/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-bad/dot-product-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 13:04:44,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 13:04:44,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 13:04:44,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-10 13:04:44,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-10 13:04:44,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-10 13:04:44,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-10 13:04:44,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-10 13:04:44,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-10 13:04:44,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-10 13:04:44,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-10 13:04:44,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-10 13:04:44,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 13:04:44,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 13:04:44,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 13:04:44,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 13:04:44,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 13:04:44,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 13:04:44,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 13:04:44,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 13:04:44,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 13:04:44,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 13:04:44,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 13:04:44,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 13:04:44,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-10 13:04:44,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-10 13:04:44,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-10 13:04:44,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-10 13:04:44,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-10 13:04:44,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-07-10 13:04:44,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 13:04:44,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 13:04:44,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 13:04:44,504 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 [2021-07-10 13:04:44,556 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 13:04:44,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 13:04:44,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 13:04:44,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 13:04:44,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 13:04:44,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 13:04:44,557 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 13:04:44,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 13:04:44,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 13:04:44,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 13:04:44,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 13:04:44,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 13:04:44,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 13:04:44,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 13:04:44,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 13:04:44,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 13:04:44,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 13:04:44,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 13:04:44,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 13:04:44,560 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 13:04:44,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 13:04:44,560 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 13:04:44,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 13:04:44,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 13:04:44,560 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 13:04:44,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 13:04:44,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 13:04:44,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 13:04:44,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 13:04:44,848 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 13:04:44,848 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 13:04:44,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/dot-product-alt.wvr.bpl [2021-07-10 13:04:44,849 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/dot-product-alt.wvr.bpl' [2021-07-10 13:04:44,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 13:04:44,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 13:04:44,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 13:04:44,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 13:04:44,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 13:04:44,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 13:04:44,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 13:04:44,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 13:04:44,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 13:04:44,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... [2021-07-10 13:04:44,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 13:04:44,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 13:04:44,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 13:04:44,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 13:04:44,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 13:04:44,950 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 13:04:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 13:04:44,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 13:04:44,951 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 13:04:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 13:04:44,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 13:04:44,951 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 13:04:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 13:04:44,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 13:04:44,951 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 13:04:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 13:04:44,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 13:04:44,952 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 13:04:45,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 13:04:45,066 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 13:04:45,067 INFO L202 PluginConnector]: Adding new model dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 01:04:45 BoogieIcfgContainer [2021-07-10 13:04:45,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 13:04:45,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 13:04:45,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 13:04:45,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 13:04:45,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:04:44" (1/2) ... [2021-07-10 13:04:45,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467eecc7 and model type dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 01:04:45, skipping insertion in model container [2021-07-10 13:04:45,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 01:04:45" (2/2) ... [2021-07-10 13:04:45,071 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-alt.wvr.bpl [2021-07-10 13:04:45,074 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 13:04:45,074 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 13:04:45,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 13:04:45,075 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 13:04:45,102 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 13:04:45,115 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 13:04:45,193 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 13:04:45,193 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 13:04:45,194 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 13:04:45,194 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 13:04:45,194 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 13:04:45,194 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 13:04:45,194 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 13:04:45,194 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 13:04:45,320 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:04:45,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:04:45,326 INFO L82 PathProgramCache]: Analyzing trace with hash -672311696, now seen corresponding path program 1 times [2021-07-10 13:04:45,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:04:45,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154744103] [2021-07-10 13:04:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:04:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:04:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 13:04:45,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:04:45,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154744103] [2021-07-10 13:04:45,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154744103] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:04:45,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080521595] [2021-07-10 13:04:45,574 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 13:04:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:04:45,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-10 13:04:45,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:04:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 13:04:45,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080521595] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:04:45,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:04:45,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-07-10 13:04:45,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431052608] [2021-07-10 13:04:45,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-10 13:04:45,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:04:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-10 13:04:45,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-07-10 13:04:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:04:45,754 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:04:45,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 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 13:04:45,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:04:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 13:04:46,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 13:04:46,059 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:04:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:04:46,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1511774198, now seen corresponding path program 2 times [2021-07-10 13:04:46,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:04:46,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418681361] [2021-07-10 13:04:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:04:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:04:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 13:04:46,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:04:46,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418681361] [2021-07-10 13:04:46,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418681361] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:04:46,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450189369] [2021-07-10 13:04:46,157 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 13:04:46,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 13:04:46,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:04:46,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-10 13:04:46,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:04:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 13:04:46,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450189369] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:04:46,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:04:46,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-07-10 13:04:46,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019030395] [2021-07-10 13:04:46,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 13:04:46,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:04:46,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 13:04:46,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-07-10 13:04:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:04:46,368 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:04:46,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:04:46,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 13:04:46,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:04:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 13:04:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 13:04:46,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:04:46,737 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:04:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:04:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1205043563, now seen corresponding path program 3 times [2021-07-10 13:04:46,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:04:46,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492182661] [2021-07-10 13:04:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:04:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:04:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:04:46,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:04:46,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492182661] [2021-07-10 13:04:46,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492182661] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:04:46,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839260756] [2021-07-10 13:04:46,872 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 13:04:46,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-07-10 13:04:46,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:04:46,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-10 13:04:46,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:04:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 53 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 13:04:47,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839260756] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:04:47,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:04:47,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-07-10 13:04:47,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197519033] [2021-07-10 13:04:47,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 13:04:47,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:04:47,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 13:04:47,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-07-10 13:04:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:04:47,122 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:04:47,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 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 13:04:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 13:04:47,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 13:04:47,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:04:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 13:04:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 13:04:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-10 13:04:47,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:04:47,825 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:04:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:04:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 558443225, now seen corresponding path program 4 times [2021-07-10 13:04:47,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:04:47,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410532727] [2021-07-10 13:04:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:04:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:04:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 13:04:49,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:04:49,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410532727] [2021-07-10 13:04:49,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410532727] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:04:49,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894130842] [2021-07-10 13:04:49,061 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 13:04:49,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 13:04:49,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:04:49,098 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-07-10 13:04:49,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:04:54,575 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 67 [2021-07-10 13:04:56,666 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 71 [2021-07-10 13:04:58,768 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 71 [2021-07-10 13:05:00,889 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 75 [2021-07-10 13:05:02,986 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 70 [2021-07-10 13:05:03,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:05:03,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:05:03,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:05:03,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:05:03,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 111 [2021-07-10 13:05:03,035 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-10 13:05:03,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 13:05:03,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:05:03,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:05:03,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 13:05:03,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:05:03,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 13:05:03,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 77 [2021-07-10 13:05:03,060 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-10 13:05:03,068 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 13:05:03,196 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-10 13:05:03,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 13:05:03,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 273 [2021-07-10 13:05:03,501 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 128 [2021-07-10 13:05:03,802 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 158 [2021-07-10 13:05:04,442 WARN L205 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 179 [2021-07-10 13:05:05,928 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 242 DAG size of output: 201 [2021-07-10 13:05:09,566 WARN L205 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 273 DAG size of output: 220 [2021-07-10 13:05:13,145 WARN L205 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 273 DAG size of output: 220 [2021-07-10 13:05:16,997 WARN L205 SmtUtils]: Spent 3.85 s on a formula simplification. DAG size of input: 295 DAG size of output: 242 [2021-07-10 13:05:20,561 WARN L205 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 232 DAG size of output: 232 [2021-07-10 13:05:20,911 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 150 [2021-07-10 13:05:21,333 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 175 [2021-07-10 13:05:22,403 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 221 DAG size of output: 196 [2021-07-10 13:05:25,114 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 251 DAG size of output: 213 [2021-07-10 13:05:30,549 WARN L205 SmtUtils]: Spent 5.42 s on a formula simplification. DAG size of input: 218 DAG size of output: 230 [2021-07-10 13:05:32,046 WARN L205 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 210 DAG size of output: 210 [2021-07-10 13:05:32,234 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 135 [2021-07-10 13:05:32,628 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 156 [2021-07-10 13:05:33,627 WARN L205 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 188 [2021-07-10 13:05:34,223 WARN L205 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 192 [2021-07-10 13:05:34,419 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 143 [2021-07-10 13:05:34,749 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 150 [2021-07-10 13:05:35,531 WARN L205 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 189 [2021-07-10 13:05:37,493 WARN L205 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 213 DAG size of output: 215 [2021-07-10 13:05:37,717 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 176 [2021-07-10 13:05:38,344 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 257 [2021-07-10 13:05:39,221 WARN L205 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 307 [2021-07-10 13:05:41,668 WARN L205 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 375 DAG size of output: 357 [2021-07-10 13:05:47,950 WARN L205 SmtUtils]: Spent 6.18 s on a formula simplification. DAG size of input: 462 DAG size of output: 432 [2021-07-10 13:06:05,139 WARN L205 SmtUtils]: Spent 17.19 s on a formula simplification. DAG size of input: 538 DAG size of output: 508 [2021-07-10 13:06:47,398 WARN L205 SmtUtils]: Spent 42.26 s on a formula simplification. DAG size of input: 615 DAG size of output: 568 [2021-07-10 13:08:27,825 WARN L205 SmtUtils]: Spent 1.67 m on a formula simplification. DAG size of input: 695 DAG size of output: 636 [2021-07-10 13:12:26,529 WARN L205 SmtUtils]: Spent 3.98 m on a formula simplification. DAG size of input: 786 DAG size of output: 707 [2021-07-10 13:16:25,091 WARN L205 SmtUtils]: Spent 3.98 m on a formula simplification. DAG size of input: 786 DAG size of output: 707 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown