/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-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-07 04:19:29,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-07 04:19:29,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-07 04:19:29,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-07 04:19:29,900 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-Random7777.epf [2021-06-07 04:19:29,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-07 04:19:29,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-07 04:19:29,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-07 04:19:29,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-07 04:19:29,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-07 04:19:29,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-07 04:19:29,938 INFO L138 SettingsManager]: * Use SBE=true [2021-06-07 04:19:29,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-07 04:19:29,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-07 04:19:29,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-07 04:19:29,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-07 04:19:29,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-07 04:19:29,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-07 04:19:29,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-07 04:19:29,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-07 04:19:29,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-07 04:19:29,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-07 04:19:29,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-07 04:19:29,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-07 04:19:29,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-07 04:19:29,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-07 04:19:29,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-07 04:19:29,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-07 04:19:29,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 04:19:29,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-07 04:19:29,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-07 04:19:29,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-07 04:19:29,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-07 04:19:29,942 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-07 04:19:29,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-07 04:19:29,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-07 04:19:29,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-07 04:19:29,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-07 04:19:29,943 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-07 04:19:29,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-07 04:19:29,943 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-07 04:19:30,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-07 04:19:30,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-07 04:19:30,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-07 04:19:30,268 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-07 04:19:30,269 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-07 04:19:30,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl [2021-06-07 04:19:30,269 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl' [2021-06-07 04:19:30,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-07 04:19:30,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-07 04:19:30,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-07 04:19:30,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-07 04:19:30,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-07 04:19:30,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-07 04:19:30,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-07 04:19:30,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-07 04:19:30,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-07 04:19:30,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/1) ... [2021-06-07 04:19:30,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-07 04:19:30,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-07 04:19:30,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-07 04:19:30,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-07 04:19:30,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (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 [2021-06-07 04:19:30,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-07 04:19:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-07 04:19:30,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-07 04:19:30,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-07 04:19:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-07 04:19:30,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-07 04:19:30,409 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-07 04:19:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-07 04:19:30,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-07 04:19:30,409 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-07 04:19:30,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-07 04:19:30,572 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-07 04:19:30,573 INFO L202 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 04:19:30 BoogieIcfgContainer [2021-06-07 04:19:30,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-07 04:19:30,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-07 04:19:30,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-07 04:19:30,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-07 04:19:30,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 04:19:30" (1/2) ... [2021-06-07 04:19:30,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b544e87 and model type dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 04:19:30, skipping insertion in model container [2021-06-07 04:19:30,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 04:19:30" (2/2) ... [2021-06-07 04:19:30,579 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq.wvr.bpl [2021-06-07 04:19:30,584 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-07 04:19:30,584 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-07 04:19:30,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-07 04:19:30,585 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-07 04:19:30,612 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-07 04:19:30,640 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 [2021-06-07 04:19:30,734 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-07 04:19:30,735 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-07 04:19:30,735 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-07 04:19:30,735 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-07 04:19:30,735 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-07 04:19:30,735 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-07 04:19:30,735 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-07 04:19:30,735 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-07 04:19:30,837 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:19:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:19:30,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1205992323, now seen corresponding path program 1 times [2021-06-07 04:19:30,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:19:30,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832528980] [2021-06-07 04:19:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:19:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:19:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:19:30,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:19:30,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832528980] [2021-06-07 04:19:30,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832528980] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 04:19:30,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 04:19:30,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 04:19:30,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442624437] [2021-06-07 04:19:30,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 04:19:30,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:19:31,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 04:19:31,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-07 04:19:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:31,010 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:19:31,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-06-07 04:19:31,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-07 04:19:31,090 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:19:31,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:19:31,093 INFO L82 PathProgramCache]: Analyzing trace with hash -776643309, now seen corresponding path program 1 times [2021-06-07 04:19:31,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:19:31,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612471828] [2021-06-07 04:19:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:19:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:19:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:19:31,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:19:31,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612471828] [2021-06-07 04:19:31,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612471828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 04:19:31,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 04:19:31,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-07 04:19:31,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16428402] [2021-06-07 04:19:31,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 04:19:31,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:19:31,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 04:19:31,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-07 04:19:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:31,141 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:19:31,141 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) [2021-06-07 04:19:31,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-07 04:19:31,178 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:19:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:19:31,179 INFO L82 PathProgramCache]: Analyzing trace with hash 571055971, now seen corresponding path program 1 times [2021-06-07 04:19:31,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:19:31,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814177006] [2021-06-07 04:19:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:19:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:19:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:19:31,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:19:31,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814177006] [2021-06-07 04:19:31,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814177006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 04:19:31,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 04:19:31,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-07 04:19:31,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956157442] [2021-06-07 04:19:31,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-07 04:19:31,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:19:31,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-07 04:19:31,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-07 04:19:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:31,268 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:19:31,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-06-07 04:19:31,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:19:31,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-07 04:19:31,311 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:19:31,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:19:31,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1016586710, now seen corresponding path program 1 times [2021-06-07 04:19:31,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:19:31,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559316688] [2021-06-07 04:19:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:19:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:19:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-07 04:19:31,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:19:31,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559316688] [2021-06-07 04:19:31,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559316688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:19:31,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602036919] [2021-06-07 04:19:31,374 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 [2021-06-07 04:19:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:19:31,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 04:19:31,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:19:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-07 04:19:31,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602036919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:19:31,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:19:31,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-06-07 04:19:31,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331688609] [2021-06-07 04:19:31,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-07 04:19:31,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:19:31,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-07 04:19:31,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-06-07 04:19:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:31,603 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:19:31,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-06-07 04:19:31,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,604 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:19:31,605 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:19:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:19:31,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:19:31,909 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:19:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:19:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash 253867636, now seen corresponding path program 2 times [2021-06-07 04:19:31,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:19:31,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408356234] [2021-06-07 04:19:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:19:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:19:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 3 proven. 69 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-07 04:19:32,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:19:32,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408356234] [2021-06-07 04:19:32,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408356234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:19:32,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888896424] [2021-06-07 04:19:32,747 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 [2021-06-07 04:19:32,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 04:19:32,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:19:32,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-07 04:19:32,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:19:34,128 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 04:19:34,129 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 [2021-06-07 04:19:34,165 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 04:19:34,260 INFO L628 ElimStorePlain]: treesize reduction 92, result has 60.2 percent of original size [2021-06-07 04:19:34,292 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. [2021-06-07 04:19:34,292 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:83, output treesize:59 [2021-06-07 04:19:34,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:19:34,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:19:34,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:19:34,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 04:19:34,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:19:34,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:19:34,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:19:34,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 04:19:34,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:19:34,857 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 [2021-06-07 04:19:34,860 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 04:19:34,866 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 04:19:34,868 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-07 04:19:34,868 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:5 [2021-06-07 04:19:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:19:34,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888896424] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:19:34,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:19:34,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 48 [2021-06-07 04:19:34,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201831881] [2021-06-07 04:19:34,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-06-07 04:19:34,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:19:34,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-06-07 04:19:34,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2021, Unknown=0, NotChecked=0, Total=2352 [2021-06-07 04:19:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:34,885 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:19:34,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 1.9183673469387754) internal successors, (94), 48 states have internal predecessors, (94), 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) [2021-06-07 04:19:34,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:34,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:34,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:19:34,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:19:34,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:19:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:19:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 04:19:36,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:19:36,033 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:19:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:19:36,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1339159260, now seen corresponding path program 3 times [2021-06-07 04:19:36,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:19:36,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052361206] [2021-06-07 04:19:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:19:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:19:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 134 proven. 88 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-06-07 04:19:36,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:19:36,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052361206] [2021-06-07 04:19:36,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052361206] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:19:36,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488152612] [2021-06-07 04:19:36,161 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 [2021-06-07 04:19:36,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-07 04:19:36,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:19:36,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-07 04:19:36,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:19:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 161 proven. 58 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-06-07 04:19:36,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488152612] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:19:36,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:19:36,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-06-07 04:19:36,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212735765] [2021-06-07 04:19:36,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-07 04:19:36,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:19:36,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-07 04:19:36,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-07 04:19:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:36,396 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:19:36,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 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) [2021-06-07 04:19:36,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:36,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:36,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:19:36,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:19:36,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 04:19:36,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:19:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:19:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:19:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:19:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 04:19:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:19:36,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-07 04:19:36,657 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:19:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:19:36,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1931742593, now seen corresponding path program 4 times [2021-06-07 04:19:36,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:19:36,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845290261] [2021-06-07 04:19:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:19:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:19:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 9 proven. 293 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-06-07 04:19:37,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:19:37,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845290261] [2021-06-07 04:19:37,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845290261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:19:37,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051479418] [2021-06-07 04:19:37,749 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 [2021-06-07 04:19:37,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-07 04:19:37,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:19:37,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 95 conjunts are in the unsatisfiable core [2021-06-07 04:19:37,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:20:11,537 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-07 04:20:41,582 WARN L205 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-07 04:22:07,581 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-07 04:22:07,786 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-07 04:22:07,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 04:22:07,786 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 [2021-06-07 04:22:07,834 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 04:22:08,376 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 166 [2021-06-07 04:22:08,377 INFO L628 ElimStorePlain]: treesize reduction 386, result has 60.1 percent of original size [2021-06-07 04:22:08,642 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. [2021-06-07 04:22:08,642 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:147, output treesize:150 [2021-06-07 04:22:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 04:22:10,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-07 04:22:10,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-07 04:22:10,775 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 [2021-06-07 04:22:10,778 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 04:22:10,784 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 04:22:10,785 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-07 04:22:10,785 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:101, output treesize:5 [2021-06-07 04:22:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 94 proven. 291 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 04:22:10,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051479418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:22:10,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:22:10,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 50] total 79 [2021-06-07 04:22:10,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952602704] [2021-06-07 04:22:10,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-06-07 04:22:10,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:22:10,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-06-07 04:22:10,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=5555, Unknown=20, NotChecked=0, Total=6320 [2021-06-07 04:22:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:22:10,801 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:22:10,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.85) internal successors, (148), 79 states have internal predecessors, (148), 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) [2021-06-07 04:22:10,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:22:10,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:22:10,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:22:10,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:22:10,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 04:22:10,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:22:10,802 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:22:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:22:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:22:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:22:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:22:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 04:22:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:22:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-07 04:22:19,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:22:19,143 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:22:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:22:19,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1534868657, now seen corresponding path program 5 times [2021-06-07 04:22:19,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:22:19,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032556184] [2021-06-07 04:22:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:22:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:22:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 226 proven. 144 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-06-07 04:22:19,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:22:19,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032556184] [2021-06-07 04:22:19,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032556184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:22:19,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640837679] [2021-06-07 04:22:19,242 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 [2021-06-07 04:22:19,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-06-07 04:22:19,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:22:19,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-07 04:22:19,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:22:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 261 proven. 106 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-06-07 04:22:19,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640837679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:22:19,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 04:22:19,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 7 [2021-06-07 04:22:19,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335749806] [2021-06-07 04:22:19,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-07 04:22:19,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 04:22:19,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-07 04:22:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-07 04:22:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:22:19,497 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 04:22:19,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-06-07 04:22:19,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:22:19,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:22:19,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:22:19,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:22:19,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-06-07 04:22:19,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:22:19,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-07 04:22:19,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 04:22:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:22:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 04:22:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 04:22:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 04:22:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-07 04:22:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 04:22:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-07 04:22:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-07 04:22:19,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-06-07 04:22:19,753 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 04:22:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 04:22:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1703259790, now seen corresponding path program 6 times [2021-06-07 04:22:19,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 04:22:19,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555515317] [2021-06-07 04:22:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 04:22:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 04:22:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 13 proven. 462 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-06-07 04:22:21,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 04:22:21,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555515317] [2021-06-07 04:22:21,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555515317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 04:22:21,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682573163] [2021-06-07 04:22:21,025 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 [2021-06-07 04:22:21,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-06-07 04:22:21,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 04:22:21,097 WARN L261 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 121 conjunts are in the unsatisfiable core [2021-06-07 04:22:21,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 04:22:23,786 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-07 04:22:27,337 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-07 04:22:30,524 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-07 04:22:34,644 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-07 04:22:35,265 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-07 04:22:46,523 WARN L205 SmtUtils]: Spent 2.97 s on a formula simplification that was a NOOP. DAG size: 127 [2021-06-07 04:23:07,813 WARN L205 SmtUtils]: Spent 14.56 s on a formula simplification. DAG size of input: 128 DAG size of output: 127 [2021-06-07 04:23:13,237 WARN L205 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 154 [2021-06-07 04:23:29,720 WARN L205 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 158 [2021-06-07 04:23:56,471 WARN L205 SmtUtils]: Spent 9.02 s on a formula simplification that was a NOOP. DAG size: 159 [2021-06-07 04:24:10,288 WARN L205 SmtUtils]: Spent 13.46 s on a formula simplification that was a NOOP. DAG size: 163 [2021-06-07 04:24:30,951 WARN L205 SmtUtils]: Spent 17.75 s on a formula simplification that was a NOOP. DAG size: 165 [2021-06-07 04:25:01,533 WARN L205 SmtUtils]: Spent 22.73 s on a formula simplification that was a NOOP. DAG size: 177 [2021-06-07 04:25:07,979 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-06-07 04:25:07,981 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-06-07 04:25:08,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 04:25:08,182 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.parseSuccess(Executor.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:643) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java: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) ... 47 more [2021-06-07 04:25:08,186 INFO L168 Benchmark]: Toolchain (without parser) took 337885.85 ms. Allocated memory was 352.3 MB in the beginning and 476.1 MB in the end (delta: 123.7 MB). Free memory was 331.6 MB in the beginning and 424.0 MB in the end (delta: -92.4 MB). Peak memory consumption was 285.5 MB. Max. memory is 16.0 GB. [2021-06-07 04:25:08,186 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 352.3 MB. Free memory is still 332.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-07 04:25:08,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.28 ms. Allocated memory is still 352.3 MB. Free memory was 331.4 MB in the beginning and 330.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-07 04:25:08,186 INFO L168 Benchmark]: Boogie Preprocessor took 17.62 ms. Allocated memory is still 352.3 MB. Free memory was 329.9 MB in the beginning and 329.1 MB in the end (delta: 848.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-07 04:25:08,186 INFO L168 Benchmark]: RCFGBuilder took 224.79 ms. Allocated memory is still 352.3 MB. Free memory was 329.0 MB in the beginning and 315.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-07 04:25:08,187 INFO L168 Benchmark]: TraceAbstraction took 337610.83 ms. Allocated memory was 352.3 MB in the beginning and 476.1 MB in the end (delta: 123.7 MB). Free memory was 315.0 MB in the beginning and 424.0 MB in the end (delta: -109.0 MB). Peak memory consumption was 268.7 MB. Max. memory is 16.0 GB. [2021-06-07 04:25:08,187 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 0.10 ms. Allocated memory is still 352.3 MB. Free memory is still 332.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.28 ms. Allocated memory is still 352.3 MB. Free memory was 331.4 MB in the beginning and 330.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.62 ms. Allocated memory is still 352.3 MB. Free memory was 329.9 MB in the beginning and 329.1 MB in the end (delta: 848.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 224.79 ms. Allocated memory is still 352.3 MB. Free memory was 329.0 MB in the beginning and 315.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 337610.83 ms. Allocated memory was 352.3 MB in the beginning and 476.1 MB in the end (delta: 123.7 MB). Free memory was 315.0 MB in the beginning and 424.0 MB in the end (delta: -109.0 MB). Peak memory consumption was 268.7 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...