/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/buffer-series-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 21:57:14,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 21:57:14,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 21:57:14,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 21:57:14,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-14 21:57:14,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-14 21:57:14,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-14 21:57:14,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-14 21:57:14,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-14 21:57:14,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-14 21:57:14,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-14 21:57:14,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-14 21:57:14,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-14 21:57:14,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-14 21:57:14,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-14 21:57:14,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-14 21:57:14,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-14 21:57:14,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-14 21:57:14,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-14 21:57:14,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-14 21:57:14,098 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 21:57:14,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 21:57:14,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 21:57:14,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 21:57:14,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 21:57:14,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 21:57:14,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 21:57:14,137 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 21:57:14,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 21:57:14,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 21:57:14,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 21:57:14,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 21:57:14,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 21:57:14,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 21:57:14,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 21:57:14,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 21:57:14,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 21:57:14,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 21:57:14,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 21:57:14,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 21:57:14,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 21:57:14,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 21:57:14,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 21:57:14,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 21:57:14,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 21:57:14,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 21:57:14,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 21:57:14,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 21:57:14,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 21:57:14,141 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-14 21:57:14,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 21:57:14,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 21:57:14,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 21:57:14,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 21:57:14,142 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-14 21:57:14,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 21:57:14,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 21:57:14,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 21:57:14,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 21:57:14,433 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 21:57:14,434 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 21:57:14,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series-array.wvr.bpl [2021-06-14 21:57:14,435 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series-array.wvr.bpl' [2021-06-14 21:57:14,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 21:57:14,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 21:57:14,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 21:57:14,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 21:57:14,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 21:57:14,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 21:57:14,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 21:57:14,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 21:57:14,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 21:57:14,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/1) ... [2021-06-14 21:57:14,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 21:57:14,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 21:57:14,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 21:57:14,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 21:57:14,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (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 21:57:14,574 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 21:57:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 21:57:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 21:57:14,575 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 21:57:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 21:57:14,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 21:57:14,575 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 21:57:14,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 21:57:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 21:57:14,577 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 21:57:14,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 21:57:14,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 21:57:14,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-14 21:57:14,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-14 21:57:14,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-14 21:57:14,579 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 21:57:14,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 21:57:14,857 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 21:57:14,858 INFO L202 PluginConnector]: Adding new model buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 09:57:14 BoogieIcfgContainer [2021-06-14 21:57:14,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 21:57:14,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 21:57:14,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 21:57:14,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 21:57:14,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:57:14" (1/2) ... [2021-06-14 21:57:14,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a86af03 and model type buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 09:57:14, skipping insertion in model container [2021-06-14 21:57:14,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 09:57:14" (2/2) ... [2021-06-14 21:57:14,865 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-series-array.wvr.bpl [2021-06-14 21:57:14,869 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 21:57:14,869 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 21:57:14,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 21:57:14,870 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 21:57:14,953 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-14 21:57:14,980 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 21:57:15,053 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 21:57:15,053 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 21:57:15,054 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 21:57:15,054 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 21:57:15,054 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 21:57:15,054 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 21:57:15,054 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 21:57:15,054 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 21:57:15,428 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:15,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:15,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1185787872, now seen corresponding path program 1 times [2021-06-14 21:57:15,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:15,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097813228] [2021-06-14 21:57:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-14 21:57:15,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:15,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097813228] [2021-06-14 21:57:15,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097813228] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 21:57:15,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 21:57:15,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 21:57:15,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994477599] [2021-06-14 21:57:15,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 21:57:15,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:57:15,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 21:57:15,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 21:57:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:15,608 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:57:15,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 21:57:15,612 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:15,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-14 21:57:15,796 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:15,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2033011505, now seen corresponding path program 2 times [2021-06-14 21:57:15,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:15,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254839030] [2021-06-14 21:57:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-14 21:57:16,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:16,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254839030] [2021-06-14 21:57:16,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254839030] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:16,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531144014] [2021-06-14 21:57:16,038 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 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 21:57:16,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 21:57:16,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:57:16,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-14 21:57:16,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:57:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-14 21:57:16,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531144014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:16,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:57:16,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 3] total 15 [2021-06-14 21:57:16,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296369282] [2021-06-14 21:57:16,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-14 21:57:16,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:57:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-14 21:57:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-06-14 21:57:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:16,357 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:57:16,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 15 states have internal predecessors, (79), 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 21:57:16,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:16,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:16,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:16,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 21:57:17,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:57:17,205 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:17,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1432907962, now seen corresponding path program 3 times [2021-06-14 21:57:17,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:17,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779473206] [2021-06-14 21:57:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-06-14 21:57:17,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:17,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779473206] [2021-06-14 21:57:17,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779473206] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 21:57:17,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 21:57:17,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 21:57:17,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283670789] [2021-06-14 21:57:17,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 21:57:17,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:57:17,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 21:57:17,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 21:57:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:17,339 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:57:17,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 21:57:17,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:17,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 21:57:17,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 21:57:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:17,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-14 21:57:17,553 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:17,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:17,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2013455370, now seen corresponding path program 4 times [2021-06-14 21:57:17,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:17,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543540233] [2021-06-14 21:57:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 208 proven. 84 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-06-14 21:57:17,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:17,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543540233] [2021-06-14 21:57:17,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543540233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:17,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874245325] [2021-06-14 21:57:17,791 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 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 21:57:17,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 21:57:17,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:57:17,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-14 21:57:17,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:57:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 253 proven. 43 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-06-14 21:57:18,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874245325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:18,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:57:18,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-06-14 21:57:18,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838007051] [2021-06-14 21:57:18,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 21:57:18,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:57:18,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 21:57:18,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-14 21:57:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:18,148 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:57:18,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:57:18,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:18,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 21:57:18,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:18,148 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-14 21:57:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:19,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:57:19,933 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:19,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:19,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1661689328, now seen corresponding path program 5 times [2021-06-14 21:57:19,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:19,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851796797] [2021-06-14 21:57:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-06-14 21:57:19,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:19,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851796797] [2021-06-14 21:57:19,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851796797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 21:57:19,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 21:57:19,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 21:57:19,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214321727] [2021-06-14 21:57:19,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 21:57:19,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:57:19,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 21:57:19,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 21:57:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:19,973 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:57:19,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 21:57:19,973 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:19,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-14 21:57:19,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:19,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:19,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-14 21:57:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:20,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-14 21:57:20,532 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:20,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1750829216, now seen corresponding path program 6 times [2021-06-14 21:57:20,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:20,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163995589] [2021-06-14 21:57:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 137 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-06-14 21:57:20,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:20,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163995589] [2021-06-14 21:57:20,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163995589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:20,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420815021] [2021-06-14 21:57:20,581 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 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 21:57:20,664 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-14 21:57:20,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:57:20,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-14 21:57:20,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:57:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-06-14 21:57:20,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420815021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:20,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:57:20,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-06-14 21:57:20,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640957399] [2021-06-14 21:57:20,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-14 21:57:20,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:57:20,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-14 21:57:20,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-14 21:57:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:20,799 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:57:20,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 21:57:20,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:20,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-14 21:57:20,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:20,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:20,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:20,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:57:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:57:21,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:57:21,891 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash 596254265, now seen corresponding path program 7 times [2021-06-14 21:57:21,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:21,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656616976] [2021-06-14 21:57:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 31 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-14 21:57:21,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:21,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656616976] [2021-06-14 21:57:21,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656616976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:21,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793529406] [2021-06-14 21:57:21,948 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 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 21:57:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:22,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-14 21:57:22,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:57:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-14 21:57:22,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793529406] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:22,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:57:22,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2021-06-14 21:57:22,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345242867] [2021-06-14 21:57:22,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-14 21:57:22,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:57:22,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-14 21:57:22,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-06-14 21:57:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:22,167 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:57:22,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 21:57:22,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:22,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:57:22,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:22,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:22,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:22,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:57:22,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:57:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:57:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 21:57:23,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-14 21:57:23,147 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:23,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:23,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1602608009, now seen corresponding path program 8 times [2021-06-14 21:57:23,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:23,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104944788] [2021-06-14 21:57:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 21:57:25,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:25,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104944788] [2021-06-14 21:57:25,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104944788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:25,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629476511] [2021-06-14 21:57:25,083 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 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 21:57:25,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 21:57:25,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:57:25,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 82 conjunts are in the unsatisfiable core [2021-06-14 21:57:25,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:57:26,568 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-06-14 21:57:26,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 46 [2021-06-14 21:57:26,570 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 21:57:26,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:57:26,581 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 21:57:26,581 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:102, output treesize:55 [2021-06-14 21:57:26,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2021-06-14 21:57:26,655 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 21:57:26,657 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:57:26,657 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 21:57:26,658 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:27 [2021-06-14 21:57:26,779 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:57:26,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 16 [2021-06-14 21:57:26,781 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 2 xjuncts. [2021-06-14 21:57:26,789 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:57:26,797 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-14 21:57:26,797 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:19 [2021-06-14 21:57:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 21:57:26,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629476511] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:26,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:57:26,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 51 [2021-06-14 21:57:26,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003215688] [2021-06-14 21:57:26,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-06-14 21:57:26,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:57:26,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-06-14 21:57:26,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2447, Unknown=0, NotChecked=0, Total=2652 [2021-06-14 21:57:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:26,906 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:57:26,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 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 21:57:26,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:26,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:57:26,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:26,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:26,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:26,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:57:26,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-14 21:57:26,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:57:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:57:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:57:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:57:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:57:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 21:57:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-14 21:57:29,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:57:29,845 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:57:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:57:29,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1641743603, now seen corresponding path program 9 times [2021-06-14 21:57:29,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:57:29,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55176449] [2021-06-14 21:57:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:57:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:57:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 162 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-14 21:57:31,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:57:31,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55176449] [2021-06-14 21:57:31,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55176449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:57:31,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920277397] [2021-06-14 21:57:31,936 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 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 21:57:32,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-14 21:57:32,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:57:32,062 WARN L261 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 124 conjunts are in the unsatisfiable core [2021-06-14 21:57:32,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:57:36,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:36,566 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 130 [2021-06-14 21:57:36,567 INFO L354 Elim1Store]: treesize reduction 10, result has 96.6 percent of original size [2021-06-14 21:57:36,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 18 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 27 case distinctions, treesize of input 118 treesize of output 360 [2021-06-14 21:57:37,647 WARN L205 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 1558 DAG size of output: 804 [2021-06-14 21:57:38,271 WARN L205 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 1558 DAG size of output: 804 [2021-06-14 21:57:38,697 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 751 DAG size of output: 751 [2021-06-14 21:57:38,709 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 21:57:40,287 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 777 DAG size of output: 126 [2021-06-14 21:57:40,288 INFO L628 ElimStorePlain]: treesize reduction 13278, result has 3.2 percent of original size [2021-06-14 21:57:42,001 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 21:57:42,001 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:184, output treesize:115 [2021-06-14 21:57:42,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:42,441 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-14 21:57:42,441 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:57:42,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 32 case distinctions, treesize of input 105 treesize of output 397 [2021-06-14 21:57:42,841 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 802 DAG size of output: 552 [2021-06-14 21:57:45,037 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 3328 DAG size of output: 1755 [2021-06-14 21:57:46,920 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 3328 DAG size of output: 1755 [2021-06-14 21:57:48,300 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1631 DAG size of output: 1631 [2021-06-14 21:57:48,331 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 21:57:48,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:48,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:48,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:48,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:48,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:57:48,526 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-14 21:57:48,526 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:57:48,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 59 treesize of output 117 [2021-06-14 21:57:48,530 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-14 21:57:54,659 WARN L205 SmtUtils]: Spent 6.13 s on a formula simplification. DAG size of input: 1643 DAG size of output: 137 [2021-06-14 21:57:54,659 INFO L628 ElimStorePlain]: treesize reduction 34997, result has 1.8 percent of original size [2021-06-14 21:57:58,188 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2021-06-14 21:57:58,188 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:195, output treesize:647 [2021-06-14 21:58:01,742 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 131 [2021-06-14 21:58:02,036 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2021-06-14 21:58:05,972 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown