/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-more/max-fun-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 22:04:39,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 22:04:39,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 22:04:39,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 22:04:39,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-14 22:04:39,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-14 22:04:39,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-14 22:04:39,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-14 22:04:39,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-14 22:04:39,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-14 22:04:39,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-14 22:04:39,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-14 22:04:39,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-14 22:04:39,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-14 22:04:39,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-14 22:04:39,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-14 22:04:39,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-14 22:04:39,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-14 22:04:39,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 22:04:39,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 22:04:39,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 22:04:39,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 22:04:39,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 22:04:39,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 22:04:39,464 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 22:04:39,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 22:04:39,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 22:04:39,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 22:04:39,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 22:04:39,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 22:04:39,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 22:04:39,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 22:04:39,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 22:04:39,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 22:04:39,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 22:04:39,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 22:04:39,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 22:04:39,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 22:04:39,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 22:04:39,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 22:04:39,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 22:04:39,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 22:04:39,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 22:04:39,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-14 22:04:39,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 22:04:39,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 22:04:39,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 22:04:39,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 22:04:39,748 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 22:04:39,749 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 22:04:39,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun-alt.wvr.bpl [2021-06-14 22:04:39,750 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-fun-alt.wvr.bpl' [2021-06-14 22:04:39,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 22:04:39,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 22:04:39,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 22:04:39,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 22:04:39,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 22:04:39,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 22:04:39,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 22:04:39,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 22:04:39,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 22:04:39,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/1) ... [2021-06-14 22:04:39,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 22:04:39,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 22:04:39,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 22:04:39,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 22:04:39,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (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) [2021-06-14 22:04:39,865 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 22:04:39,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 22:04:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 22:04:39,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 22:04:39,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 22:04:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 22:04:39,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 22:04:39,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 22:04:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 22:04:39,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 22:04:39,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 22:04:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 22:04:39,867 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 22:04:40,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 22:04:40,037 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 22:04:40,039 INFO L202 PluginConnector]: Adding new model max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 10:04:40 BoogieIcfgContainer [2021-06-14 22:04:40,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 22:04:40,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 22:04:40,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 22:04:40,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 22:04:40,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:04:39" (1/2) ... [2021-06-14 22:04:40,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fcdaee and model type max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 10:04:40, skipping insertion in model container [2021-06-14 22:04:40,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 10:04:40" (2/2) ... [2021-06-14 22:04:40,044 INFO L111 eAbstractionObserver]: Analyzing ICFG max-fun-alt.wvr.bpl [2021-06-14 22:04:40,048 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 22:04:40,048 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 22:04:40,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 22:04:40,049 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 22:04:40,102 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-14 22:04:40,115 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 [2021-06-14 22:04:40,197 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 22:04:40,197 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 22:04:40,197 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 22:04:40,198 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 22:04:40,198 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 22:04:40,198 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 22:04:40,198 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 22:04:40,199 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 22:04:40,360 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:04:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:04:40,365 INFO L82 PathProgramCache]: Analyzing trace with hash -650399523, now seen corresponding path program 1 times [2021-06-14 22:04:40,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:04:40,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332300331] [2021-06-14 22:04:40,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:04:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:04:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-14 22:04:40,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:04:40,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332300331] [2021-06-14 22:04:40,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332300331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:40,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530990831] [2021-06-14 22:04:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:04:40,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-14 22:04:40,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:04:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-14 22:04:40,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530990831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:40,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:04:40,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-14 22:04:40,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768484895] [2021-06-14 22:04:40,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 22:04:40,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:04:40,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 22:04:40,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-14 22:04:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:40,802 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:04:40,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 22:04:40,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:41,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-14 22:04:41,229 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:04:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:04:41,230 INFO L82 PathProgramCache]: Analyzing trace with hash 527007267, now seen corresponding path program 1 times [2021-06-14 22:04:41,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:04:41,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734191994] [2021-06-14 22:04:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:04:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:04:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-14 22:04:41,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:04:41,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734191994] [2021-06-14 22:04:41,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734191994] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 22:04:41,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 22:04:41,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-14 22:04:41,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715276441] [2021-06-14 22:04:41,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-14 22:04:41,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:04:41,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-14 22:04:41,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-14 22:04:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:41,270 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:04:41,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 22:04:41,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:41,270 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:41,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:41,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:41,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-14 22:04:41,313 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:04:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:04:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1449377417, now seen corresponding path program 2 times [2021-06-14 22:04:41,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:04:41,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368736541] [2021-06-14 22:04:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:04:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:04:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-14 22:04:41,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:04:41,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368736541] [2021-06-14 22:04:41,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368736541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:41,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48159462] [2021-06-14 22:04:41,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:41,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 22:04:41,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:04:41,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-14 22:04:41,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:04:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-14 22:04:41,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48159462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:41,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:04:41,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-14 22:04:41,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032707500] [2021-06-14 22:04:41,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-14 22:04:41,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:04:41,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-14 22:04:41,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-06-14 22:04:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:41,656 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:04:41,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 22:04:41,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:41,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:41,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:42,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:42,177 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:04:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:04:42,177 INFO L82 PathProgramCache]: Analyzing trace with hash 126115117, now seen corresponding path program 3 times [2021-06-14 22:04:42,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:04:42,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346923682] [2021-06-14 22:04:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:04:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:04:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-14 22:04:42,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:04:42,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346923682] [2021-06-14 22:04:42,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346923682] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:42,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250714289] [2021-06-14 22:04:42,297 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 [2021-06-14 22:04:42,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-14 22:04:42,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:04:42,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-14 22:04:42,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:04:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-14 22:04:42,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250714289] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:42,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:04:42,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2021-06-14 22:04:42,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649196372] [2021-06-14 22:04:42,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-14 22:04:42,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:04:42,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-14 22:04:42,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-14 22:04:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:42,468 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:04:42,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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) [2021-06-14 22:04:42,468 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:42,468 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:42,468 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:42,468 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:43,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-14 22:04:43,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:43,248 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:04:43,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:04:43,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1599935215, now seen corresponding path program 4 times [2021-06-14 22:04:43,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:04:43,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849530196] [2021-06-14 22:04:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:04:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:04:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 21 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-14 22:04:43,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:04:43,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849530196] [2021-06-14 22:04:43,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849530196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:43,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974474158] [2021-06-14 22:04:43,391 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 [2021-06-14 22:04:43,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 22:04:43,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:04:43,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-14 22:04:43,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:04:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-14 22:04:43,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974474158] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:43,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:04:43,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 25 [2021-06-14 22:04:43,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134059395] [2021-06-14 22:04:43,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-14 22:04:43,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:04:43,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-14 22:04:43,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2021-06-14 22:04:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:43,701 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:04:43,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 22:04:43,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:43,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:43,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:43,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-14 22:04:43,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:04:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:04:44,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:44,347 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:04:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:04:44,347 INFO L82 PathProgramCache]: Analyzing trace with hash 493188375, now seen corresponding path program 5 times [2021-06-14 22:04:44,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:04:44,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375263778] [2021-06-14 22:04:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:04:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:04:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 67 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-14 22:04:44,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:04:44,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375263778] [2021-06-14 22:04:44,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375263778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:44,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68664114] [2021-06-14 22:04:44,456 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:44,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-14 22:04:44,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:04:44,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-14 22:04:44,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:04:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-14 22:04:44,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68664114] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:44,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:04:44,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2021-06-14 22:04:44,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923502610] [2021-06-14 22:04:44,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-14 22:04:44,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:04:44,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-14 22:04:44,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2021-06-14 22:04:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:44,743 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:04:44,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 22:04:44,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:44,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:44,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:44,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:04:44,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:04:44,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:04:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:04:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-14 22:04:45,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:45,390 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:04:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:04:45,390 INFO L82 PathProgramCache]: Analyzing trace with hash -309624935, now seen corresponding path program 6 times [2021-06-14 22:04:45,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:04:45,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944350320] [2021-06-14 22:04:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:04:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:04:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 41 proven. 199 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-14 22:04:45,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:04:45,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944350320] [2021-06-14 22:04:45,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944350320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:45,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947168591] [2021-06-14 22:04:45,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:45,598 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-14 22:04:45,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:04:45,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-14 22:04:45,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:04:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 42 proven. 197 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-14 22:04:45,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947168591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:04:45,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:04:45,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 33 [2021-06-14 22:04:45,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27272586] [2021-06-14 22:04:45,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-14 22:04:45,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:04:45,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-14 22:04:45,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=829, Unknown=0, NotChecked=0, Total=1056 [2021-06-14 22:04:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:45,945 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:04:45,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 22:04:45,945 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:45,945 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:45,945 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:45,945 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:04:45,945 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:04:45,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-14 22:04:45,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:04:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:04:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:04:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:04:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-14 22:04:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:04:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-14 22:04:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-14 22:04:46,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:04:46,915 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:04:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:04:46,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1832403839, now seen corresponding path program 7 times [2021-06-14 22:04:46,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:04:46,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174422678] [2021-06-14 22:04:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:04:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:11:07,720 WARN L205 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 230 DAG size of output: 145 [2021-06-14 22:11:07,913 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 36 [2021-06-14 22:11:08,361 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 45 [2021-06-14 22:11:10,039 WARN L205 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 288 DAG size of output: 113 [2021-06-14 22:12:01,914 WARN L205 SmtUtils]: Spent 51.84 s on a formula simplification. DAG size of input: 350 DAG size of output: 177 [2021-06-14 22:12:02,168 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 40 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown