/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-DelaySleepPersistent-NoLbe.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-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-03 22:52:54,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 22:52:54,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 22:52:54,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 22:52:54,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 22:52:54,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 22:52:54,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 22:52:54,768 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-DelaySleepPersistent-NoLbe.epf [2021-05-03 22:52:54,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 22:52:54,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 22:52:54,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-03 22:52:54,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-03 22:52:54,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-03 22:52:54,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-03 22:52:54,800 INFO L138 SettingsManager]: * Use SBE=true [2021-05-03 22:52:54,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 22:52:54,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 22:52:54,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 22:52:54,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 22:52:54,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 22:52:54,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 22:52:54,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 22:52:54,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 22:52:54,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_DELAY_SET [2021-05-03 22:52:54,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-03 22:52:55,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 22:52:55,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 22:52:55,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 22:52:55,069 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-03 22:52:55,069 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-03 22:52:55,070 INFO L432 ainManager$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 [2021-05-03 22:52:55,070 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' [2021-05-03 22:52:55,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 22:52:55,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 22:52:55,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-03 22:52:55,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-03 22:52:55,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-03 22:52:55,175 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,181 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-03 22:52:55,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 22:52:55,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 22:52:55,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 22:52:55,194 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,194 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,194 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,195 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,197 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,200 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,200 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 03.05 10:52:55" (1/1) ... [2021-05-03 22:52:55,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 22:52:55,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 22:52:55,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 22:52:55,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 22:52:55,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 10:52:55" (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 [2021-05-03 22:52:55,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-03 22:52:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-03 22:52:55,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-03 22:52:55,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-03 22:52:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-03 22:52:55,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-03 22:52:55,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-03 22:52:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 22:52:55,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 22:52:55,262 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-03 22:52:55,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 22:52:55,397 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-03 22:52:55,399 INFO L202 PluginConnector]: Adding new model dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 10:52:55 BoogieIcfgContainer [2021-05-03 22:52:55,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 22:52:55,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 22:52:55,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 22:52:55,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 22:52:55,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 10:52:55" (1/2) ... [2021-05-03 22:52:55,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b42aae5 and model type dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 10:52:55, skipping insertion in model container [2021-05-03 22:52:55,404 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 03.05 10:52:55" (2/2) ... [2021-05-03 22:52:55,405 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq-array.wvr.bpl [2021-05-03 22:52:55,408 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-03 22:52:55,419 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-03 22:52:55,422 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 22:52:55,422 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-03 22:52:55,457 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-05-03 22:52:55,473 INFO L253 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 [2021-05-03 22:52:55,509 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 22:52:55,509 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 22:52:55,510 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-03 22:52:55,510 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 22:52:55,510 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 22:52:55,510 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 22:52:55,510 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 22:52:55,510 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 22:52:55,606 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:52:55,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:52:55,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1620049623, now seen corresponding path program 1 times [2021-05-03 22:52:55,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:52:55,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83002584] [2021-05-03 22:52:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:52:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:52:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:55,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83002584] [2021-05-03 22:52:55,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 22:52:55,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 22:52:55,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409237983] [2021-05-03 22:52:55,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 22:52:55,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:52:55,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 22:52:55,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 22:52:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:55,738 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:52:55,740 INFO L481 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) [2021-05-03 22:52:55,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:55,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 22:52:55,761 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:52:55,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:52:55,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1217558278, now seen corresponding path program 1 times [2021-05-03 22:52:55,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:52:55,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598036835] [2021-05-03 22:52:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:52:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:52:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:55,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598036835] [2021-05-03 22:52:55,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 22:52:55,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 22:52:55,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974242671] [2021-05-03 22:52:55,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-03 22:52:55,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:52:55,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-03 22:52:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-03 22:52:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:55,829 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:52:55,829 INFO L481 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) [2021-05-03 22:52:55,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:55,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:55,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 22:52:55,847 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:52:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:52:55,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1103442064, now seen corresponding path program 1 times [2021-05-03 22:52:55,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:52:55,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297423264] [2021-05-03 22:52:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:52:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:52:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:55,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297423264] [2021-05-03 22:52:55,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59815010] [2021-05-03 22:52:55,963 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 [2021-05-03 22:52:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:52:55,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-03 22:52:56,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:52:56,128 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 [2021-05-03 22:52:56,133 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:52:56,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:52:56,141 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:52:56,141 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2021-05-03 22:52:56,178 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 [2021-05-03 22:52:56,182 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:52:56,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:52:56,186 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:52:56,186 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2021-05-03 22:52:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:56,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:52:56,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-05-03 22:52:56,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475764189] [2021-05-03 22:52:56,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-03 22:52:56,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:52:56,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-03 22:52:56,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-05-03 22:52:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:56,208 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:52:56,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2021-05-03 22:52:56,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:56,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:56,208 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:52:56,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:52:56,556 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:52:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:52:56,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1294911949, now seen corresponding path program 2 times [2021-05-03 22:52:56,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:52:56,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525816045] [2021-05-03 22:52:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:52:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:52:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:56,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525816045] [2021-05-03 22:52:56,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162943382] [2021-05-03 22:52:56,608 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) [2021-05-03 22:52:56,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 22:52:56,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 22:52:56,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-03 22:52:56,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:52:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:56,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:52:56,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2021-05-03 22:52:56,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212312583] [2021-05-03 22:52:56,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-03 22:52:56,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:52:56,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-03 22:52:56,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-03 22:52:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:56,710 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:52:56,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-05-03 22:52:56,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:56,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:56,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:52:56,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:56,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:52:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:52:56,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:52:56,965 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:52:56,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:52:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash 433211555, now seen corresponding path program 3 times [2021-05-03 22:52:56,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:52:56,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024013375] [2021-05-03 22:52:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:52:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:52:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:57,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024013375] [2021-05-03 22:52:57,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141427287] [2021-05-03 22:52:57,214 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 [2021-05-03 22:52:57,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-03 22:52:57,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 22:52:57,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-03 22:52:57,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:52:57,425 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:52:57,425 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 29 treesize of output 27 [2021-05-03 22:52:57,450 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:52:57,459 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:52:57,459 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:52:57,459 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:16 [2021-05-03 22:52:57,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:52:57,624 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 [2021-05-03 22:52:57,651 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-05-03 22:52:57,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:52:57,674 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:52:57,675 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:21 [2021-05-03 22:52:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:57,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:52:57,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2021-05-03 22:52:57,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780198654] [2021-05-03 22:52:57,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-03 22:52:57,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:52:57,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-03 22:52:57,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2021-05-03 22:52:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:57,740 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:52:57,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 22:52:57,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:57,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:57,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:52:57,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:52:57,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:52:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:52:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:52:58,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:52:58,629 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:52:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:52:58,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1322225280, now seen corresponding path program 4 times [2021-05-03 22:52:58,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:52:58,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496601614] [2021-05-03 22:52:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:52:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:52:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:58,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496601614] [2021-05-03 22:52:58,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736877010] [2021-05-03 22:52:58,691 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 [2021-05-03 22:52:58,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-03 22:52:58,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 22:52:58,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-03 22:52:58,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:52:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:58,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:52:58,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 8 [2021-05-03 22:52:58,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948103527] [2021-05-03 22:52:58,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 22:52:58,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:52:58,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 22:52:58,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-03 22:52:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:58,788 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:52:58,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-05-03 22:52:58,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:58,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:58,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:52:58,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:52:58,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:52:58,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:52:58,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:52:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:52:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:52:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:52:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:52:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:52:59,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:52:59,033 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:52:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:52:59,033 INFO L82 PathProgramCache]: Analyzing trace with hash -956349590, now seen corresponding path program 5 times [2021-05-03 22:52:59,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:52:59,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980515587] [2021-05-03 22:52:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:52:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:52:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:52:59,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980515587] [2021-05-03 22:52:59,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83186669] [2021-05-03 22:52:59,402 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 [2021-05-03 22:52:59,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-05-03 22:52:59,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 22:52:59,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-03 22:52:59,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:52:59,852 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:52:59,853 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 45 treesize of output 53 [2021-05-03 22:52:59,864 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:52:59,903 INFO L628 ElimStorePlain]: treesize reduction 43, result has 62.3 percent of original size [2021-05-03 22:52:59,914 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-03 22:52:59,914 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:39 [2021-05-03 22:53:00,712 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2021-05-03 22:53:00,940 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-05-03 22:53:01,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-05-03 22:53:01,049 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:01,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 1 [2021-05-03 22:53:01,064 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:01,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:01,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:01,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-05-03 22:53:01,075 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:01,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:01,082 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:53:01,082 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:147, output treesize:5 [2021-05-03 22:53:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:01,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:53:01,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 40 [2021-05-03 22:53:01,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305922015] [2021-05-03 22:53:01,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-03 22:53:01,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:53:01,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-03 22:53:01,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1470, Unknown=0, NotChecked=0, Total=1640 [2021-05-03 22:53:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:01,095 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:53:01,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 1.829268292682927) internal successors, (75), 40 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 22:53:01,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:01,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:01,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:01,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:01,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:01,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:01,095 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:02,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:53:02,401 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:53:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:53:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2001574371, now seen corresponding path program 6 times [2021-05-03 22:53:02,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:53:02,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123640597] [2021-05-03 22:53:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:53:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:53:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:02,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123640597] [2021-05-03 22:53:02,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600483580] [2021-05-03 22:53:02,976 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 [2021-05-03 22:53:03,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-03 22:53:03,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 22:53:03,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-03 22:53:03,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:53:03,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:03,551 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 61 treesize of output 87 [2021-05-03 22:53:03,563 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:03,650 INFO L628 ElimStorePlain]: treesize reduction 75, result has 63.9 percent of original size [2021-05-03 22:53:03,660 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:53:03,660 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:72, output treesize:68 [2021-05-03 22:53:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,603 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:04,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 88 [2021-05-03 22:53:04,693 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-05-03 22:53:04,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,771 INFO L354 Elim1Store]: treesize reduction 52, result has 45.3 percent of original size [2021-05-03 22:53:04,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 53 treesize of output 61 [2021-05-03 22:53:04,795 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:04,856 INFO L354 Elim1Store]: treesize reduction 50, result has 47.4 percent of original size [2021-05-03 22:53:04,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 55 treesize of output 63 [2021-05-03 22:53:04,871 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:04,966 INFO L628 ElimStorePlain]: treesize reduction 71, result has 64.0 percent of original size [2021-05-03 22:53:04,988 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-05-03 22:53:04,988 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:208, output treesize:55 [2021-05-03 22:53:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:05,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:53:05,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27] total 52 [2021-05-03 22:53:05,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078926984] [2021-05-03 22:53:05,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-03 22:53:05,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:53:05,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-03 22:53:05,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=2457, Unknown=0, NotChecked=0, Total=2756 [2021-05-03 22:53:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:05,103 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:53:05,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 52 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) [2021-05-03 22:53:05,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:05,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:05,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:05,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:05,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:05,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:05,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:05,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-03 22:53:06,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:53:06,725 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:53:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:53:06,725 INFO L82 PathProgramCache]: Analyzing trace with hash -448058012, now seen corresponding path program 7 times [2021-05-03 22:53:06,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:53:06,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643953217] [2021-05-03 22:53:06,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:53:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:53:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:07,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643953217] [2021-05-03 22:53:07,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128637890] [2021-05-03 22:53:07,557 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 [2021-05-03 22:53:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:53:07,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-03 22:53:07,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:53:08,414 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:08,415 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 77 treesize of output 129 [2021-05-03 22:53:08,426 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:08,555 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-05-03 22:53:08,556 INFO L628 ElimStorePlain]: treesize reduction 134, result has 60.6 percent of original size [2021-05-03 22:53:08,601 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. [2021-05-03 22:53:08,601 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:88, output treesize:79 [2021-05-03 22:53:09,256 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-05-03 22:53:09,257 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 55 treesize of output 19 [2021-05-03 22:53:09,258 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:09,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:09,261 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:53:09,261 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:5 [2021-05-03 22:53:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:09,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:53:09,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 32] total 62 [2021-05-03 22:53:09,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021255593] [2021-05-03 22:53:09,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-03 22:53:09,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:53:09,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-03 22:53:09,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=3498, Unknown=0, NotChecked=0, Total=3906 [2021-05-03 22:53:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:09,273 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:53:09,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 62 states have internal predecessors, (103), 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) [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-05-03 22:53:09,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-03 22:53:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-03 22:53:11,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-05-03 22:53:11,524 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:53:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:53:11,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1741222463, now seen corresponding path program 8 times [2021-05-03 22:53:11,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:53:11,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700654398] [2021-05-03 22:53:11,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:53:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:53:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:11,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700654398] [2021-05-03 22:53:11,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171307984] [2021-05-03 22:53:11,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:53:11,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-03 22:53:11,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 22:53:11,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-03 22:53:11,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:53:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:11,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:53:11,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 14 [2021-05-03 22:53:11,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576090350] [2021-05-03 22:53:11,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-03 22:53:11,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:53:11,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-03 22:53:11,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2021-05-03 22:53:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:11,747 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:53:11,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 14 states have internal predecessors, (97), 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) [2021-05-03 22:53:11,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:11,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:11,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:11,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:11,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:11,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:11,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:11,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-05-03 22:53:11,748 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-05-03 22:53:11,748 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-03 22:53:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-03 22:53:12,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:53:12,011 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:53:12,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:53:12,011 INFO L82 PathProgramCache]: Analyzing trace with hash 398350743, now seen corresponding path program 9 times [2021-05-03 22:53:12,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:53:12,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87741659] [2021-05-03 22:53:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:53:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:53:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:13,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87741659] [2021-05-03 22:53:13,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343812899] [2021-05-03 22:53:13,226 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:53:13,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-05-03 22:53:13,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 22:53:13,264 WARN L261 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-03 22:53:13,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:53:14,617 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:14,617 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 93 treesize of output 179 [2021-05-03 22:53:14,644 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:14,855 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2021-05-03 22:53:14,855 INFO L628 ElimStorePlain]: treesize reduction 168, result has 65.4 percent of original size [2021-05-03 22:53:14,890 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:53:14,890 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:104, output treesize:117 [2021-05-03 22:53:16,274 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-05-03 22:53:17,001 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-05-03 22:53:17,263 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-03 22:53:17,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-05-03 22:53:17,524 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-05-03 22:53:17,524 INFO L354 Elim1Store]: treesize reduction 52, result has 66.9 percent of original size [2021-05-03 22:53:17,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 22 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 77 treesize of output 129 [2021-05-03 22:53:17,709 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:17,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,883 INFO L354 Elim1Store]: treesize reduction 114, result has 44.4 percent of original size [2021-05-03 22:53:17,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 18 case distinctions, treesize of input 79 treesize of output 115 [2021-05-03 22:53:17,936 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:17,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:17,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,067 INFO L354 Elim1Store]: treesize reduction 104, result has 38.5 percent of original size [2021-05-03 22:53:18,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 89 [2021-05-03 22:53:18,086 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:18,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-05-03 22:53:18,184 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:18,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 11 case distinctions, treesize of input 68 treesize of output 142 [2021-05-03 22:53:19,054 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 3 xjuncts. [2021-05-03 22:53:19,316 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 64 [2021-05-03 22:53:19,316 INFO L628 ElimStorePlain]: treesize reduction 506, result has 29.4 percent of original size [2021-05-03 22:53:19,336 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-05-03 22:53:19,336 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:377, output treesize:118 [2021-05-03 22:53:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:19,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:53:19,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 39] total 78 [2021-05-03 22:53:19,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757807397] [2021-05-03 22:53:19,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-03 22:53:19,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:53:19,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-03 22:53:19,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=5589, Unknown=0, NotChecked=0, Total=6162 [2021-05-03 22:53:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:19,488 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:53:19,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 1.6455696202531647) internal successors, (130), 78 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 22:53:19,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:19,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:19,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:19,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:19,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:19,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:19,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:19,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-05-03 22:53:19,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-05-03 22:53:19,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-05-03 22:53:19,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:22,799 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-03 22:53:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-03 22:53:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-03 22:53:24,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:53:24,572 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 22:53:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 22:53:24,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1981510306, now seen corresponding path program 10 times [2021-05-03 22:53:24,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 22:53:24,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156452330] [2021-05-03 22:53:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 22:53:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 22:53:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:26,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156452330] [2021-05-03 22:53:26,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443467157] [2021-05-03 22:53:26,238 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-03 22:53:26,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-03 22:53:26,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-03 22:53:26,284 WARN L261 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-03 22:53:26,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-03 22:53:30,877 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:30,878 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 109 treesize of output 237 [2021-05-03 22:53:30,896 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:31,212 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 124 [2021-05-03 22:53:31,212 INFO L628 ElimStorePlain]: treesize reduction 294, result has 58.0 percent of original size [2021-05-03 22:53:31,326 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-03 22:53:31,327 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:120, output treesize:105 [2021-05-03 22:53:32,835 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-05-03 22:53:32,835 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 77 treesize of output 25 [2021-05-03 22:53:32,837 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-03 22:53:32,841 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 22:53:32,841 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-05-03 22:53:32,842 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:5 [2021-05-03 22:53:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 22:53:32,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-03 22:53:32,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 44] total 88 [2021-05-03 22:53:32,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427875071] [2021-05-03 22:53:32,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-03 22:53:32,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 22:53:32,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-03 22:53:32,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=7135, Unknown=0, NotChecked=0, Total=7832 [2021-05-03 22:53:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:32,855 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-05-03 22:53:32,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 1.5617977528089888) internal successors, (139), 88 states have internal predecessors, (139), 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) [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-05-03 22:53:32,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-05-03 22:53:35,587 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-03 22:53:54,259 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-05-03 22:53:54,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable746 [2021-05-03 22:53:54,461 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:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) 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.automata.partialorder.PersistentSetReduction.applyDelaySetReduction(PersistentSetReduction.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:221) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:507) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) 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.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) 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:206) ... 41 more [2021-05-03 22:53:54,465 INFO L168 Benchmark]: Toolchain (without parser) took 59333.92 ms. Allocated memory was 373.3 MB in the beginning and 539.0 MB in the end (delta: 165.7 MB). Free memory was 353.4 MB in the beginning and 355.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 166.2 MB. Max. memory is 16.0 GB. [2021-05-03 22:53:54,465 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 373.3 MB. Free memory was 354.6 MB in the beginning and 354.5 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 22:53:54,465 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.15 ms. Allocated memory is still 373.3 MB. Free memory was 353.3 MB in the beginning and 351.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-03 22:53:54,465 INFO L168 Benchmark]: Boogie Preprocessor took 13.85 ms. Allocated memory is still 373.3 MB. Free memory was 351.9 MB in the beginning and 351.0 MB in the end (delta: 926.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 22:53:54,465 INFO L168 Benchmark]: RCFGBuilder took 195.86 ms. Allocated memory is still 373.3 MB. Free memory was 350.9 MB in the beginning and 338.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-05-03 22:53:54,465 INFO L168 Benchmark]: TraceAbstraction took 59063.73 ms. Allocated memory was 373.3 MB in the beginning and 539.0 MB in the end (delta: 165.7 MB). Free memory was 337.6 MB in the beginning and 355.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 149.4 MB. Max. memory is 16.0 GB. [2021-05-03 22:53:54,465 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 0.11 ms. Allocated memory is still 373.3 MB. Free memory was 354.6 MB in the beginning and 354.5 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.15 ms. Allocated memory is still 373.3 MB. Free memory was 353.3 MB in the beginning and 351.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.85 ms. Allocated memory is still 373.3 MB. Free memory was 351.9 MB in the beginning and 351.0 MB in the end (delta: 926.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 195.86 ms. Allocated memory is still 373.3 MB. Free memory was 350.9 MB in the beginning and 338.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 59063.73 ms. Allocated memory was 373.3 MB in the beginning and 539.0 MB in the end (delta: 165.7 MB). Free memory was 337.6 MB in the beginning and 355.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 149.4 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:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...