/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-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 13:15:24,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 13:15:24,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 13:15:24,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 13:15:24,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 13:15:24,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 13:15:24,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 13:15:24,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 13:15:24,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 13:15:24,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 13:15:24,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 13:15:24,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 13:15:24,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 13:15:24,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 13:15:24,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 13:15:24,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 13:15:24,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-10 13:15:24,210 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 13:15:24,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 13:15:24,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 13:15:24,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 13:15:24,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 13:15:24,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 13:15:24,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 13:15:24,225 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 13:15:24,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 13:15:24,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 13:15:24,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 13:15:24,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 13:15:24,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 13:15:24,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 13:15:24,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 13:15:24,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 13:15:24,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 13:15:24,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 13:15:24,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 13:15:24,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 13:15:24,227 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 13:15:24,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 13:15:24,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 13:15:24,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 13:15:24,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 13:15:24,237 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 13:15:24,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 13:15:24,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 13:15:24,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 13:15:24,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 13:15:24,447 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 13:15:24,448 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 13:15:24,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl [2021-07-10 13:15:24,449 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl' [2021-07-10 13:15:24,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 13:15:24,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 13:15:24,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 13:15:24,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 13:15:24,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 13:15:24,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 13:15:24,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 13:15:24,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 13:15:24,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 13:15:24,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/1) ... [2021-07-10 13:15:24,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 13:15:24,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 13:15:24,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 13:15:24,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 13:15:24,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (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 13:15:24,561 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 13:15:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 13:15:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 13:15:24,562 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 13:15:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 13:15:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 13:15:24,562 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 13:15:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 13:15:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 13:15:24,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 13:15:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 13:15:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 13:15:24,564 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 13:15:24,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 13:15:24,729 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 13:15:24,730 INFO L202 PluginConnector]: Adding new model max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 01:15:24 BoogieIcfgContainer [2021-07-10 13:15:24,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 13:15:24,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 13:15:24,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 13:15:24,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 13:15:24,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:15:24" (1/2) ... [2021-07-10 13:15:24,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbf4da0 and model type max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 01:15:24, skipping insertion in model container [2021-07-10 13:15:24,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 01:15:24" (2/2) ... [2021-07-10 13:15:24,735 INFO L111 eAbstractionObserver]: Analyzing ICFG max-array.wvr.bpl [2021-07-10 13:15:24,739 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 13:15:24,739 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 13:15:24,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 13:15:24,740 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 13:15:24,765 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 13:15:24,781 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 13:15:24,900 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 13:15:24,900 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 13:15:24,900 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 13:15:24,901 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 13:15:24,901 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 13:15:24,901 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 13:15:24,901 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 13:15:24,901 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 13:15:25,043 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:15:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:15:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash -650399523, now seen corresponding path program 1 times [2021-07-10 13:15:25,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:15:25,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071830092] [2021-07-10 13:15:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:15:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:15:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 13:15:25,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:15:25,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071830092] [2021-07-10 13:15:25,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071830092] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:25,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051950759] [2021-07-10 13:15:25,258 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 13:15:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:15:25,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-10 13:15:25,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:15:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 13:15:25,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051950759] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:25,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:15:25,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 13:15:25,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845130892] [2021-07-10 13:15:25,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 13:15:25,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:15:25,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 13:15:25,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-10 13:15:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:25,534 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:15:25,535 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) [2021-07-10 13:15:25,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:15:25,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 13:15:25,945 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:15:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:15:25,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1848126041, now seen corresponding path program 2 times [2021-07-10 13:15:25,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:15:25,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895833276] [2021-07-10 13:15:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:15:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:15:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:15:26,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:15:26,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895833276] [2021-07-10 13:15:26,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895833276] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:26,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401619939] [2021-07-10 13:15:26,037 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 13:15:26,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 13:15:26,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:15:26,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 13:15:26,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:15:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:15:26,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401619939] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:26,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:15:26,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-07-10 13:15:26,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894361925] [2021-07-10 13:15:26,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 13:15:26,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:15:26,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 13:15:26,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-07-10 13:15:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:26,209 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:15:26,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:15:26,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:15:26,209 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:15:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:15:26,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:15:26,640 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:15:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:15:26,641 INFO L82 PathProgramCache]: Analyzing trace with hash -780238521, now seen corresponding path program 3 times [2021-07-10 13:15:26,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:15:26,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919919173] [2021-07-10 13:15:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:15:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:15:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:15:26,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:15:26,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919919173] [2021-07-10 13:15:26,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919919173] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:26,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205478520] [2021-07-10 13:15:26,714 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 13:15:26,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-10 13:15:26,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:15:26,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-10 13:15:26,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:15:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 13:15:26,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205478520] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:26,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:15:26,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-07-10 13:15:26,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194196296] [2021-07-10 13:15:26,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 13:15:26,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:15:26,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 13:15:26,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-07-10 13:15:26,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:26,950 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:15:26,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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 13:15:26,950 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:15:26,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:15:26,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:15:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:15:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-10 13:15:27,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:15:27,663 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:15:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:15:27,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2107771213, now seen corresponding path program 4 times [2021-07-10 13:15:27,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:15:27,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076761015] [2021-07-10 13:15:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:15:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:15:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:15:27,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:15:27,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076761015] [2021-07-10 13:15:27,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076761015] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:27,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583480234] [2021-07-10 13:15:27,770 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 13:15:27,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 13:15:27,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:15:27,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 13:15:27,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:15:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:15:28,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583480234] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:28,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:15:28,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2021-07-10 13:15:28,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820175912] [2021-07-10 13:15:28,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-10 13:15:28,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:15:28,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-10 13:15:28,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-07-10 13:15:28,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:28,003 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:15:28,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 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 13:15:28,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:15:28,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:15:28,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-07-10 13:15:28,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:15:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:15:28,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:15:28,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:15:28,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:15:28,559 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:15:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:15:28,559 INFO L82 PathProgramCache]: Analyzing trace with hash 65409385, now seen corresponding path program 5 times [2021-07-10 13:15:28,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:15:28,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585670490] [2021-07-10 13:15:28,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:15:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:15:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:15:28,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:15:28,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585670490] [2021-07-10 13:15:28,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585670490] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:28,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96664494] [2021-07-10 13:15:28,662 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 [2021-07-10 13:15:28,714 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-10 13:15:28,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:15:28,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2021-07-10 13:15:28,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:15:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 20 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-10 13:15:28,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96664494] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:15:28,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:15:28,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 21 [2021-07-10 13:15:28,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786678691] [2021-07-10 13:15:28,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-10 13:15:28,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:15:28,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-10 13:15:28,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-07-10 13:15:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:28,896 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:15:28,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 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 13:15:28,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:15:28,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:15:28,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:15:28,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:15:28,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:15:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:15:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:15:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-10 13:15:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:15:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-10 13:15:29,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:15:29,743 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:15:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:15:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1886045439, now seen corresponding path program 6 times [2021-07-10 13:15:29,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:15:29,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424070015] [2021-07-10 13:15:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:15:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:16:15,309 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 80 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown