/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-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 22:15:04,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 22:15:04,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 22:15:04,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 22:15:04,188 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 22:15:04,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 22:15:04,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 22:15:04,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 22:15:04,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 22:15:04,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 22:15:04,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 22:15:04,203 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 22:15:04,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 22:15:04,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 22:15:04,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 22:15:04,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 22:15:04,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 22:15:04,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 22:15:04,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 22:15:04,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 22:15:04,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 22:15:04,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 22:15:04,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 22:15:04,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 22:15:04,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 22:15:04,206 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-14 22:15:04,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 22:15:04,206 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 22:15:04,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 22:15:04,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 22:15:04,206 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-14 22:15:04,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 22:15:04,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 22:15:04,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 22:15:04,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 22:15:04,471 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 22:15:04,472 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 22:15:04,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array.wvr.bpl [2021-06-14 22:15:04,473 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array.wvr.bpl' [2021-06-14 22:15:04,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 22:15:04,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 22:15:04,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 22:15:04,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 22:15:04,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 22:15:04,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 22:15:04,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 22:15:04,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 22:15:04,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 22:15:04,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/1) ... [2021-06-14 22:15:04,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 22:15:04,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 22:15:04,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 22:15:04,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 22:15:04,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (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 22:15:04,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 22:15:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 22:15:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 22:15:04,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 22:15:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 22:15:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 22:15:04,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 22:15:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 22:15:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 22:15:04,608 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 22:15:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 22:15:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 22:15:04,609 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 22:15:04,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 22:15:04,760 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 22:15:04,761 INFO L202 PluginConnector]: Adding new model min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 10:15:04 BoogieIcfgContainer [2021-06-14 22:15:04,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 22:15:04,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 22:15:04,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 22:15:04,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 22:15:04,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 10:15:04" (1/2) ... [2021-06-14 22:15:04,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e52428 and model type min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 10:15:04, skipping insertion in model container [2021-06-14 22:15:04,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 10:15:04" (2/2) ... [2021-06-14 22:15:04,766 INFO L111 eAbstractionObserver]: Analyzing ICFG min-array.wvr.bpl [2021-06-14 22:15:04,771 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 22:15:04,771 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 22:15:04,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 22:15:04,771 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 22:15:04,803 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-14 22:15:04,817 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 22:15:04,923 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 22:15:04,923 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 22:15:04,923 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 22:15:04,923 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 22:15:04,923 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 22:15:04,923 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 22:15:04,923 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 22:15:04,923 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 22:15:05,040 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:15:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:15:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash -650399523, now seen corresponding path program 1 times [2021-06-14 22:15:05,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:15:05,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878974044] [2021-06-14 22:15:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:15:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:15:05,264 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 22:15:05,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:15:05,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878974044] [2021-06-14 22:15:05,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878974044] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:05,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797899727] [2021-06-14 22:15:05,266 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 22:15:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:15:05,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-14 22:15:05,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:15:05,526 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 22:15:05,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797899727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:05,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:15:05,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-14 22:15:05,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715009285] [2021-06-14 22:15:05,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 22:15:05,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:15:05,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 22:15:05,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-14 22:15:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:05,545 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:15:05,546 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 22:15:05,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:06,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-14 22:15:06,039 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:15:06,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:15:06,039 INFO L82 PathProgramCache]: Analyzing trace with hash 527007267, now seen corresponding path program 1 times [2021-06-14 22:15:06,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:15:06,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382269374] [2021-06-14 22:15:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:15:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:15:06,084 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 22:15:06,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:15:06,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382269374] [2021-06-14 22:15:06,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382269374] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 22:15:06,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 22:15:06,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-14 22:15:06,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995543173] [2021-06-14 22:15:06,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-14 22:15:06,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:15:06,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-14 22:15:06,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-14 22:15:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:06,086 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:15:06,086 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 22:15:06,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:06,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:06,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-14 22:15:06,148 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:15:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:15:06,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1449377417, now seen corresponding path program 2 times [2021-06-14 22:15:06,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:15:06,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392630066] [2021-06-14 22:15:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:15:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:15:06,291 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 22:15:06,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:15:06,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392630066] [2021-06-14 22:15:06,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392630066] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:06,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131030156] [2021-06-14 22:15:06,292 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 22:15:06,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 22:15:06,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:15:06,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-06-14 22:15:06,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:15:06,546 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 22:15:06,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131030156] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:06,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:15:06,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-14 22:15:06,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880719389] [2021-06-14 22:15:06,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-14 22:15:06,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:15:06,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-14 22:15:06,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-06-14 22:15:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:06,548 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:15:06,548 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 22:15:06,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:06,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:06,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:07,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:15:07,078 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:15:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:15:07,078 INFO L82 PathProgramCache]: Analyzing trace with hash 126115117, now seen corresponding path program 3 times [2021-06-14 22:15:07,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:15:07,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945596026] [2021-06-14 22:15:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:15:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:15:07,221 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 22:15:07,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:15:07,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945596026] [2021-06-14 22:15:07,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945596026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:07,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830225840] [2021-06-14 22:15:07,222 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 22:15:07,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-14 22:15:07,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:15:07,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-14 22:15:07,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:15:07,446 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 22:15:07,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830225840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:07,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:15:07,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2021-06-14 22:15:07,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298924622] [2021-06-14 22:15:07,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-14 22:15:07,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:15:07,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-14 22:15:07,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-06-14 22:15:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:07,448 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:15:07,448 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 22:15:07,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:07,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:07,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:07,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-14 22:15:08,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:15:08,271 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:15:08,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:15:08,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1599935215, now seen corresponding path program 4 times [2021-06-14 22:15:08,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:15:08,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989233124] [2021-06-14 22:15:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:15:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:15:08,371 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 22:15:08,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:15:08,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989233124] [2021-06-14 22:15:08,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989233124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:08,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811025821] [2021-06-14 22:15:08,371 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 22:15:08,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 22:15:08,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:15:08,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-14 22:15:08,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:15:08,637 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 22:15:08,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811025821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:08,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:15:08,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 25 [2021-06-14 22:15:08,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345108666] [2021-06-14 22:15:08,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-14 22:15:08,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:15:08,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-14 22:15:08,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2021-06-14 22:15:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:08,639 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:15:08,639 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 22:15:08,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:08,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:08,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:08,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2021-06-14 22:15:08,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:09,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:09,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:15:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:15:09,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:15:09,291 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:15:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:15:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash 493188375, now seen corresponding path program 5 times [2021-06-14 22:15:09,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:15:09,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392477432] [2021-06-14 22:15:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:15:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:15:09,379 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 22:15:09,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:15:09,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392477432] [2021-06-14 22:15:09,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392477432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:09,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100994276] [2021-06-14 22:15:09,380 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 22:15:09,422 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-14 22:15:09,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:15:09,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-14 22:15:09,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:15:09,743 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 22:15:09,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100994276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:09,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:15:09,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2021-06-14 22:15:09,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642835894] [2021-06-14 22:15:09,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-14 22:15:09,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:15:09,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-14 22:15:09,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2021-06-14 22:15:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:09,744 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:15:09,745 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 22:15:09,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:09,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:09,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:09,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:15:09,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:15:09,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:15:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:15:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-14 22:15:10,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:15:10,345 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:15:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:15:10,345 INFO L82 PathProgramCache]: Analyzing trace with hash -309624935, now seen corresponding path program 6 times [2021-06-14 22:15:10,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:15:10,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065514913] [2021-06-14 22:15:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:15:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 22:15:10,544 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 22:15:10,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 22:15:10,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065514913] [2021-06-14 22:15:10,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065514913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:10,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416384123] [2021-06-14 22:15:10,544 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 22:15:10,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-06-14 22:15:10,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 22:15:10,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-14 22:15:10,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 22:15:10,916 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 22:15:10,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416384123] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 22:15:10,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 22:15:10,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 33 [2021-06-14 22:15:10,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325883299] [2021-06-14 22:15:10,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-14 22:15:10,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 22:15:10,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-14 22:15:10,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=829, Unknown=0, NotChecked=0, Total=1056 [2021-06-14 22:15:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:10,923 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 22:15:10,923 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 22:15:10,923 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:10,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:10,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:10,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2021-06-14 22:15:10,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:15:10,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2021-06-14 22:15:10,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 22:15:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-14 22:15:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 22:15:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-14 22:15:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-14 22:15:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-14 22:15:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-14 22:15:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-14 22:15:12,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 22:15:12,357 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 22:15:12,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 22:15:12,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1832403839, now seen corresponding path program 7 times [2021-06-14 22:15:12,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 22:15:12,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149379093] [2021-06-14 22:15:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 22:15:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown