14 18:33:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:44,265 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:33:44,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 50 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:33:44,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 18:33:44,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 18:33:44,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:33:44,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 18:33:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 18:33:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 18:33:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-14 18:33:46,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:46,988 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 18:33:46,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:46,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1982038790, now seen corresponding path program 3 times [2021-07-14 18:33:46,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:46,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536923403] [2021-07-14 18:33:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-07-14 18:33:47,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:47,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536923403] [2021-07-14 18:33:47,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536923403] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:47,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991140095] [2021-07-14 18:33:47,531 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:47,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-07-14 18:33:47,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:33:47,581 WARN L261 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 65 conjunts are in the unsatisfiable core [2021-07-14 18:33:47,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:48,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 18:33:48,685 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-07-14 18:33:48,686 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 18:33:48,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 25 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 30 case distinctions, treesize of input 51 treesize of output 307 [2021-07-14 18:33:49,024 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 708 DAG size of output: 417 [2021-07-14 18:33:49,161 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 723 DAG size of output: 432 [2021-07-14 18:33:49,596 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 1687 DAG size of output: 599 [2021-07-14 18:33:50,239 WARN L205 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 1705 DAG size of output: 621 [2021-07-14 18:33:50,459 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 586 DAG size of output: 592 [2021-07-14 18:33:50,632 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 590 DAG size of output: 590 [2021-07-14 18:33:50,749 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 358 [2021-07-14 18:33:51,114 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 522 DAG size of output: 400 [2021-07-14 18:33:51,306 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 683 DAG size of output: 551 [2021-07-14 18:33:51,494 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 466 [2021-07-14 18:33:51,632 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 403 [2021-07-14 18:33:51,755 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 351 [2021-07-14 18:33:51,992 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 553 DAG size of output: 488 [2021-07-14 18:33:52,215 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 725 DAG size of output: 639 [2021-07-14 18:33:52,583 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 944 DAG size of output: 837 [2021-07-14 18:33:53,205 WARN L205 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 1459 DAG size of output: 1216 [2021-07-14 18:33:53,815 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 1459 DAG size of output: 1216 [2021-07-14 18:33:54,710 WARN L205 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 1462 DAG size of output: 1218 [2021-07-14 18:33:55,897 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1157 DAG size of output: 1474 [2021-07-14 18:33:57,130 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 294 [2021-07-14 18:33:57,530 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 552 DAG size of output: 425 [2021-07-14 18:33:58,619 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 2785 DAG size of output: 1626 [2021-07-14 18:33:59,691 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 2785 DAG size of output: 1626 [2021-07-14 18:34:00,899 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 2789 DAG size of output: 1630 [2021-07-14 18:34:01,249 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 986 DAG size of output: 970 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown