/usr/bin/java -Xmx16000000000 -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-DelaySleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 22:49:29,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 22:49:29,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 22:49:29,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 22:49:29,130 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-DelaySleep-NoLbe-Random521.epf [2021-06-06 22:49:29,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 22:49:29,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 22:49:29,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 22:49:29,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 22:49:29,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 22:49:29,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 22:49:29,165 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 22:49:29,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 22:49:29,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 22:49:29,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 22:49:29,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 22:49:29,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 22:49:29,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 22:49:29,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 22:49:29,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 22:49:29,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 22:49:29,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 22:49:29,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 22:49:29,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 22:49:29,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 22:49:29,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 22:49:29,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 22:49:29,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 22:49:29,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 22:49:29,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 22:49:29,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 22:49:29,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 22:49:29,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 22:49:29,168 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 22:49:29,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 22:49:29,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 22:49:29,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 22:49:29,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 22:49:29,169 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 22:49:29,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 22:49:29,169 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 22:49:29,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 22:49:29,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 22:49:29,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 22:49:29,499 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 22:49:29,501 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 22:49:29,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl [2021-06-06 22:49:29,502 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl' [2021-06-06 22:49:29,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 22:49:29,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 22:49:29,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 22:49:29,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 22:49:29,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 22:49:29,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 22:49:29,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 22:49:29,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 22:49:29,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 22:49:29,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/1) ... [2021-06-06 22:49:29,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 22:49:29,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 22:49:29,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 22:49:29,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 22:49:29,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (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 [2021-06-06 22:49:29,630 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 22:49:29,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 22:49:29,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 22:49:29,631 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 22:49:29,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 22:49:29,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 22:49:29,632 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 22:49:29,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 22:49:29,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 22:49:29,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 22:49:29,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 22:49:29,824 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 22:49:29,825 INFO L202 PluginConnector]: Adding new model dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 10:49:29 BoogieIcfgContainer [2021-06-06 22:49:29,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 22:49:29,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 22:49:29,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 22:49:29,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 22:49:29,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 10:49:29" (1/2) ... [2021-06-06 22:49:29,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe3092b and model type dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 10:49:29, skipping insertion in model container [2021-06-06 22:49:29,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 10:49:29" (2/2) ... [2021-06-06 22:49:29,831 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq-array.wvr.bpl [2021-06-06 22:49:29,836 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 22:49:29,836 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 22:49:29,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 22:49:29,837 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 22:49:29,863 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-06 22:49:29,880 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-06-06 22:49:29,979 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 22:49:29,979 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 22:49:29,979 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 22:49:29,979 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 22:49:29,979 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 22:49:29,979 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 22:49:29,980 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 22:49:29,980 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 22:49:30,031 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:30,039 INFO L82 PathProgramCache]: Analyzing trace with hash 972027343, now seen corresponding path program 1 times [2021-06-06 22:49:30,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:30,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766863518] [2021-06-06 22:49:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:30,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:49:30,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766863518] [2021-06-06 22:49:30,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766863518] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 22:49:30,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 22:49:30,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 22:49:30,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347642919] [2021-06-06 22:49:30,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 22:49:30,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:49:30,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 22:49:30,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 22:49:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:30,204 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:49:30,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-06-06 22:49:30,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:30,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 22:49:30,230 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:30,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:30,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1852903020, now seen corresponding path program 1 times [2021-06-06 22:49:30,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:30,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585535347] [2021-06-06 22:49:30,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:30,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:49:30,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585535347] [2021-06-06 22:49:30,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585535347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 22:49:30,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 22:49:30,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 22:49:30,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35071284] [2021-06-06 22:49:30,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 22:49:30,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:49:30,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 22:49:30,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-06 22:49:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:30,326 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:49:30,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-06-06 22:49:30,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:30,326 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:30,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 22:49:30,416 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:30,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:30,416 INFO L82 PathProgramCache]: Analyzing trace with hash 985208118, now seen corresponding path program 1 times [2021-06-06 22:49:30,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:30,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085634909] [2021-06-06 22:49:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:30,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:49:30,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085634909] [2021-06-06 22:49:30,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085634909] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:30,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683710067] [2021-06-06 22:49:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:30,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-06 22:49:30,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:49:30,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-06-06 22:49:30,776 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:49:30,781 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:30,783 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 22:49:30,784 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2021-06-06 22:49:30,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-06 22:49:30,825 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:49:30,829 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:30,830 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 22:49:30,830 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2021-06-06 22:49:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:30,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683710067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:30,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:49:30,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 22:49:30,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35476251] [2021-06-06 22:49:30,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 22:49:30,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:49:30,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 22:49:30,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-06 22:49:30,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:30,853 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:49:30,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-06-06 22:49:30,853 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:30,853 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:30,854 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:31,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:31,169 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:31,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1656872365, now seen corresponding path program 2 times [2021-06-06 22:49:31,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:31,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103539564] [2021-06-06 22:49:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:31,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:49:31,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103539564] [2021-06-06 22:49:31,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103539564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:31,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264081323] [2021-06-06 22:49:31,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:31,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 22:49:31,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:49:31,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-06 22:49:31,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:49:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 22:49:31,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264081323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:31,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:49:31,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2021-06-06 22:49:31,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853326980] [2021-06-06 22:49:31,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-06 22:49:31,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:49:31,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-06 22:49:31,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-06 22:49:31,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:31,375 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:49:31,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 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) [2021-06-06 22:49:31,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:31,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:31,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:31,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-06 22:49:31,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:31,721 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:31,721 INFO L82 PathProgramCache]: Analyzing trace with hash 226179487, now seen corresponding path program 3 times [2021-06-06 22:49:31,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:31,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808814065] [2021-06-06 22:49:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 22:49:32,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:49:32,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808814065] [2021-06-06 22:49:32,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808814065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:32,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399343597] [2021-06-06 22:49:32,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:32,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 22:49:32,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:49:32,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-06 22:49:32,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:49:32,556 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:32,556 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 24 treesize of output 24 [2021-06-06 22:49:32,562 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:49:32,567 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:32,569 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. [2021-06-06 22:49:32,569 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:30, output treesize:16 [2021-06-06 22:49:32,662 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:32,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2021-06-06 22:49:32,714 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-06 22:49:32,727 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:32,740 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 22:49:32,740 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:21 [2021-06-06 22:49:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:32,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399343597] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:32,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:49:32,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2021-06-06 22:49:32,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883995485] [2021-06-06 22:49:32,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-06 22:49:32,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:49:32,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-06 22:49:32,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-06-06 22:49:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:32,837 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:49:32,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 25 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) [2021-06-06 22:49:32,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:32,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:32,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:32,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-06 22:49:32,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 22:49:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 22:49:34,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:34,193 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:34,193 INFO L82 PathProgramCache]: Analyzing trace with hash 602764687, now seen corresponding path program 4 times [2021-06-06 22:49:34,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:34,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449193876] [2021-06-06 22:49:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-06-06 22:49:34,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:49:34,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449193876] [2021-06-06 22:49:34,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449193876] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:34,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234406683] [2021-06-06 22:49:34,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:34,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 22:49:34,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:49:34,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-06 22:49:34,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:49:35,618 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:35,619 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 58 treesize of output 86 [2021-06-06 22:49:35,631 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:49:35,722 INFO L628 ElimStorePlain]: treesize reduction 75, result has 66.5 percent of original size [2021-06-06 22:49:35,762 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 22:49:35,762 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:76, output treesize:76 [2021-06-06 22:49:36,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 22:49:36,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:36,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 22:49:36,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 22:49:36,116 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:49:36,123 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:36,125 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 22:49:36,125 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:5 [2021-06-06 22:49:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:36,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234406683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:36,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:49:36,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26] total 38 [2021-06-06 22:49:36,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041730357] [2021-06-06 22:49:36,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-06 22:49:36,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:49:36,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-06 22:49:36,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1274, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 22:49:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:36,145 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:49:36,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 38 states have internal predecessors, (73), 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) [2021-06-06 22:49:36,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:36,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:36,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:36,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 22:49:36,145 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-06 22:49:36,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 22:49:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 22:49:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 22:49:37,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:37,985 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1987684560, now seen corresponding path program 5 times [2021-06-06 22:49:37,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:37,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859684623] [2021-06-06 22:49:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-06-06 22:49:38,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:49:38,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859684623] [2021-06-06 22:49:38,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859684623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:38,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284712774] [2021-06-06 22:49:38,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:38,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 22:49:38,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:49:38,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 57 conjunts are in the unsatisfiable core [2021-06-06 22:49:38,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:49:39,897 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:39,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 126 [2021-06-06 22:49:39,914 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:49:40,066 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2021-06-06 22:49:40,067 INFO L628 ElimStorePlain]: treesize reduction 145, result has 58.6 percent of original size [2021-06-06 22:49:40,105 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 22:49:40,105 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:90, output treesize:61 [2021-06-06 22:49:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 22:49:40,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:49:40,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 22:49:40,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 19 [2021-06-06 22:49:40,688 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:49:40,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:40,696 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 22:49:40,696 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:62, output treesize:5 [2021-06-06 22:49:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 21 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:40,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284712774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:40,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:49:40,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 32] total 51 [2021-06-06 22:49:40,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127595642] [2021-06-06 22:49:40,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-06-06 22:49:40,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:49:40,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-06-06 22:49:40,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=2359, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 22:49:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:40,710 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:49:40,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 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) [2021-06-06 22:49:40,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:40,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:40,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:40,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 22:49:40,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-06 22:49:40,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-06 22:49:40,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 22:49:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 22:49:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 22:49:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 22:49:43,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:43,281 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1616302855, now seen corresponding path program 6 times [2021-06-06 22:49:43,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:43,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638004471] [2021-06-06 22:49:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:49:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-06-06 22:49:44,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:49:44,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638004471] [2021-06-06 22:49:44,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638004471] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:44,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044710039] [2021-06-06 22:49:44,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 22:49:44,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 22:49:44,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 22:49:44,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 71 conjunts are in the unsatisfiable core [2021-06-06 22:49:44,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:49:45,649 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:49:45,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 176 [2021-06-06 22:49:45,670 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:49:45,836 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 86 [2021-06-06 22:49:45,837 INFO L628 ElimStorePlain]: treesize reduction 220, result has 55.5 percent of original size [2021-06-06 22:49:45,908 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 22:49:45,909 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:96, output treesize:60 [2021-06-06 22:49:47,414 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2021-06-06 22:49:47,414 INFO L354 Elim1Store]: treesize reduction 112, result has 51.1 percent of original size [2021-06-06 22:49:47,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 62 treesize of output 138 [2021-06-06 22:49:48,506 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 214 [2021-06-06 22:49:48,635 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 214 [2021-06-06 22:49:48,770 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 218 [2021-06-06 22:49:49,514 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 248 [2021-06-06 22:49:49,679 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 276 [2021-06-06 22:49:49,846 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 276 [2021-06-06 22:49:50,025 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 280 [2021-06-06 22:49:50,925 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 259 [2021-06-06 22:49:51,179 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 306 [2021-06-06 22:49:51,357 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 306 [2021-06-06 22:49:51,560 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 304 [2021-06-06 22:49:52,327 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 5 xjuncts. [2021-06-06 22:49:52,428 INFO L628 ElimStorePlain]: treesize reduction 621, result has 3.9 percent of original size [2021-06-06 22:49:52,431 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 22:49:52,431 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:71, output treesize:21 [2021-06-06 22:49:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:49:52,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044710039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:49:52,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:49:52,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 39] total 68 [2021-06-06 22:49:52,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063757221] [2021-06-06 22:49:52,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-06-06 22:49:52,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:49:52,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-06-06 22:49:52,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=4248, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 22:49:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:52,566 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:49:52,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 1.6521739130434783) internal successors, (114), 68 states have internal predecessors, (114), 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) [2021-06-06 22:49:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 22:49:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-06 22:49:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-06 22:49:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-06-06 22:49:52,566 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:49:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:49:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:49:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:49:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 22:49:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 22:49:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 22:49:59,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 22:49:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 22:49:59,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-06 22:49:59,629 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 22:49:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 22:49:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash -882199117, now seen corresponding path program 7 times [2021-06-06 22:49:59,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 22:49:59,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957409823] [2021-06-06 22:49:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 22:49:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 223 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-06 22:50:00,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 22:50:00,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957409823] [2021-06-06 22:50:00,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957409823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:00,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966127319] [2021-06-06 22:50:00,707 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 [2021-06-06 22:50:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 22:50:00,750 WARN L261 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 95 conjunts are in the unsatisfiable core [2021-06-06 22:50:00,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 22:50:16,762 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-06 22:50:36,662 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-06 22:50:36,879 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-06 22:50:36,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:50:36,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 122 treesize of output 302 [2021-06-06 22:50:36,933 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:50:37,525 WARN L205 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 164 [2021-06-06 22:50:37,525 INFO L628 ElimStorePlain]: treesize reduction 390, result has 59.4 percent of original size [2021-06-06 22:50:37,785 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-06 22:50:37,786 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:140, output treesize:143 [2021-06-06 22:50:39,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 22:50:39,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 22:50:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 22:50:39,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 28 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 28 [2021-06-06 22:50:39,795 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 22:50:39,801 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 22:50:39,803 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-06 22:50:39,803 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:101, output treesize:5 [2021-06-06 22:50:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 45 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 22:50:39,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966127319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 22:50:39,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 22:50:39,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 50] total 83 [2021-06-06 22:50:39,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722881366] [2021-06-06 22:50:39,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-06-06 22:50:39,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 22:50:39,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-06-06 22:50:39,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=6396, Unknown=2, NotChecked=0, Total=6972 [2021-06-06 22:50:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:39,823 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 22:50:39,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.619047619047619) internal successors, (136), 83 states have internal predecessors, (136), 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) [2021-06-06 22:50:39,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-06 22:50:39,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 22:50:39,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-06 22:50:39,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 22:50:39,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-06 22:50:39,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-06-06 22:50:39,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2021-06-06 22:50:39,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2021-06-06 22:50:39,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 22:50:45,139 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-06-06 22:50:57,690 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-06-06 22:50:57,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable667 [2021-06-06 22:50:57,892 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.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkValidity(IncrementalHoareTripleChecker.java:676) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:200) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetDelayReduction.search(SleepSetDelayReduction.java:183) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetDelayReduction.(SleepSetDelayReduction.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:209) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:509) 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:364) 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) ... 42 more [2021-06-06 22:50:57,895 INFO L168 Benchmark]: Toolchain (without parser) took 88368.60 ms. Allocated memory was 362.8 MB in the beginning and 914.4 MB in the end (delta: 551.6 MB). Free memory was 342.1 MB in the beginning and 589.4 MB in the end (delta: -247.3 MB). Peak memory consumption was 306.6 MB. Max. memory is 16.0 GB. [2021-06-06 22:50:57,896 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 362.8 MB. Free memory was 343.3 MB in the beginning and 343.2 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 22:50:57,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.09 ms. Allocated memory is still 362.8 MB. Free memory was 342.1 MB in the beginning and 340.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 22:50:57,896 INFO L168 Benchmark]: Boogie Preprocessor took 13.09 ms. Allocated memory is still 362.8 MB. Free memory was 340.7 MB in the beginning and 339.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 22:50:57,896 INFO L168 Benchmark]: RCFGBuilder took 259.15 ms. Allocated memory is still 362.8 MB. Free memory was 339.5 MB in the beginning and 326.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-06 22:50:57,896 INFO L168 Benchmark]: TraceAbstraction took 88067.87 ms. Allocated memory was 362.8 MB in the beginning and 914.4 MB in the end (delta: 551.6 MB). Free memory was 326.3 MB in the beginning and 589.4 MB in the end (delta: -263.1 MB). Peak memory consumption was 289.8 MB. Max. memory is 16.0 GB. [2021-06-06 22:50:57,896 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 0.14 ms. Allocated memory is still 362.8 MB. Free memory was 343.3 MB in the beginning and 343.2 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.09 ms. Allocated memory is still 362.8 MB. Free memory was 342.1 MB in the beginning and 340.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.09 ms. Allocated memory is still 362.8 MB. Free memory was 340.7 MB in the beginning and 339.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 259.15 ms. Allocated memory is still 362.8 MB. Free memory was 339.5 MB in the beginning and 326.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 88067.87 ms. Allocated memory was 362.8 MB in the beginning and 914.4 MB in the end (delta: 551.6 MB). Free memory was 326.3 MB in the beginning and 589.4 MB in the end (delta: -263.1 MB). Peak memory consumption was 289.8 MB. Max. memory is 16.0 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...