/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/sorted.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 13:23:02,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 13:23:02,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 13:23:02,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 13:23:02,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-07-10 13:23:02,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 13:23:02,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 13:23:02,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 13:23:02,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 13:23:02,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 13:23:02,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 13:23:02,264 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 13:23:02,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 13:23:02,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 13:23:02,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 13:23:02,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 13:23:02,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 13:23:02,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 13:23:02,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 13:23:02,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 13:23:02,265 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 13:23:02,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 13:23:02,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 13:23:02,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 13:23:02,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 13:23:02,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 13:23:02,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 13:23:02,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 13:23:02,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 13:23:02,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 13:23:02,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 13:23:02,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 13:23:02,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 13:23:02,275 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 13:23:02,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 13:23:02,276 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 13:23:02,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 13:23:02,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 13:23:02,276 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 13:23:02,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 13:23:02,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 13:23:02,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 13:23:02,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 13:23:02,530 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 13:23:02,530 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 13:23:02,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sorted.wvr.bpl [2021-07-10 13:23:02,531 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sorted.wvr.bpl' [2021-07-10 13:23:02,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 13:23:02,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 13:23:02,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 13:23:02,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 13:23:02,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 13:23:02,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 13:23:02,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 13:23:02,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 13:23:02,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 13:23:02,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... [2021-07-10 13:23:02,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 13:23:02,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 13:23:02,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 13:23:02,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 13:23:02,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 13:23:02,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 13:23:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 13:23:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 13:23:02,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 13:23:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 13:23:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 13:23:02,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 13:23:02,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 13:23:02,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 13:23:02,631 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 13:23:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 13:23:02,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 13:23:02,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 13:23:02,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 13:23:02,774 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 13:23:02,776 INFO L202 PluginConnector]: Adding new model sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 01:23:02 BoogieIcfgContainer [2021-07-10 13:23:02,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 13:23:02,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 13:23:02,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 13:23:02,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 13:23:02,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 01:23:02" (1/2) ... [2021-07-10 13:23:02,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20abc709 and model type sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 01:23:02, skipping insertion in model container [2021-07-10 13:23:02,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sorted.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 01:23:02" (2/2) ... [2021-07-10 13:23:02,782 INFO L111 eAbstractionObserver]: Analyzing ICFG sorted.wvr.bpl [2021-07-10 13:23:02,785 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 13:23:02,786 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 13:23:02,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 13:23:02,786 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 13:23:02,825 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 13:23:02,840 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-10 13:23:02,895 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 13:23:02,896 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 13:23:02,896 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 13:23:02,896 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 13:23:02,896 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 13:23:02,896 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 13:23:02,896 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 13:23:02,896 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 13:23:02,953 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:23:02,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:23:02,957 INFO L82 PathProgramCache]: Analyzing trace with hash -318664644, now seen corresponding path program 1 times [2021-07-10 13:23:02,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:23:02,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117519317] [2021-07-10 13:23:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:23:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 13:23:03,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:23:03,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117519317] [2021-07-10 13:23:03,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117519317] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:03,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640010648] [2021-07-10 13:23:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:03,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-10 13:23:03,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:23:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 13:23:03,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640010648] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:03,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:23:03,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 13:23:03,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894524583] [2021-07-10 13:23:03,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 13:23:03,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:23:03,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 13:23:03,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-10 13:23:03,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:03,448 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:23:03,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:23:03,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:23:03,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-10 13:23:03,871 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:23:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:23:03,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2115106376, now seen corresponding path program 2 times [2021-07-10 13:23:03,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:23:03,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305978487] [2021-07-10 13:23:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:23:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:23:03,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:23:03,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305978487] [2021-07-10 13:23:03,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305978487] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:03,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499237086] [2021-07-10 13:23:03,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:04,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 13:23:04,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:23:04,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 13:23:04,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:23:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:23:04,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499237086] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:04,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:23:04,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-07-10 13:23:04,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578090849] [2021-07-10 13:23:04,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 13:23:04,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:23:04,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 13:23:04,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-07-10 13:23:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:04,112 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:23:04,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:23:04,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:23:04,112 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:23:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:04,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:04,591 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:23:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:23:04,592 INFO L82 PathProgramCache]: Analyzing trace with hash -777581274, now seen corresponding path program 3 times [2021-07-10 13:23:04,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:23:04,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824253716] [2021-07-10 13:23:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:23:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 13:23:04,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:23:04,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824253716] [2021-07-10 13:23:04,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824253716] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:04,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058538801] [2021-07-10 13:23:04,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:04,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-10 13:23:04,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:23:04,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 13:23:04,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:23:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:23:04,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058538801] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:04,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:23:04,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-07-10 13:23:04,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940429625] [2021-07-10 13:23:04,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-10 13:23:04,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:23:04,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-10 13:23:04,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-07-10 13:23:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:04,939 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:23:04,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:23:04,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-10 13:23:04,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:04,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-10 13:23:05,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:05,491 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:23:05,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:23:05,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1865494060, now seen corresponding path program 4 times [2021-07-10 13:23:05,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:23:05,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015371248] [2021-07-10 13:23:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:23:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:23:05,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:23:05,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015371248] [2021-07-10 13:23:05,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015371248] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:05,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759548242] [2021-07-10 13:23:05,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:05,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 13:23:05,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:23:05,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 13:23:05,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:23:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:23:05,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759548242] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:05,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:23:05,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2021-07-10 13:23:05,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634265846] [2021-07-10 13:23:05,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-10 13:23:05,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:23:05,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-10 13:23:05,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-07-10 13:23:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:05,866 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:23:05,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:23:05,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:05,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:05,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-10 13:23:05,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:06,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:06,509 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:23:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:23:06,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1794401766, now seen corresponding path program 5 times [2021-07-10 13:23:06,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:23:06,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853271610] [2021-07-10 13:23:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:23:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:07,750 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-07-10 13:23:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 13:23:08,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:23:08,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853271610] [2021-07-10 13:23:08,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853271610] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:08,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061575578] [2021-07-10 13:23:08,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:08,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-10 13:23:08,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:23:08,645 WARN L261 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 65 conjunts are in the unsatisfiable core [2021-07-10 13:23:08,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:23:10,928 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 196 [2021-07-10 13:23:11,056 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 207 [2021-07-10 13:23:15,181 WARN L205 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 207 DAG size of output: 102 [2021-07-10 13:23:19,727 WARN L205 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 560 DAG size of output: 551 [2021-07-10 13:23:23,926 WARN L205 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 558 DAG size of output: 535 [2021-07-10 13:23:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 13:23:24,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061575578] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:24,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:23:24,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 53 [2021-07-10 13:23:24,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83994014] [2021-07-10 13:23:24,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-07-10 13:23:24,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:23:24,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-07-10 13:23:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2491, Unknown=0, NotChecked=0, Total=2756 [2021-07-10 13:23:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:24,266 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:23:24,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.0) internal successors, (106), 53 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:23:24,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:24,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:24,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:24,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:24,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:26,271 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2021-07-10 13:23:26,825 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 72 [2021-07-10 13:23:27,598 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 63 [2021-07-10 13:23:27,993 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 69 [2021-07-10 13:23:28,437 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-10 13:23:28,666 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2021-07-10 13:23:28,909 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 80 [2021-07-10 13:23:29,190 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 76 [2021-07-10 13:23:29,422 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-07-10 13:23:29,655 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 78 [2021-07-10 13:23:30,022 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2021-07-10 13:23:30,215 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-07-10 13:23:30,579 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2021-07-10 13:23:30,816 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2021-07-10 13:23:31,047 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-07-10 13:23:31,228 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2021-07-10 13:23:31,479 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 89 [2021-07-10 13:23:31,718 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2021-07-10 13:23:32,114 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2021-07-10 13:23:32,401 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2021-07-10 13:23:32,683 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2021-07-10 13:23:32,949 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 91 [2021-07-10 13:23:33,172 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 44 [2021-07-10 13:23:33,461 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 84 [2021-07-10 13:23:33,719 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 84 [2021-07-10 13:23:33,929 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2021-07-10 13:23:34,280 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-10 13:23:34,593 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-07-10 13:23:34,939 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-07-10 13:23:35,270 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 80 [2021-07-10 13:23:35,603 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2021-07-10 13:23:35,804 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2021-07-10 13:23:36,085 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2021-07-10 13:23:36,357 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2021-07-10 13:23:36,651 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 96 [2021-07-10 13:23:36,828 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-07-10 13:23:37,208 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 100 [2021-07-10 13:23:37,527 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 92 [2021-07-10 13:23:37,719 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-07-10 13:23:37,966 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-10 13:23:38,250 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 77 [2021-07-10 13:23:38,563 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 66 [2021-07-10 13:23:38,839 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2021-07-10 13:23:39,158 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 103 [2021-07-10 13:23:39,669 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2021-07-10 13:23:39,930 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2021-07-10 13:23:40,233 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 86 [2021-07-10 13:23:40,658 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 95 [2021-07-10 13:23:40,837 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2021-07-10 13:23:41,221 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-07-10 13:23:41,398 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-07-10 13:23:41,708 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2021-07-10 13:23:41,966 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2021-07-10 13:23:42,310 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2021-07-10 13:23:42,584 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2021-07-10 13:23:42,983 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-07-10 13:23:43,157 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2021-07-10 13:23:43,642 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2021-07-10 13:23:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-07-10 13:23:43,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:43,873 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:23:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:23:43,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1377285572, now seen corresponding path program 6 times [2021-07-10 13:23:43,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:23:43,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667040154] [2021-07-10 13:23:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:23:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 79 proven. 139 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 13:23:43,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:23:43,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667040154] [2021-07-10 13:23:43,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667040154] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:43,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144732656] [2021-07-10 13:23:43,999 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 [2021-07-10 13:23:44,048 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-07-10 13:23:44,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:23:44,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjunts are in the unsatisfiable core [2021-07-10 13:23:44,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:23:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 83 proven. 134 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 13:23:44,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144732656] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:44,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:23:44,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 32 [2021-07-10 13:23:44,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872482060] [2021-07-10 13:23:44,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-07-10 13:23:44,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:23:44,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-07-10 13:23:44,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2021-07-10 13:23:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:44,425 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:23:44,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:23:44,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:44,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:44,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:44,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:44,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 115 states. [2021-07-10 13:23:44,425 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:45,272 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-07-10 13:23:45,466 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2021-07-10 13:23:45,770 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-07-10 13:23:45,941 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2021-07-10 13:23:46,209 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2021-07-10 13:23:46,470 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2021-07-10 13:23:46,766 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-10 13:23:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-07-10 13:23:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-10 13:23:47,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:47,307 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:23:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:23:47,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1680947664, now seen corresponding path program 7 times [2021-07-10 13:23:47,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:23:47,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603677040] [2021-07-10 13:23:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:23:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 65 proven. 386 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-07-10 13:23:47,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:23:47,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603677040] [2021-07-10 13:23:47,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603677040] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:47,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082905057] [2021-07-10 13:23:47,480 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:47,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 39 conjunts are in the unsatisfiable core [2021-07-10 13:23:47,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:23:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 66 proven. 384 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-07-10 13:23:47,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082905057] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:47,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 13:23:47,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26] total 36 [2021-07-10 13:23:47,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230683050] [2021-07-10 13:23:47,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-10 13:23:47,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 13:23:47,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-10 13:23:47,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=977, Unknown=0, NotChecked=0, Total=1260 [2021-07-10 13:23:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:47,891 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 13:23:47,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 3.611111111111111) internal successors, (130), 36 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 13:23:47,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:47,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:47,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:47,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:47,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2021-07-10 13:23:47,891 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2021-07-10 13:23:47,892 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 13:23:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-10 13:23:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-10 13:23:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-10 13:23:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-07-10 13:23:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-10 13:23:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-10 13:23:48,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-07-10 13:23:48,677 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 13:23:48,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 13:23:48,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1624999382, now seen corresponding path program 8 times [2021-07-10 13:23:48,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 13:23:48,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976444042] [2021-07-10 13:23:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 13:23:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 13:23:50,608 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2021-07-10 13:23:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 97 proven. 448 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 13:23:53,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 13:23:53,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976444042] [2021-07-10 13:23:53,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976444042] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 13:23:53,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987992083] [2021-07-10 13:23:53,062 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:23:53,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 13:23:53,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 13:23:53,151 WARN L261 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 124 conjunts are in the unsatisfiable core [2021-07-10 13:23:53,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 13:23:56,172 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-07-10 13:23:56,443 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-07-10 13:23:56,718 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-07-10 13:23:56,983 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-07-10 13:23:57,280 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-07-10 13:23:57,529 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-07-10 13:23:57,766 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-07-10 13:23:57,983 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-07-10 13:23:58,245 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-07-10 13:23:58,535 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-07-10 13:23:58,822 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-07-10 13:23:59,174 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-07-10 13:23:59,494 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-07-10 13:23:59,843 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-07-10 13:24:05,496 WARN L205 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 1223 DAG size of output: 1000 [2021-07-10 13:24:09,929 WARN L205 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 1023 DAG size of output: 1023 [2021-07-10 13:24:14,475 WARN L205 SmtUtils]: Spent 4.54 s on a formula simplification. DAG size of input: 1023 DAG size of output: 1023 [2021-07-10 13:24:16,758 WARN L205 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 1023 [2021-07-10 13:25:32,448 WARN L205 SmtUtils]: Spent 1.24 m on a formula simplification. DAG size of input: 1023 DAG size of output: 254 [2021-07-10 13:25:36,061 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 268 [2021-07-10 13:25:36,641 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 365 [2021-07-10 13:25:36,853 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 270 [2021-07-10 13:25:36,982 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 270 [2021-07-10 13:26:37,776 WARN L205 SmtUtils]: Spent 59.25 s on a formula simplification. DAG size of input: 1604 DAG size of output: 1487 [2021-07-10 13:26:39,349 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 1501 DAG size of output: 1501 [2021-07-10 13:26:39,456 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 1498 DAG size of output: 1498 [2021-07-10 13:26:39,967 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 1605 DAG size of output: 1604 [2021-07-10 13:27:46,035 WARN L205 SmtUtils]: Spent 1.07 m on a formula simplification. DAG size of input: 1498 DAG size of output: 1481 [2021-07-10 13:27:46,856 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 1495 DAG size of output: 1495 [2021-07-10 13:27:46,963 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 1492 DAG size of output: 1492 [2021-07-10 13:27:47,476 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 1599 DAG size of output: 1598 [2021-07-10 13:27:53,564 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-07-10 13:27:53,565 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-07-10 13:27:53,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 13:27:53,766 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:173) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:597) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:238) ... 53 more [2021-07-10 13:27:53,771 INFO L168 Benchmark]: Toolchain (without parser) took 291220.58 ms. Allocated memory was 183.5 MB in the beginning and 659.6 MB in the end (delta: 476.1 MB). Free memory was 164.3 MB in the beginning and 413.9 MB in the end (delta: -249.6 MB). Peak memory consumption was 413.4 MB. Max. memory is 8.0 GB. [2021-07-10 13:27:53,771 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory is still 165.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-10 13:27:53,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.11 ms. Allocated memory is still 183.5 MB. Free memory was 164.2 MB in the beginning and 162.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-10 13:27:53,771 INFO L168 Benchmark]: Boogie Preprocessor took 10.73 ms. Allocated memory is still 183.5 MB. Free memory was 162.7 MB in the beginning and 161.8 MB in the end (delta: 916.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-10 13:27:53,772 INFO L168 Benchmark]: RCFGBuilder took 193.62 ms. Allocated memory is still 183.5 MB. Free memory was 161.7 MB in the beginning and 148.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-10 13:27:53,772 INFO L168 Benchmark]: TraceAbstraction took 290993.30 ms. Allocated memory was 183.5 MB in the beginning and 659.6 MB in the end (delta: 476.1 MB). Free memory was 147.7 MB in the beginning and 413.9 MB in the end (delta: -266.2 MB). Peak memory consumption was 397.6 MB. Max. memory is 8.0 GB. [2021-07-10 13:27:53,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory is still 165.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.11 ms. Allocated memory is still 183.5 MB. Free memory was 164.2 MB in the beginning and 162.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.73 ms. Allocated memory is still 183.5 MB. Free memory was 162.7 MB in the beginning and 161.8 MB in the end (delta: 916.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 193.62 ms. Allocated memory is still 183.5 MB. Free memory was 161.7 MB in the beginning and 148.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 290993.30 ms. Allocated memory was 183.5 MB in the beginning and 659.6 MB in the end (delta: 476.1 MB). Free memory was 147.7 MB in the beginning and 413.9 MB in the end (delta: -266.2 MB). Peak memory consumption was 397.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...