/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Symm.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 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 21:27:00,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 21:27:00,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 21:27:00,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-16 21:27:00,821 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-NewStatesSleep-NoLbe-Symm.epf [2021-06-16 21:27:00,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 21:27:00,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 21:27:00,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-16 21:27:00,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-16 21:27:00,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 21:27:00,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 21:27:00,853 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 21:27:00,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 21:27:00,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 21:27:00,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 21:27:00,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 21:27:00,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 21:27:00,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 21:27:00,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 21:27:00,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 21:27:00,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 21:27:00,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 21:27:00,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 21:27:00,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 21:27:00,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 21:27:00,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 21:27:00,857 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 21:27:00,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-16 21:27:00,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 21:27:00,857 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-16 21:27:00,857 INFO L138 SettingsManager]: * Limit POR to symmetric independence in concurrent analysis=true [2021-06-16 21:27:00,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 21:27:01,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 21:27:01,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 21:27:01,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 21:27:01,111 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 21:27:01,112 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 21:27:01,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl [2021-06-16 21:27:01,112 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl' [2021-06-16 21:27:01,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 21:27:01,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 21:27:01,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 21:27:01,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 21:27:01,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 21:27:01,146 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,151 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 21:27:01,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 21:27:01,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 21:27:01,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 21:27:01,163 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,164 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,165 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,165 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,166 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,168 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,169 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 16.06 09:27:01" (1/1) ... [2021-06-16 21:27:01,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 21:27:01,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 21:27:01,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 21:27:01,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 21:27:01,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:27:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 21:27:01,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 21:27:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 21:27:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 21:27:01,224 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 21:27:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 21:27:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 21:27:01,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 21:27:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 21:27:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 21:27:01,226 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 21:27:01,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 21:27:01,375 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 21:27:01,377 INFO L202 PluginConnector]: Adding new model dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 09:27:01 BoogieIcfgContainer [2021-06-16 21:27:01,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 21:27:01,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 21:27:01,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 21:27:01,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 21:27:01,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 09:27:01" (1/2) ... [2021-06-16 21:27:01,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5583f5fc and model type dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 09:27:01, skipping insertion in model container [2021-06-16 21:27:01,381 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 16.06 09:27:01" (2/2) ... [2021-06-16 21:27:01,382 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq-array.wvr.bpl [2021-06-16 21:27:01,386 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 21:27:01,386 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 21:27:01,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 21:27:01,387 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 21:27:01,423 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-16 21:27:01,438 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-16 21:27:01,486 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 21:27:01,486 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 21:27:01,486 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 21:27:01,486 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 21:27:01,486 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 21:27:01,487 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 21:27:01,487 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 21:27:01,487 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 21:27:01,584 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:27:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:27:01,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2056057418, now seen corresponding path program 1 times [2021-06-16 21:27:01,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:27:01,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681012769] [2021-06-16 21:27:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:27:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:27:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-16 21:27:01,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:27:01,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681012769] [2021-06-16 21:27:01,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681012769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:01,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257496228] [2021-06-16 21:27:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:27:01,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-16 21:27:01,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:27:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-16 21:27:02,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257496228] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 21:27:02,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-16 21:27:02,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-06-16 21:27:02,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801313262] [2021-06-16 21:27:02,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 21:27:02,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:27:02,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 21:27:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 21:27:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:02,044 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:27:02,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 21:27:02,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:02,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-16 21:27:02,324 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:27:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:27:02,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1693716897, now seen corresponding path program 2 times [2021-06-16 21:27:02,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:27:02,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37448920] [2021-06-16 21:27:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:27:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:27:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:27:02,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:27:02,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37448920] [2021-06-16 21:27:02,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37448920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:02,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172760310] [2021-06-16 21:27:02,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:02,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 21:27:02,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:27:02,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-16 21:27:02,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:27:03,485 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:27:03,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-06-16 21:27:03,496 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:27:03,504 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:27:03,508 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-16 21:27:03,509 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:26 [2021-06-16 21:27:03,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:03,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:03,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:27:03,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:27:03,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-06-16 21:27:03,600 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:27:03,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:27:03,612 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 21:27:03,612 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:5 [2021-06-16 21:27:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:27:03,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172760310] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:03,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:27:03,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 26 [2021-06-16 21:27:03,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455369528] [2021-06-16 21:27:03,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-16 21:27:03,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:27:03,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-16 21:27:03,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2021-06-16 21:27:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:03,635 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:27:03,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 21:27:03,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:03,635 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:03,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:27:04,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:04,189 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:27:04,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:27:04,190 INFO L82 PathProgramCache]: Analyzing trace with hash 197354512, now seen corresponding path program 3 times [2021-06-16 21:27:04,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:27:04,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653356182] [2021-06-16 21:27:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:27:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:27:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-16 21:27:04,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:27:04,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653356182] [2021-06-16 21:27:04,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653356182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:04,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043189646] [2021-06-16 21:27:04,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:04,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-16 21:27:04,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:27:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-16 21:27:04,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:27:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-16 21:27:04,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043189646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:04,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:27:04,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-06-16 21:27:04,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631548646] [2021-06-16 21:27:04,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 21:27:04,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:27:04,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 21:27:04,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-06-16 21:27:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:04,338 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:27:04,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 21:27:04,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:04,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:27:04,339 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:27:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:27:04,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:04,593 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:27:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:27:04,594 INFO L82 PathProgramCache]: Analyzing trace with hash 118040121, now seen corresponding path program 4 times [2021-06-16 21:27:04,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:27:04,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262542132] [2021-06-16 21:27:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:27:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:27:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:27:05,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:27:05,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262542132] [2021-06-16 21:27:05,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262542132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:05,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009393545] [2021-06-16 21:27:05,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:05,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-16 21:27:05,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:27:05,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 47 conjunts are in the unsatisfiable core [2021-06-16 21:27:05,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:27:06,369 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:27:06,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 86 [2021-06-16 21:27:06,385 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:27:06,458 INFO L628 ElimStorePlain]: treesize reduction 57, result has 72.3 percent of original size [2021-06-16 21:27:06,480 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-16 21:27:06,480 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:76, output treesize:76 [2021-06-16 21:27:07,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:07,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:07,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:07,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:07,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:27:07,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:07,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:27:07,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:07,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:07,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-16 21:27:07,091 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:27:07,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:27:07,098 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-16 21:27:07,098 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:5 [2021-06-16 21:27:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:27:07,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009393545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:07,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:27:07,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26] total 50 [2021-06-16 21:27:07,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834809831] [2021-06-16 21:27:07,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-06-16 21:27:07,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:27:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-06-16 21:27:07,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2276, Unknown=0, NotChecked=0, Total=2550 [2021-06-16 21:27:07,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:07,110 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:27:07,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 50 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 21:27:07,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:07,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:27:07,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:27:07,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:27:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:27:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:27:08,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-16 21:27:08,142 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:27:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:27:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash 675770793, now seen corresponding path program 5 times [2021-06-16 21:27:08,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:27:08,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816815871] [2021-06-16 21:27:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:27:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:27:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 62 proven. 64 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-16 21:27:08,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:27:08,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816815871] [2021-06-16 21:27:08,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816815871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:08,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182670885] [2021-06-16 21:27:08,213 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:08,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-16 21:27:08,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:27:08,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-16 21:27:08,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:27:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 81 proven. 45 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-16 21:27:08,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182670885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:08,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:27:08,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-06-16 21:27:08,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209896741] [2021-06-16 21:27:08,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 21:27:08,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:27:08,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 21:27:08,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-16 21:27:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:08,417 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:27:08,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 21:27:08,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:08,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:27:08,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:27:08,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:27:08,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:27:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:27:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:27:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:27:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:27:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:27:08,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:08,673 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:27:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:27:08,673 INFO L82 PathProgramCache]: Analyzing trace with hash 2004357023, now seen corresponding path program 6 times [2021-06-16 21:27:08,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:27:08,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766178826] [2021-06-16 21:27:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:27:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:27:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:27:09,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:27:09,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766178826] [2021-06-16 21:27:09,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766178826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:27:09,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205333389] [2021-06-16 21:27:09,869 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:27:09,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-16 21:27:09,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:27:09,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 70 conjunts are in the unsatisfiable core [2021-06-16 21:27:09,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:27:15,566 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:27:15,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 176 [2021-06-16 21:27:15,582 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-16 21:27:15,809 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2021-06-16 21:27:15,810 INFO L628 ElimStorePlain]: treesize reduction 184, result has 63.2 percent of original size [2021-06-16 21:27:15,862 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-16 21:27:15,862 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:102, output treesize:109 [2021-06-16 21:27:20,493 WARN L205 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-06-16 21:27:25,659 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 40 [2021-06-16 21:27:26,896 WARN L205 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-06-16 21:27:26,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:26,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:27,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:27,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:27,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:27,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:27,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:27,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:27,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:27:27,181 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-16 21:27:27,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 21:27:27,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 64 treesize of output 230 [2021-06-16 21:27:28,409 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 343 [2021-06-16 21:27:28,694 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 374 [2021-06-16 21:27:29,094 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 406 [2021-06-16 21:27:29,927 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 498 DAG size of output: 511 [2021-06-16 21:27:30,657 WARN L205 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 498 DAG size of output: 511 [2021-06-16 21:27:31,377 WARN L205 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 506 DAG size of output: 519 [2021-06-16 21:27:32,265 WARN L205 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 521 DAG size of output: 779 [2021-06-16 21:27:33,135 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 241 [2021-06-16 21:27:34,275 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 327 [2021-06-16 21:27:34,549 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 431 DAG size of output: 420 [2021-06-16 21:27:35,128 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 235 [2021-06-16 21:27:35,692 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 575 [2021-06-16 21:27:36,422 WARN L205 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 650 DAG size of output: 649 [2021-06-16 21:27:37,725 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 736 DAG size of output: 743 [2021-06-16 21:27:37,985 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 242 [2021-06-16 21:27:39,332 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 269 [2021-06-16 21:27:39,651 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 333 [2021-06-16 21:27:40,238 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 474 DAG size of output: 447 [2021-06-16 21:27:40,951 WARN L205 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 561 DAG size of output: 526 [2021-06-16 21:27:41,909 WARN L205 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 638 DAG size of output: 607 [2021-06-16 21:27:44,264 WARN L205 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1245 [2021-06-16 21:27:47,645 WARN L205 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 1470 DAG size of output: 1445 [2021-06-16 21:27:51,407 WARN L205 SmtUtils]: Spent 3.76 s on a formula simplification. DAG size of input: 1470 DAG size of output: 1445 [2021-06-16 21:27:55,302 WARN L205 SmtUtils]: Spent 3.88 s on a formula simplification. DAG size of input: 1474 DAG size of output: 1449 [2021-06-16 21:28:02,837 WARN L205 SmtUtils]: Spent 7.53 s on a formula simplification. DAG size of input: 1451 DAG size of output: 2162 [2021-06-16 21:28:03,009 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 1324 [2021-06-16 21:28:03,263 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 1147 DAG size of output: 1147 [2021-06-16 21:28:04,625 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 205 [2021-06-16 21:28:04,876 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 257 [2021-06-16 21:28:05,524 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 182 [2021-06-16 21:28:05,992 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 392 DAG size of output: 360 [2021-06-16 21:28:06,738 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 470 [2021-06-16 21:28:07,339 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 204 [2021-06-16 21:28:08,397 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 699 DAG size of output: 603 [2021-06-16 21:28:09,464 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 244 [2021-06-16 21:28:10,283 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 193 [2021-06-16 21:28:10,461 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 255 [2021-06-16 21:28:11,150 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 314 [2021-06-16 21:28:11,529 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 586 DAG size of output: 508 [2021-06-16 21:28:12,083 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 274 [2021-06-16 21:28:12,714 WARN L205 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 782 DAG size of output: 682 [2021-06-16 21:28:13,796 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 921 DAG size of output: 780 [2021-06-16 21:28:14,233 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 184 [2021-06-16 21:28:17,108 WARN L205 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 1677 DAG size of output: 1413 [2021-06-16 21:28:17,499 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 143 [2021-06-16 21:28:18,023 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 258 [2021-06-16 21:28:18,488 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 409 DAG size of output: 329 [2021-06-16 21:28:18,803 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 468 DAG size of output: 369 [2021-06-16 21:28:19,301 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 184 [2021-06-16 21:28:19,845 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 642 DAG size of output: 509 [2021-06-16 21:28:23,965 WARN L205 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 1998 DAG size of output: 1665 [2021-06-16 21:28:31,431 WARN L205 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 2749 DAG size of output: 2316 [2021-06-16 21:28:38,326 WARN L205 SmtUtils]: Spent 6.88 s on a formula simplification. DAG size of input: 2749 DAG size of output: 2316 [2021-06-16 21:28:44,998 WARN L205 SmtUtils]: Spent 6.66 s on a formula simplification. DAG size of input: 2751 DAG size of output: 2290 [2021-06-16 21:28:45,198 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 903 DAG size of output: 903 [2021-06-16 21:28:45,705 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 170 [2021-06-16 21:28:49,858 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 136 [2021-06-16 21:28:50,093 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 481 DAG size of output: 166 [2021-06-16 21:28:50,387 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 1652 [2021-06-16 21:28:52,381 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 1408 [2021-06-16 21:28:52,717 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 176 [2021-06-16 21:28:54,334 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 305 [2021-06-16 21:28:55,024 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 93 [2021-06-16 21:28:57,399 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 671 DAG size of output: 166 [2021-06-16 21:28:57,620 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 825 DAG size of output: 227 [2021-06-16 21:28:58,098 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 1135 DAG size of output: 301 [2021-06-16 21:28:58,582 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 1135 DAG size of output: 301 [2021-06-16 21:28:59,149 WARN L205 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 1135 DAG size of output: 301 [2021-06-16 21:28:59,168 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 8 xjuncts. [2021-06-16 21:28:59,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-16 21:28:59,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-16 21:28:59,416 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-06-16 21:28:59,417 INFO L354 Elim1Store]: treesize reduction 18, result has 91.4 percent of original size [2021-06-16 21:28:59,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 73 treesize of output 215 [2021-06-16 21:29:00,382 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 273 [2021-06-16 21:29:00,980 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 363 [2021-06-16 21:29:01,645 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 434 DAG size of output: 445 [2021-06-16 21:29:02,133 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 434 DAG size of output: 445 [2021-06-16 21:29:02,636 WARN L205 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 439 DAG size of output: 382 [2021-06-16 21:29:03,517 WARN L205 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 535 [2021-06-16 21:29:04,146 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 266 [2021-06-16 21:29:04,598 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 354 [2021-06-16 21:29:05,059 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 242 [2021-06-16 21:29:05,604 WARN L205 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 512 [2021-06-16 21:29:06,486 WARN L205 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 728 DAG size of output: 671 [2021-06-16 21:29:07,352 WARN L205 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 728 DAG size of output: 671 [2021-06-16 21:29:08,540 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 733 DAG size of output: 676 [2021-06-16 21:29:09,388 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 173 [2021-06-16 21:29:09,661 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 194 [2021-06-16 21:29:09,811 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 341 [2021-06-16 21:29:10,584 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 271 [2021-06-16 21:29:11,048 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 447 DAG size of output: 372 [2021-06-16 21:29:11,405 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 533 DAG size of output: 423 [2021-06-16 21:29:11,894 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 309 [2021-06-16 21:29:12,290 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 212 [2021-06-16 21:29:12,541 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 475 DAG size of output: 321 [2021-06-16 21:29:13,277 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 642 DAG size of output: 430 [2021-06-16 21:29:14,220 WARN L205 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 1073 DAG size of output: 771 [2021-06-16 21:29:15,572 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1378 DAG size of output: 902 [2021-06-16 21:29:16,939 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1378 DAG size of output: 902 [2021-06-16 21:29:19,557 WARN L205 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 1386 DAG size of output: 1350 [2021-06-16 21:29:20,965 WARN L205 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 814 DAG size of output: 544 [2021-06-16 21:29:21,615 WARN L205 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 819 DAG size of output: 549 [2021-06-16 21:29:22,252 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 819 DAG size of output: 549 [2021-06-16 21:29:22,302 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-16 21:29:24,183 WARN L205 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 843 DAG size of output: 62 [2021-06-16 21:29:24,183 INFO L628 ElimStorePlain]: treesize reduction 13242, result has 1.1 percent of original size [2021-06-16 21:29:24,213 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-16 21:29:24,214 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:167, output treesize:79 [2021-06-16 21:29:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 5 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:29:24,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205333389] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:29:24,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:29:24,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 39] total 77 [2021-06-16 21:29:24,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104033798] [2021-06-16 21:29:24,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-06-16 21:29:24,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:29:24,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-06-16 21:29:24,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=5479, Unknown=1, NotChecked=0, Total=6006 [2021-06-16 21:29:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:29:24,359 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:29:24,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 77 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 21:29:24,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:29:24,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:29:24,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:29:24,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:29:24,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:29:24,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:29:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:29:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:29:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:29:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:29:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:29:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:29:27,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-16 21:29:27,605 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:29:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:29:27,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2093882198, now seen corresponding path program 7 times [2021-06-16 21:29:27,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:29:27,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18119717] [2021-06-16 21:29:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:29:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:29:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 155 proven. 154 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-06-16 21:29:27,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:29:27,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18119717] [2021-06-16 21:29:27,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18119717] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:29:27,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821116022] [2021-06-16 21:29:27,664 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:29:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:29:27,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-16 21:29:27,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:29:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 183 proven. 126 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-06-16 21:29:27,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821116022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:29:27,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 21:29:27,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-06-16 21:29:27,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225773774] [2021-06-16 21:29:27,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 21:29:27,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 21:29:27,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 21:29:27,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-16 21:29:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:29:27,833 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 21:29:27,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 21:29:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:29:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:29:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:29:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:29:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:29:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:29:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 21:29:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 21:29:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 21:29:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 21:29:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 21:29:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 21:29:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-16 21:29:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 21:29:28,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8306,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:29:28,097 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 21:29:28,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 21:29:28,097 INFO L82 PathProgramCache]: Analyzing trace with hash -54910843, now seen corresponding path program 8 times [2021-06-16 21:29:28,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 21:29:28,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424869125] [2021-06-16 21:29:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 21:29:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 21:29:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 21:29:30,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 21:29:30,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424869125] [2021-06-16 21:29:30,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424869125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 21:29:30,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434141575] [2021-06-16 21:29:30,036 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 [2021-06-16 21:29:30,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 21:29:30,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 21:29:30,081 WARN L261 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 94 conjunts are in the unsatisfiable core [2021-06-16 21:29:30,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 21:30:23,097 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-16 21:31:40,364 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-06-16 21:31:40,365 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-06-16 21:31:40,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8307,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 21:31:40,566 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:561) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:363) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:238) ... 46 more [2021-06-16 21:31:40,570 INFO L168 Benchmark]: Toolchain (without parser) took 279433.33 ms. Allocated memory was 177.2 MB in the beginning and 791.7 MB in the end (delta: 614.5 MB). Free memory was 156.6 MB in the beginning and 500.1 MB in the end (delta: -343.5 MB). Peak memory consumption was 272.6 MB. Max. memory is 8.0 GB. [2021-06-16 21:31:40,570 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 177.2 MB. Free memory is still 157.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 21:31:40,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.24 ms. Allocated memory is still 177.2 MB. Free memory was 156.4 MB in the beginning and 155.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 21:31:40,570 INFO L168 Benchmark]: Boogie Preprocessor took 11.93 ms. Allocated memory is still 177.2 MB. Free memory was 155.1 MB in the beginning and 154.1 MB in the end (delta: 984.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 21:31:40,570 INFO L168 Benchmark]: RCFGBuilder took 206.75 ms. Allocated memory is still 177.2 MB. Free memory was 154.0 MB in the beginning and 140.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-16 21:31:40,570 INFO L168 Benchmark]: TraceAbstraction took 279191.18 ms. Allocated memory was 177.2 MB in the beginning and 791.7 MB in the end (delta: 614.5 MB). Free memory was 140.5 MB in the beginning and 500.1 MB in the end (delta: -359.6 MB). Peak memory consumption was 256.8 MB. Max. memory is 8.0 GB. [2021-06-16 21:31:40,570 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 177.2 MB. Free memory is still 157.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.24 ms. Allocated memory is still 177.2 MB. Free memory was 156.4 MB in the beginning and 155.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.93 ms. Allocated memory is still 177.2 MB. Free memory was 155.1 MB in the beginning and 154.1 MB in the end (delta: 984.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 206.75 ms. Allocated memory is still 177.2 MB. Free memory was 154.0 MB in the beginning and 140.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 279191.18 ms. Allocated memory was 177.2 MB in the beginning and 791.7 MB in the end (delta: 614.5 MB). Free memory was 140.5 MB in the beginning and 500.1 MB in the end (delta: -359.6 MB). Peak memory consumption was 256.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...