/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-Sleep-SemanticLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-13 02:47:12,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-13 02:47:12,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-13 02:47:12,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-13 02:47:12,493 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-Sleep-SemanticLbe-Delay.epf [2021-03-13 02:47:12,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-13 02:47:12,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-13 02:47:12,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-13 02:47:12,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-13 02:47:12,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-13 02:47:12,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-13 02:47:12,509 INFO L138 SettingsManager]: * Use SBE=true [2021-03-13 02:47:12,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-13 02:47:12,510 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-13 02:47:12,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-13 02:47:12,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-13 02:47:12,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-13 02:47:12,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-13 02:47:12,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-13 02:47:12,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-13 02:47:12,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-13 02:47:12,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-13 02:47:12,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-13 02:47:12,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-13 02:47:12,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-13 02:47:12,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-13 02:47:12,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-13 02:47:12,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-13 02:47:12,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-13 02:47:12,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-13 02:47:12,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-13 02:47:12,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-13 02:47:12,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-13 02:47:12,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-13 02:47:12,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-03-13 02:47:12,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-13 02:47:12,513 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-03-13 02:47:12,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-13 02:47:12,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-13 02:47:12,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-13 02:47:12,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-13 02:47:12,803 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-13 02:47:12,805 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-13 02:47:12,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl [2021-03-13 02:47:12,806 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl' [2021-03-13 02:47:12,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-13 02:47:12,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-13 02:47:12,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-13 02:47:12,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-13 02:47:12,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-13 02:47:12,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-13 02:47:12,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-13 02:47:12,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-13 02:47:12,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-13 02:47:12,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/1) ... [2021-03-13 02:47:12,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-13 02:47:12,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-13 02:47:12,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-13 02:47:12,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-13 02:47:12,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (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 [2021-03-13 02:47:12,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-13 02:47:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-13 02:47:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-13 02:47:12,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-13 02:47:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-13 02:47:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-13 02:47:12,950 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-13 02:47:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-13 02:47:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-13 02:47:12,950 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-13 02:47:13,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-13 02:47:13,076 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-13 02:47:13,077 INFO L202 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.03 02:47:13 BoogieIcfgContainer [2021-03-13 02:47:13,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-13 02:47:13,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-13 02:47:13,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-13 02:47:13,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-13 02:47:13,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.03 02:47:12" (1/2) ... [2021-03-13 02:47:13,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc3677d and model type dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 02:47:13, skipping insertion in model container [2021-03-13 02:47:13,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.03 02:47:13" (2/2) ... [2021-03-13 02:47:13,082 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq.wvr.bpl [2021-03-13 02:47:13,085 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-13 02:47:13,086 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-13 02:47:13,088 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-13 02:47:13,088 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-13 02:47:13,114 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-13 02:47:13,125 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 [2021-03-13 02:47:13,181 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-13 02:47:13,182 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-13 02:47:13,182 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-13 02:47:13,182 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-13 02:47:13,182 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-13 02:47:13,182 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-13 02:47:13,182 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-13 02:47:13,182 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-13 02:47:13,190 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-13 02:47:13,191 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 28 transitions, 72 flow [2021-03-13 02:47:13,192 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 28 transitions, 72 flow [2021-03-13 02:47:13,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 72 flow [2021-03-13 02:47:13,208 INFO L129 PetriNetUnfolder]: 3/26 cut-off events. [2021-03-13 02:47:13,209 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-13 02:47:13,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 3/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-03-13 02:47:13,211 INFO L116 LiptonReduction]: Number of co-enabled transitions 124 [2021-03-13 02:47:13,740 INFO L131 LiptonReduction]: Checked pairs total: 171 [2021-03-13 02:47:13,740 INFO L133 LiptonReduction]: Total number of compositions: 15 [2021-03-13 02:47:13,818 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 02:47:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 02:47:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash 804708578, now seen corresponding path program 1 times [2021-03-13 02:47:13,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 02:47:13,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291601338] [2021-03-13 02:47:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 02:47:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 02:47:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:13,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291601338] [2021-03-13 02:47:13,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-13 02:47:13,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-13 02:47:13,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626923830] [2021-03-13 02:47:13,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-13 02:47:13,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 02:47:13,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-13 02:47:13,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-13 02:47:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:13,932 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 02:47:13,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-03-13 02:47:13,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:13,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-13 02:47:13,971 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 02:47:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 02:47:13,971 INFO L82 PathProgramCache]: Analyzing trace with hash -533399944, now seen corresponding path program 1 times [2021-03-13 02:47:13,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 02:47:13,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395485420] [2021-03-13 02:47:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 02:47:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 02:47:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:14,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395485420] [2021-03-13 02:47:14,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667261883] [2021-03-13 02:47:14,030 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 [2021-03-13 02:47:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 02:47:14,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-13 02:47:14,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 02:47:14,201 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 [2021-03-13 02:47:14,204 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:14,208 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 02:47:14,209 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-13 02:47:14,209 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2021-03-13 02:47:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:14,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 02:47:14,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-03-13 02:47:14,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493605594] [2021-03-13 02:47:14,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-13 02:47:14,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 02:47:14,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-13 02:47:14,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-13 02:47:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:14,256 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 02:47:14,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-03-13 02:47:14,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:14,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:14,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 02:47:14,530 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 02:47:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 02:47:14,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1513452446, now seen corresponding path program 2 times [2021-03-13 02:47:14,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 02:47:14,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510828627] [2021-03-13 02:47:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 02:47:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 02:47:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:14,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510828627] [2021-03-13 02:47:14,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280816162] [2021-03-13 02:47:14,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 02:47:14,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-13 02:47:14,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 02:47:14,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-13 02:47:14,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 02:47:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-13 02:47:14,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 02:47:14,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2021-03-13 02:47:14,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976121911] [2021-03-13 02:47:14,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-13 02:47:14,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 02:47:14,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-13 02:47:14,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-13 02:47:14,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:14,634 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 02:47:14,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-03-13 02:47:14,634 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:14,634 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:14,634 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:14,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 02:47:14,912 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 02:47:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 02:47:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1896987400, now seen corresponding path program 3 times [2021-03-13 02:47:14,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 02:47:14,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063307672] [2021-03-13 02:47:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 02:47:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 02:47:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:15,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063307672] [2021-03-13 02:47:15,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280698743] [2021-03-13 02:47:15,155 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 [2021-03-13 02:47:15,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-13 02:47:15,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 02:47:15,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core [2021-03-13 02:47:15,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 02:47:15,316 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 02:47:15,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-03-13 02:47:15,322 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:15,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 02:47:15,326 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-13 02:47:15,326 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:18 [2021-03-13 02:47:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:15,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 02:47:15,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-03-13 02:47:15,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385328587] [2021-03-13 02:47:15,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-13 02:47:15,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 02:47:15,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-13 02:47:15,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-03-13 02:47:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:15,363 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 02:47:15,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-03-13 02:47:15,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:15,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:15,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:15,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 02:47:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-13 02:47:15,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 02:47:15,747 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 02:47:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 02:47:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash -783284488, now seen corresponding path program 4 times [2021-03-13 02:47:15,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 02:47:15,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93185373] [2021-03-13 02:47:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 02:47:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 02:47:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-03-13 02:47:15,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93185373] [2021-03-13 02:47:15,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90622507] [2021-03-13 02:47:15,898 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 [2021-03-13 02:47:15,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-13 02:47:15,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 02:47:15,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 47 conjunts are in the unsatisfiable core [2021-03-13 02:47:15,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 02:47:16,488 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 02:47:16,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 86 [2021-03-13 02:47:16,501 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:16,569 INFO L628 ElimStorePlain]: treesize reduction 92, result has 58.9 percent of original size [2021-03-13 02:47:16,605 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-13 02:47:16,606 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:76, output treesize:52 [2021-03-13 02:47:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:16,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 02:47:16,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2021-03-13 02:47:16,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996840182] [2021-03-13 02:47:16,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-13 02:47:16,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 02:47:16,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-13 02:47:16,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-03-13 02:47:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:16,786 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 02:47:16,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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) [2021-03-13 02:47:16,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:16,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:16,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 02:47:16,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-13 02:47:16,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 02:47:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-13 02:47:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-13 02:47:17,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-03-13 02:47:17,579 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 02:47:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 02:47:17,580 INFO L82 PathProgramCache]: Analyzing trace with hash -334065756, now seen corresponding path program 5 times [2021-03-13 02:47:17,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 02:47:17,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148274335] [2021-03-13 02:47:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 02:47:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 02:47:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-03-13 02:47:17,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148274335] [2021-03-13 02:47:17,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241119563] [2021-03-13 02:47:17,811 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 [2021-03-13 02:47:17,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-03-13 02:47:17,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 02:47:17,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 57 conjunts are in the unsatisfiable core [2021-03-13 02:47:17,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 02:47:18,333 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 02:47:18,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 126 [2021-03-13 02:47:18,349 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:18,498 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2021-03-13 02:47:18,498 INFO L628 ElimStorePlain]: treesize reduction 115, result has 67.1 percent of original size [2021-03-13 02:47:18,532 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. [2021-03-13 02:47:18,532 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:90, output treesize:104 [2021-03-13 02:47:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:18,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 02:47:18,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 23 [2021-03-13 02:47:18,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070149193] [2021-03-13 02:47:18,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-13 02:47:18,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 02:47:18,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-13 02:47:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-03-13 02:47:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:18,888 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 02:47:18,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2021-03-13 02:47:18,889 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:18,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:18,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 02:47:18,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-13 02:47:18,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-13 02:47:18,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-13 02:47:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-13 02:47:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-13 02:47:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-13 02:47:19,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 02:47:19,891 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-13 02:47:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-13 02:47:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1981567196, now seen corresponding path program 6 times [2021-03-13 02:47:19,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-13 02:47:19,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008919568] [2021-03-13 02:47:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-13 02:47:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-13 02:47:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-03-13 02:47:20,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008919568] [2021-03-13 02:47:20,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392683464] [2021-03-13 02:47:20,202 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 [2021-03-13 02:47:20,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-03-13 02:47:20,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-13 02:47:20,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 70 conjunts are in the unsatisfiable core [2021-03-13 02:47:20,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-13 02:47:21,162 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-03-13 02:47:22,099 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-03-13 02:47:24,302 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 72 [2021-03-13 02:47:37,280 WARN L205 SmtUtils]: Spent 6.39 s on a formula simplification that was a NOOP. DAG size: 74 [2021-03-13 02:47:37,432 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 02:47:37,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 176 [2021-03-13 02:47:37,459 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:37,531 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-13 02:47:37,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 176 [2021-03-13 02:47:37,546 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:37,986 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 164 [2021-03-13 02:47:37,987 INFO L628 ElimStorePlain]: treesize reduction 379, result has 61.7 percent of original size [2021-03-13 02:47:38,100 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2021-03-13 02:47:38,100 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 15 variables, input treesize:207, output treesize:209 [2021-03-13 02:47:38,427 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-03-13 02:47:38,693 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-03-13 02:47:39,003 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-03-13 02:47:39,235 INFO L446 ElimStorePlain]: Different costs {10=[v_prenex_25], 21=[v_prenex_14, v_prenex_13, v_prenex_23, v_prenex_22, v_prenex_28, v_prenex_16, v_prenex_15], 28=[v_prenex_19, v_prenex_21, v_prenex_24], 36=[v_prenex_20, queue], 45=[v_prenex_12]} [2021-03-13 02:47:39,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 13 [2021-03-13 02:47:39,255 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:39,658 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 174 [2021-03-13 02:47:39,659 INFO L628 ElimStorePlain]: treesize reduction 291, result has 68.8 percent of original size [2021-03-13 02:47:39,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,730 INFO L354 Elim1Store]: treesize reduction 62, result has 37.4 percent of original size [2021-03-13 02:47:39,730 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 54 treesize of output 52 [2021-03-13 02:47:39,735 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:39,921 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 102 [2021-03-13 02:47:39,922 INFO L628 ElimStorePlain]: treesize reduction 305, result has 50.2 percent of original size [2021-03-13 02:47:39,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:39,965 INFO L354 Elim1Store]: treesize reduction 32, result has 47.5 percent of original size [2021-03-13 02:47:39,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 44 [2021-03-13 02:47:39,984 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:40,076 INFO L628 ElimStorePlain]: treesize reduction 97, result has 63.4 percent of original size [2021-03-13 02:47:40,077 INFO L518 ElimStorePlain]: Eliminatee v_prenex_23 vanished before elimination [2021-03-13 02:47:40,077 INFO L518 ElimStorePlain]: Eliminatee v_prenex_22 vanished before elimination [2021-03-13 02:47:40,077 INFO L518 ElimStorePlain]: Eliminatee v_prenex_28 vanished before elimination [2021-03-13 02:47:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-13 02:47:40,105 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-03-13 02:47:40,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 27 [2021-03-13 02:47:40,107 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-03-13 02:47:40,130 INFO L628 ElimStorePlain]: treesize reduction 98, result has 17.6 percent of original size [2021-03-13 02:47:40,131 INFO L518 ElimStorePlain]: Eliminatee v_prenex_15 vanished before elimination [2021-03-13 02:47:40,131 INFO L518 ElimStorePlain]: Eliminatee v_prenex_19 vanished before elimination [2021-03-13 02:47:40,131 INFO L518 ElimStorePlain]: Eliminatee v_prenex_21 vanished before elimination [2021-03-13 02:47:40,131 INFO L518 ElimStorePlain]: Eliminatee v_prenex_24 vanished before elimination [2021-03-13 02:47:40,131 INFO L518 ElimStorePlain]: Eliminatee v_prenex_20 vanished before elimination [2021-03-13 02:47:40,131 INFO L518 ElimStorePlain]: Eliminatee queue vanished before elimination [2021-03-13 02:47:40,131 INFO L518 ElimStorePlain]: Eliminatee v_prenex_12 vanished before elimination [2021-03-13 02:47:40,132 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-03-13 02:47:40,132 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 21 variables, input treesize:977, output treesize:15 [2021-03-13 02:47:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 63 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-13 02:47:40,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-13 02:47:40,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2021-03-13 02:47:40,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377640249] [2021-03-13 02:47:40,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-13 02:47:40,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-13 02:47:40,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-13 02:47:40,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=920, Unknown=2, NotChecked=0, Total=1056 [2021-03-13 02:47:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:40,172 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-13 02:47:40,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 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) [2021-03-13 02:47:40,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-03-13 02:47:40,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-03-13 02:47:40,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-13 02:47:40,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-03-13 02:47:40,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-03-13 02:47:40,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-03-13 02:47:40,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-13 02:47:44,408 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2021-03-13 02:47:47,498 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-03-13 02:48:05,450 WARN L205 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2021-03-13 02:48:10,105 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2021-03-13 02:48:13,546 WARN L205 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2021-03-13 02:48:19,100 WARN L205 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2021-03-13 02:48:41,406 WARN L205 SmtUtils]: Spent 21.47 s on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2021-03-13 02:48:47,338 WARN L205 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-03-13 02:49:00,249 WARN L205 SmtUtils]: Spent 11.55 s on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2021-03-13 02:49:05,554 WARN L205 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-03-13 02:49:08,916 WARN L205 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2021-03-13 02:49:38,888 WARN L205 SmtUtils]: Spent 27.27 s on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2021-03-13 02:50:06,585 WARN L205 SmtUtils]: Spent 27.33 s on a formula simplification. DAG size of input: 124 DAG size of output: 56 [2021-03-13 02:50:10,477 WARN L205 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2021-03-13 02:50:37,213 WARN L205 SmtUtils]: Spent 26.62 s on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2021-03-13 02:50:47,998 WARN L205 SmtUtils]: Spent 7.47 s on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-03-13 02:51:12,565 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-03-13 02:51:12,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-13 02:51:12,786 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.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:173) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) 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:182) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetDelayReduction.(SleepSetDelayReduction.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:195) 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) ... 48 more [2021-03-13 02:51:12,789 INFO L168 Benchmark]: Toolchain (without parser) took 239933.40 ms. Allocated memory was 364.9 MB in the beginning and 478.2 MB in the end (delta: 113.2 MB). Free memory was 345.3 MB in the beginning and 259.4 MB in the end (delta: 85.8 MB). Peak memory consumption was 199.7 MB. Max. memory is 16.0 GB. [2021-03-13 02:51:12,789 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 364.9 MB. Free memory was 346.5 MB in the beginning and 346.4 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-13 02:51:12,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.23 ms. Allocated memory is still 364.9 MB. Free memory was 344.7 MB in the beginning and 343.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-13 02:51:12,789 INFO L168 Benchmark]: Boogie Preprocessor took 10.71 ms. Allocated memory is still 364.9 MB. Free memory was 343.3 MB in the beginning and 342.4 MB in the end (delta: 933.0 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-13 02:51:12,789 INFO L168 Benchmark]: RCFGBuilder took 189.38 ms. Allocated memory is still 364.9 MB. Free memory was 342.3 MB in the beginning and 329.6 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-13 02:51:12,789 INFO L168 Benchmark]: TraceAbstraction took 239709.74 ms. Allocated memory was 364.9 MB in the beginning and 478.2 MB in the end (delta: 113.2 MB). Free memory was 329.2 MB in the beginning and 259.4 MB in the end (delta: 69.7 MB). Peak memory consumption was 182.9 MB. Max. memory is 16.0 GB. [2021-03-13 02:51:12,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 364.9 MB. Free memory was 346.5 MB in the beginning and 346.4 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.23 ms. Allocated memory is still 364.9 MB. Free memory was 344.7 MB in the beginning and 343.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.71 ms. Allocated memory is still 364.9 MB. Free memory was 343.3 MB in the beginning and 342.4 MB in the end (delta: 933.0 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 189.38 ms. Allocated memory is still 364.9 MB. Free memory was 342.3 MB in the beginning and 329.6 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 239709.74 ms. Allocated memory was 364.9 MB in the beginning and 478.2 MB in the end (delta: 113.2 MB). Free memory was 329.2 MB in the beginning and 259.4 MB in the end (delta: 69.7 MB). Peak memory consumption was 182.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 547.6ms, 32 PlacesBefore, 20 PlacesAfterwards, 28 TransitionsBefore, 16 TransitionsAfterwards, 124 CoEnabledTransitionPairs, 3 FixpointIterations, 6 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 15 TotalNumberOfCompositions, 171 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 145, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 92, positive: 84, positive conditional: 0, positive unconditional: 84, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 92, positive: 78, positive conditional: 0, positive unconditional: 78, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 145, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 92, unknown conditional: 0, unknown unconditional: 92] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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...