/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 18:33:37,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 18:33:37,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 18:33:37,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 18:33:37,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 18:33:37,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 18:33:37,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 18:33:37,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 18:33:37,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 18:33:37,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 18:33:37,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 18:33:37,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 18:33:37,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 18:33:37,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 18:33:37,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 18:33:37,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 18:33:37,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 18:33:37,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-07-14 18:33:37,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 18:33:37,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 18:33:37,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 18:33:37,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 18:33:37,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 18:33:37,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 18:33:37,137 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 18:33:37,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 18:33:37,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 18:33:37,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 18:33:37,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 18:33:37,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 18:33:37,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 18:33:37,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 18:33:37,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 18:33:37,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 18:33:37,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 18:33:37,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 18:33:37,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 18:33:37,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 18:33:37,139 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 18:33:37,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 18:33:37,140 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 18:33:37,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 18:33:37,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 18:33:37,140 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 18:33:37,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 18:33:37,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 18:33:37,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 18:33:37,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 18:33:37,418 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 18:33:37,419 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 18:33:37,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-2.wvr.bpl [2021-07-14 18:33:37,420 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-2.wvr.bpl' [2021-07-14 18:33:37,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 18:33:37,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 18:33:37,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 18:33:37,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 18:33:37,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 18:33:37,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 18:33:37,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 18:33:37,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 18:33:37,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 18:33:37,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... [2021-07-14 18:33:37,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 18:33:37,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 18:33:37,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 18:33:37,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 18:33:37,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 18:33:37,566 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 18:33:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 18:33:37,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 18:33:37,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 18:33:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 18:33:37,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 18:33:37,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 18:33:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 18:33:37,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 18:33:37,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 18:33:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 18:33:37,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 18:33:37,568 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-14 18:33:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-14 18:33:37,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-14 18:33:37,569 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-14 18:33:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-14 18:33:37,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-14 18:33:37,576 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 18:33:37,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 18:33:37,801 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 18:33:37,802 INFO L202 PluginConnector]: Adding new model min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:33:37 BoogieIcfgContainer [2021-07-14 18:33:37,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 18:33:37,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 18:33:37,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 18:33:37,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 18:33:37,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:33:37" (1/2) ... [2021-07-14 18:33:37,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1045ae9a and model type min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:33:37, skipping insertion in model container [2021-07-14 18:33:37,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:33:37" (2/2) ... [2021-07-14 18:33:37,807 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-2.wvr.bpl [2021-07-14 18:33:37,827 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 18:33:37,828 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 18:33:37,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 18:33:37,828 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 18:33:37,893 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-07-14 18:33:37,922 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 18:33:37,964 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 18:33:37,964 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 18:33:37,964 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 18:33:37,964 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 18:33:37,965 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 18:33:37,965 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 18:33:37,965 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 18:33:37,965 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 18:33:38,234 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 18:33:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:38,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1456240680, now seen corresponding path program 1 times [2021-07-14 18:33:38,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:38,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131018801] [2021-07-14 18:33:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 42 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-14 18:33:38,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:38,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131018801] [2021-07-14 18:33:38,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131018801] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:38,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518036746] [2021-07-14 18:33:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:38,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 18:33:38,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-07-14 18:33:38,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518036746] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:38,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:33:38,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2021-07-14 18:33:38,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074203738] [2021-07-14 18:33:38,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 18:33:38,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:33:38,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 18:33:38,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-07-14 18:33:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:38,765 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:33:38,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:33:38,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 18:33:39,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 18:33:39,277 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 18:33:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1851271086, now seen corresponding path program 2 times [2021-07-14 18:33:39,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:39,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779758514] [2021-07-14 18:33:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 64 proven. 18 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-07-14 18:33:39,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:39,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779758514] [2021-07-14 18:33:39,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779758514] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:39,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703879250] [2021-07-14 18:33:39,356 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 [2021-07-14 18:33:39,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 18:33:39,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:33:39,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 18:33:39,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 62 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-07-14 18:33:39,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703879250] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:39,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:33:39,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-07-14 18:33:39,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584326028] [2021-07-14 18:33:39,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 18:33:39,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:33:39,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 18:33:39,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-07-14 18:33:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:39,521 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:33:39,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:33:39,521 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 18:33:39,521 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:39,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 18:33:39,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 18:33:39,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:39,918 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 18:33:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:39,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1538278701, now seen corresponding path program 3 times [2021-07-14 18:33:39,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:39,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175281762] [2021-07-14 18:33:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-14 18:33:40,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:40,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175281762] [2021-07-14 18:33:40,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175281762] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:40,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241862875] [2021-07-14 18:33:40,132 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 [2021-07-14 18:33:40,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-14 18:33:40,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:33:40,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 18:33:40,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:40,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-14 18:33:40,264 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 18:33:40,265 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 18:33:40,265 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 18:33:40,265 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-07-14 18:33:40,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-14 18:33:40,299 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 18:33:40,303 INFO L628 ElimStorePlain]: treesize reduction 12, result has 20.0 percent of original size [2021-07-14 18:33:40,303 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2021-07-14 18:33:40,303 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 18:33:40,303 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:21, output treesize:3 [2021-07-14 18:33:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-14 18:33:40,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241862875] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:40,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:33:40,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-07-14 18:33:40,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630328764] [2021-07-14 18:33:40,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 18:33:40,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:33:40,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 18:33:40,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-07-14 18:33:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:40,342 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:33:40,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:33:40,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 18:33:40,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 18:33:40,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:46,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-14 18:33:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-14 18:33:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 18:33:47,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:33:47,080 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 18:33:47,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:33:47,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1659312368, now seen corresponding path program 4 times [2021-07-14 18:33:47,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:33:47,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954853495] [2021-07-14 18:33:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:33:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:33:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 216 proven. 313 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-14 18:33:48,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:33:48,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954853495] [2021-07-14 18:33:48,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954853495] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:48,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143763109] [2021-07-14 18:33:48,162 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 [2021-07-14 18:33:48,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 18:33:48,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:33:48,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-14 18:33:48,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:33:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 172 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-07-14 18:33:48,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143763109] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:33:48,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:33:48,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 5] total 45 [2021-07-14 18:33:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322555438] [2021-07-14 18:33:48,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-07-14 18:33:48,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:33:48,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-07-14 18:33:48,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1670, Unknown=0, NotChecked=0, Total=2070 [2021-07-14 18:33:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:33:48,611 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:33:48,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 3.9565217391304346) internal successors, (182), 45 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:33:48,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-07-14 18:33:48,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-07-14 18:33:48,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 18:33:48,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:34:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-14 18:34:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-14 18:34:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 18:34:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-14 18:34:01,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:34:01,242 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 18:34:01,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:34:01,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1143141402, now seen corresponding path program 5 times [2021-07-14 18:34:01,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:34:01,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243015818] [2021-07-14 18:34:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:34:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:34:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 51 proven. 113 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-07-14 18:34:01,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:34:01,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243015818] [2021-07-14 18:34:01,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243015818] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:34:01,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563604022] [2021-07-14 18:34:01,315 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 [2021-07-14 18:34:01,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-14 18:34:01,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:34:01,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-14 18:34:01,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:34:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 51 proven. 103 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-07-14 18:34:01,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563604022] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:34:01,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:34:01,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2021-07-14 18:34:01,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896553541] [2021-07-14 18:34:01,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 18:34:01,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:34:01,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 18:34:01,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-07-14 18:34:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:34:01,540 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:34:01,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:34:01,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-07-14 18:34:01,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-07-14 18:34:01,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 18:34:01,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-07-14 18:34:01,540 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:34:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-07-14 18:34:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-14 18:34:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 18:34:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-14 18:34:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 18:34:32,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 18:34:32,593 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-14 18:34:32,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 18:34:32,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1593133412, now seen corresponding path program 6 times [2021-07-14 18:34:32,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 18:34:32,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438968965] [2021-07-14 18:34:32,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 18:34:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 18:34:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 23 proven. 96 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-07-14 18:34:32,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 18:34:32,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438968965] [2021-07-14 18:34:32,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438968965] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:34:32,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522548041] [2021-07-14 18:34:32,689 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 [2021-07-14 18:34:32,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-14 18:34:32,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 18:34:32,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 18:34:32,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 18:34:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 30 proven. 85 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-07-14 18:34:32,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522548041] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 18:34:32,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 18:34:32,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-07-14 18:34:32,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54735033] [2021-07-14 18:34:32,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 18:34:32,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 18:34:32,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 18:34:32,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-07-14 18:34:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 18:34:32,915 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 18:34:32,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 18:34:32,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-07-14 18:34:32,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2021-07-14 18:34:32,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 18:34:32,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2021-07-14 18:34:32,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 18:34:32,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.