/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/min-fun-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 22:16:10,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 22:16:10,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 22:16:10,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 22:16:10,912 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 22:16:10,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 22:16:10,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 22:16:10,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 22:16:10,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 22:16:10,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 22:16:10,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 22:16:10,971 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 22:16:10,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 22:16:10,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 22:16:10,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 22:16:10,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 22:16:10,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 22:16:10,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 22:16:10,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 22:16:10,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 22:16:10,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 22:16:10,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 22:16:10,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 22:16:10,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 22:16:10,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 22:16:10,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 22:16:10,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 22:16:10,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 22:16:10,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 22:16:10,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 22:16:10,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 22:16:10,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 22:16:10,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 22:16:10,975 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-14 22:16:10,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 22:16:10,975 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 22:16:10,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 22:16:10,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 22:16:10,976 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-14 22:16:10,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 22:16:11,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 22:16:11,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 22:16:11,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 22:16:11,285 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 22:16:11,286 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 22:16:11,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun-alt.wvr.bpl [2021-06-14 22:16:11,287 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun-alt.wvr.bpl' [2021-06-14 22:16:11,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 22:16:11,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 22:16:11,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 22:16:11,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 22:16:11,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 22:16:11,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 22:16:11,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 22:16:11,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 22:16:11,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 22:16:11,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/1) ... [2021-06-14 22:16:11,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 22:16:11,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 22:16:11,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 22:16:11,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 22:16:11,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (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 [2021-06-14 22:16:11,510 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 22:16:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 22:16:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 22:16:11,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 22:16:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 22:16:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 22:16:11,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 22:16:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 22:16:11,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 22:16:11,513 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 22:16:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 22:16:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 22:16:11,514 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 22:16:11,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 22:16:11,684 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 22:16:11,685 INFO L202 PluginConnector]: Adding new model min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 10:16:11 BoogieIcfgContainer [2021-06-14 22:16:11,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 22:16:11,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 22:16:11,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 22:16:11,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 22:16:11,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:16:11" (1/2) ... [2021-06-14 22:16:11,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9040e and model type min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 10:16:11, skipping insertion in model container [2021-06-14 22:16:11,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 10:16:11" (2/2) ... [2021-06-14 22:16:11,692 INFO L111 eAbstractionObserver]: Analyzing ICFG min-fun-alt.wvr.bpl [2021-06-14 22:16:11,696 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 22:16:11,696 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 22:16:11,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 22:16:11,697 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 22:16:11,728 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-14 22:16:11,746 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 22:16:11,789 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 22:16:11,790 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 22:16:11,790 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 22:16:11,790 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 22:16:11,790 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 22:16:11,790 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 22:16:11,790 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 22:16:11,790 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 22:16:11,946 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:16:11,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:16:11,957 INFO L82 PathProgramCache]: Analyzing trace with hash -650399523, now seen corresponding path program 1 times [2021-06-14 22:16:11,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:16:11,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538566930] [2021-06-14 22:16:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:16:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:16:12,272 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 22:16:12,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:16:12,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538566930] [2021-06-14 22:16:12,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538566930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:12,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522378467] [2021-06-14 22:16:12,275 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 22:16:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:16:12,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-14 22:16:12,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:16:12,593 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 22:16:12,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522378467] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:12,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:16:12,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-14 22:16:12,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940972609] [2021-06-14 22:16:12,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 22:16:12,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:16:12,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 22:16:12,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-14 22:16:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:12,611 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:16:12,612 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 22:16:12,612 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:13,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-14 22:16:13,129 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:16:13,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:16:13,129 INFO L82 PathProgramCache]: Analyzing trace with hash 527007267, now seen corresponding path program 1 times [2021-06-14 22:16:13,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:16:13,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158945817] [2021-06-14 22:16:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:16:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:16:13,212 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 22:16:13,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:16:13,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158945817] [2021-06-14 22:16:13,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158945817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 22:16:13,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 22:16:13,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-14 22:16:13,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494764094] [2021-06-14 22:16:13,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-14 22:16:13,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:16:13,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-14 22:16:13,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-14 22:16:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:13,216 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:16:13,216 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 22:16:13,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:13,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:13,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-14 22:16:13,254 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:16:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:16:13,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1449377417, now seen corresponding path program 2 times [2021-06-14 22:16:13,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:16:13,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33062163] [2021-06-14 22:16:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:16:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:16:13,347 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 22:16:13,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:16:13,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33062163] [2021-06-14 22:16:13,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33062163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:13,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291019159] [2021-06-14 22:16:13,348 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 22:16:13,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 22:16:13,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:16:13,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-14 22:16:13,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:16:13,670 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 22:16:13,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291019159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:13,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:16:13,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-14 22:16:13,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163690623] [2021-06-14 22:16:13,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-14 22:16:13,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:16:13,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-14 22:16:13,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-06-14 22:16:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:13,676 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:16:13,676 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 22:16:13,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:13,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:13,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:14,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:16:14,257 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:16:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:16:14,257 INFO L82 PathProgramCache]: Analyzing trace with hash 126115117, now seen corresponding path program 3 times [2021-06-14 22:16:14,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:16:14,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700609144] [2021-06-14 22:16:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:16:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:16:14,374 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 22:16:14,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:16:14,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700609144] [2021-06-14 22:16:14,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700609144] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:14,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757357328] [2021-06-14 22:16:14,376 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 22:16:14,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-14 22:16:14,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:16:14,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-14 22:16:14,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:16:14,588 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 22:16:14,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757357328] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:14,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:16:14,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2021-06-14 22:16:14,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445289578] [2021-06-14 22:16:14,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-14 22:16:14,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:16:14,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-14 22:16:14,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-14 22:16:14,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:14,590 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:16:14,590 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 22:16:14,590 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:14,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:14,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:14,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-14 22:16:15,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:16:15,572 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:16:15,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:16:15,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1599935215, now seen corresponding path program 4 times [2021-06-14 22:16:15,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:16:15,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968084327] [2021-06-14 22:16:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:16:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:16:15,712 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 22:16:15,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:16:15,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968084327] [2021-06-14 22:16:15,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968084327] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:15,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085352842] [2021-06-14 22:16:15,713 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 22:16:15,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 22:16:15,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:16:15,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-14 22:16:15,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:16:16,072 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 22:16:16,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085352842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:16,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:16:16,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 25 [2021-06-14 22:16:16,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343245871] [2021-06-14 22:16:16,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-14 22:16:16,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:16:16,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-14 22:16:16,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2021-06-14 22:16:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:16,074 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:16:16,074 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 22:16:16,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:16,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:16,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:16,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-14 22:16:16,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:16:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:16:16,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:16:16,833 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:16:16,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:16:16,833 INFO L82 PathProgramCache]: Analyzing trace with hash 493188375, now seen corresponding path program 5 times [2021-06-14 22:16:16,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:16:16,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608160539] [2021-06-14 22:16:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:16:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:16:16,973 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 22:16:16,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:16:16,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608160539] [2021-06-14 22:16:16,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608160539] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:16,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166278962] [2021-06-14 22:16:16,974 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 22:16:17,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-14 22:16:17,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:16:17,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-14 22:16:17,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:16:17,371 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 22:16:17,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166278962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:17,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:16:17,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2021-06-14 22:16:17,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998756628] [2021-06-14 22:16:17,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-14 22:16:17,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:16:17,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-14 22:16:17,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2021-06-14 22:16:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:17,376 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:16:17,376 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 22:16:17,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:17,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:17,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:17,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:16:17,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:16:17,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:16:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:16:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-14 22:16:18,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:16:18,129 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:16:18,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:16:18,129 INFO L82 PathProgramCache]: Analyzing trace with hash -309624935, now seen corresponding path program 6 times [2021-06-14 22:16:18,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:16:18,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658626276] [2021-06-14 22:16:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:16:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:16:18,333 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 22:16:18,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:16:18,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658626276] [2021-06-14 22:16:18,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658626276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:18,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946694806] [2021-06-14 22:16:18,334 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 22:16:18,383 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-14 22:16:18,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:16:18,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-14 22:16:18,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:16:18,774 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 22:16:18,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946694806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:16:18,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:16:18,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 33 [2021-06-14 22:16:18,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451611081] [2021-06-14 22:16:18,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-14 22:16:18,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:16:18,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-14 22:16:18,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=829, Unknown=0, NotChecked=0, Total=1056 [2021-06-14 22:16:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:18,777 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:16:18,777 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 22:16:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:16:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:16:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-14 22:16:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:16:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:16:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:16:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:16:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-14 22:16:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:16:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-14 22:16:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-14 22:16:19,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:16:19,937 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:16:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:16:19,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1832403839, now seen corresponding path program 7 times [2021-06-14 22:16:19,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:16:19,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84270857] [2021-06-14 22:16:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:16:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown