/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-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/mts.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 19:20:40,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 19:20:40,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 19:20:40,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 19:20:40,840 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-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-07-14 19:20:40,874 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 19:20:40,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 19:20:40,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 19:20:40,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 19:20:40,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 19:20:40,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 19:20:40,877 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 19:20:40,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 19:20:40,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 19:20:40,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 19:20:40,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 19:20:40,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 19:20:40,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 19:20:40,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 19:20:40,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 19:20:40,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 19:20:40,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 19:20:40,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 19:20:40,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 19:20:40,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 19:20:40,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 19:20:40,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 19:20:40,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 19:20:40,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 19:20:40,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 19:20:40,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 19:20:40,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 19:20:40,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 19:20:40,880 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 19:20:40,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 19:20:40,880 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 19:20:40,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 19:20:40,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 19:20:40,881 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 19:20:40,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 19:20:41,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 19:20:41,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 19:20:41,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 19:20:41,163 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 19:20:41,164 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 19:20:41,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/mts.wvr.bpl [2021-07-14 19:20:41,165 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/mts.wvr.bpl' [2021-07-14 19:20:41,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 19:20:41,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 19:20:41,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 19:20:41,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 19:20:41,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 19:20:41,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 19:20:41,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 19:20:41,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 19:20:41,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 19:20:41,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/1) ... [2021-07-14 19:20:41,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 19:20:41,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 19:20:41,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 19:20:41,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 19:20:41,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (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 [2021-07-14 19:20:41,332 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 19:20:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 19:20:41,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 19:20:41,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 19:20:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 19:20:41,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 19:20:41,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 19:20:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 19:20:41,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 19:20:41,334 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 19:20:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 19:20:41,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 19:20:41,334 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 19:20:41,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 19:20:41,466 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 19:20:41,467 INFO L202 PluginConnector]: Adding new model mts.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:20:41 BoogieIcfgContainer [2021-07-14 19:20:41,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 19:20:41,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 19:20:41,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 19:20:41,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 19:20:41,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:20:41" (1/2) ... [2021-07-14 19:20:41,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5446a5cc and model type mts.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:20:41, skipping insertion in model container [2021-07-14 19:20:41,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mts.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:20:41" (2/2) ... [2021-07-14 19:20:41,472 INFO L111 eAbstractionObserver]: Analyzing ICFG mts.wvr.bpl [2021-07-14 19:20:41,475 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 19:20:41,475 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 19:20:41,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 19:20:41,479 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 19:20:41,502 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 19:20:41,516 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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) [2021-07-14 19:20:41,578 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 19:20:41,578 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 19:20:41,578 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 19:20:41,579 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 19:20:41,579 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 19:20:41,579 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 19:20:41,579 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 19:20:41,579 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 19:20:41,637 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:20:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:20:41,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1549976021, now seen corresponding path program 1 times [2021-07-14 19:20:41,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:20:41,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233813466] [2021-07-14 19:20:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:20:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:20:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-14 19:20:41,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:20:41,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233813466] [2021-07-14 19:20:41,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233813466] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:20:41,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542972092] [2021-07-14 19:20:41,790 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 [2021-07-14 19:20:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:20:41,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-07-14 19:20:41,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:20:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-07-14 19:20:41,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542972092] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:20:41,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:20:41,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-07-14 19:20:41,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254630982] [2021-07-14 19:20:41,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 19:20:41,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:20:41,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 19:20:41,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-14 19:20:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:20:41,997 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:20:41,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:20:41,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:20:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:20:42,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 19:20:42,287 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:20:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:20:42,288 INFO L82 PathProgramCache]: Analyzing trace with hash 213809933, now seen corresponding path program 2 times [2021-07-14 19:20:42,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:20:42,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294150000] [2021-07-14 19:20:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:20:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:20:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:20:42,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:20:42,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294150000] [2021-07-14 19:20:42,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294150000] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:20:42,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42861543] [2021-07-14 19:20:42,434 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 [2021-07-14 19:20:42,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 19:20:42,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:20:42,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 19:20:42,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:20:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 19:20:42,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42861543] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:20:42,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:20:42,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 19:20:42,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843402877] [2021-07-14 19:20:42,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 19:20:42,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:20:42,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 19:20:42,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 19:20:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:20:42,622 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:20:42,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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) [2021-07-14 19:20:42,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:20:42,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:20:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:20:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:20:42,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:20:42,929 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:20:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:20:42,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1299970193, now seen corresponding path program 3 times [2021-07-14 19:20:42,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:20:42,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776595040] [2021-07-14 19:20:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:20:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:20:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:20:42,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:20:42,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776595040] [2021-07-14 19:20:42,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776595040] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:20:42,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098021306] [2021-07-14 19:20:42,993 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 [2021-07-14 19:20:43,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-14 19:20:43,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:20:43,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-14 19:20:43,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:20:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:20:43,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098021306] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:20:43,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:20:43,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-07-14 19:20:43,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31365959] [2021-07-14 19:20:43,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-14 19:20:43,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:20:43,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-14 19:20:43,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-07-14 19:20:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:20:43,152 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:20:43,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:20:43,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:20:43,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:20:43,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:20:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:20:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:20:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:20:43,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:20:43,489 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:20:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:20:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash -48757935, now seen corresponding path program 4 times [2021-07-14 19:20:43,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:20:43,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958698877] [2021-07-14 19:20:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:20:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:20:44,541 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2021-07-14 19:20:44,852 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 104 [2021-07-14 19:20:45,114 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 99 [2021-07-14 19:20:45,301 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2021-07-14 19:20:45,487 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2021-07-14 19:20:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:20:45,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:20:45,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958698877] [2021-07-14 19:20:45,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958698877] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:20:45,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498272548] [2021-07-14 19:20:45,738 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 [2021-07-14 19:20:45,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 19:20:45,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:20:45,775 WARN L261 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 46 conjunts are in the unsatisfiable core [2021-07-14 19:20:45,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:20:46,753 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-07-14 19:20:47,371 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-07-14 19:20:48,319 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-07-14 19:20:50,075 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 232 [2021-07-14 19:20:51,897 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 701 [2021-07-14 19:20:54,147 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 539 DAG size of output: 299 [2021-07-14 19:20:54,804 INFO L446 ElimStorePlain]: Different costs {7=[v_prenex_71, v_prenex_70, v_prenex_65, v_prenex_75, v_prenex_74, v_prenex_68, v_prenex_67, v_prenex_66], 10=[v_prenex_72, A, v_prenex_76, v_prenex_64, v_prenex_63, v_prenex_73, v_prenex_69, v_prenex_77]} [2021-07-14 19:20:54,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:54,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:54,885 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:20:54,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 43 [2021-07-14 19:20:54,918 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:54,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:54,963 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-07-14 19:20:54,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 42 [2021-07-14 19:20:54,994 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:56,076 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 401 DAG size of output: 380 [2021-07-14 19:20:56,082 INFO L628 ElimStorePlain]: treesize reduction 458, result has 75.9 percent of original size [2021-07-14 19:20:56,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:56,143 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:20:56,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 50 [2021-07-14 19:20:56,156 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:57,061 WARN L205 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 369 [2021-07-14 19:20:57,064 INFO L628 ElimStorePlain]: treesize reduction 10, result has 99.3 percent of original size [2021-07-14 19:20:57,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:57,111 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:20:57,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 46 [2021-07-14 19:20:57,120 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:57,566 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2021-07-14 19:20:57,567 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:20:57,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:57,609 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:20:57,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 61 [2021-07-14 19:20:57,636 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:58,101 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2021-07-14 19:20:58,102 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:20:58,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:58,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:58,159 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:20:58,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 46 [2021-07-14 19:20:58,164 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:58,189 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-07-14 19:20:58,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-07-14 19:20:58,190 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:59,046 WARN L205 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 331 [2021-07-14 19:20:59,047 INFO L628 ElimStorePlain]: treesize reduction 16, result has 98.7 percent of original size [2021-07-14 19:20:59,101 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:20:59,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 41 [2021-07-14 19:20:59,110 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:59,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:59,158 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:20:59,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 51 [2021-07-14 19:20:59,171 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-14 19:20:59,923 WARN L205 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 315 [2021-07-14 19:20:59,924 INFO L628 ElimStorePlain]: treesize reduction 33, result has 97.2 percent of original size [2021-07-14 19:20:59,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:20:59,967 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:20:59,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 55 [2021-07-14 19:20:59,982 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:00,717 WARN L205 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 302 [2021-07-14 19:21:00,719 INFO L628 ElimStorePlain]: treesize reduction 10, result has 99.1 percent of original size [2021-07-14 19:21:00,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:00,759 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-07-14 19:21:00,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 44 [2021-07-14 19:21:00,768 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:01,107 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2021-07-14 19:21:01,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:21:01,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:01,157 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-07-14 19:21:01,157 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 105 treesize of output 71 [2021-07-14 19:21:01,165 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:01,820 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 280 [2021-07-14 19:21:01,821 INFO L628 ElimStorePlain]: treesize reduction 20, result has 98.0 percent of original size [2021-07-14 19:21:01,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:01,864 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-07-14 19:21:01,865 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 86 treesize of output 69 [2021-07-14 19:21:01,892 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:02,491 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 269 [2021-07-14 19:21:02,492 INFO L628 ElimStorePlain]: treesize reduction 8, result has 99.1 percent of original size [2021-07-14 19:21:02,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:02,551 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-07-14 19:21:02,551 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 53 [2021-07-14 19:21:02,553 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:02,877 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-07-14 19:21:02,877 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:21:02,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:02,914 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-07-14 19:21:02,914 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 62 [2021-07-14 19:21:02,917 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:03,225 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2021-07-14 19:21:03,225 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:21:03,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:03,264 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-07-14 19:21:03,264 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 86 treesize of output 68 [2021-07-14 19:21:03,271 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:03,862 WARN L205 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 237 [2021-07-14 19:21:03,863 INFO L628 ElimStorePlain]: treesize reduction 10, result has 98.7 percent of original size [2021-07-14 19:21:03,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:03,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:21:03,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:21:03,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 19:21:03,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:03,910 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-07-14 19:21:03,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 66 [2021-07-14 19:21:03,916 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:03,937 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-07-14 19:21:03,938 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 41 [2021-07-14 19:21:03,939 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:04,498 WARN L205 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 220 [2021-07-14 19:21:04,499 INFO L628 ElimStorePlain]: treesize reduction 16, result has 97.7 percent of original size [2021-07-14 19:21:04,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:04,534 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-07-14 19:21:04,534 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 62 [2021-07-14 19:21:04,540 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:04,802 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-07-14 19:21:04,802 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:21:04,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 19:21:04,839 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-07-14 19:21:04,839 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 68 treesize of output 63 [2021-07-14 19:21:04,843 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-07-14 19:21:05,101 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2021-07-14 19:21:05,102 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 19:21:05,170 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-07-14 19:21:05,170 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 48 variables, input treesize:1946, output treesize:147 [2021-07-14 19:21:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:21:05,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498272548] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:21:05,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:21:05,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2021-07-14 19:21:05,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142732454] [2021-07-14 19:21:05,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-14 19:21:05,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:21:05,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-14 19:21:05,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2021-07-14 19:21:05,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:21:05,369 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:21:05,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 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) [2021-07-14 19:21:05,370 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:21:05,370 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:21:05,370 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:21:05,370 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:21:05,723 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 48 [2021-07-14 19:21:06,169 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 75 [2021-07-14 19:21:06,445 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2021-07-14 19:21:06,790 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 90 [2021-07-14 19:21:07,196 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 83 [2021-07-14 19:21:07,371 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 79 [2021-07-14 19:21:07,667 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 76 [2021-07-14 19:21:08,069 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 134 [2021-07-14 19:21:08,627 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 124 [2021-07-14 19:21:09,857 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2021-07-14 19:21:10,398 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 114 [2021-07-14 19:21:12,544 WARN L205 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 334 DAG size of output: 300 [2021-07-14 19:21:14,785 WARN L205 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 293 DAG size of output: 166 [2021-07-14 19:21:15,131 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-14 19:21:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:21:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:21:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:21:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:21:15,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:21:15,534 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:21:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:21:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash -224620877, now seen corresponding path program 5 times [2021-07-14 19:21:15,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:21:15,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893446532] [2021-07-14 19:21:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:21:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:21:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:21:15,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:21:15,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893446532] [2021-07-14 19:21:15,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893446532] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:21:15,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314022489] [2021-07-14 19:21:15,632 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 [2021-07-14 19:21:15,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 19:21:15,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:21:15,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-07-14 19:21:15,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:21:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:21:15,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314022489] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:21:15,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:21:15,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-07-14 19:21:15,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616789845] [2021-07-14 19:21:15,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-14 19:21:15,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:21:15,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-14 19:21:15,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-14 19:21:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:21:15,841 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:21:15,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 19:21:15,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:21:15,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:21:15,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:21:15,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 19:21:15,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:21:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:21:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:21:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:21:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 19:21:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:21:16,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:21:16,647 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:21:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:21:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 200503167, now seen corresponding path program 6 times [2021-07-14 19:21:16,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:21:16,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599046707] [2021-07-14 19:21:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:21:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:21:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:21:16,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:21:16,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599046707] [2021-07-14 19:21:16,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599046707] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:21:16,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454273797] [2021-07-14 19:21:16,743 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 [2021-07-14 19:21:16,783 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 19:21:16,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 19:21:16,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-14 19:21:16,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:21:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:21:16,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454273797] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:21:16,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:21:16,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2021-07-14 19:21:16,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384894790] [2021-07-14 19:21:16,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-14 19:21:16,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:21:16,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-14 19:21:16,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2021-07-14 19:21:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:21:16,978 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:21:16,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 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) [2021-07-14 19:21:16,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:21:16,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:21:16,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:21:16,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 19:21:16,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:21:16,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:21:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:21:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:21:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:21:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 19:21:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:21:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:21:17,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 19:21:17,338 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:21:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:21:17,339 INFO L82 PathProgramCache]: Analyzing trace with hash 670005473, now seen corresponding path program 7 times [2021-07-14 19:21:17,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:21:17,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317938721] [2021-07-14 19:21:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:21:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:21:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 14 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:21:17,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 19:21:17,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317938721] [2021-07-14 19:21:17,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317938721] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:21:17,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105590479] [2021-07-14 19:21:17,440 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 [2021-07-14 19:21:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:21:17,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 19:21:17,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 19:21:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 14 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 19:21:17,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105590479] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 19:21:17,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 19:21:17,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-14 19:21:17,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587192083] [2021-07-14 19:21:17,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-14 19:21:17,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 19:21:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-14 19:21:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-07-14 19:21:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:21:17,684 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 19:21:17,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 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) [2021-07-14 19:21:17,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:21:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:21:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:21:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-07-14 19:21:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:21:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:21:17,685 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 19:21:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 19:21:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 19:21:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 19:21:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 19:21:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 19:21:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-14 19:21:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 19:21:18,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-07-14 19:21:18,063 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 19:21:18,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 19:21:18,064 INFO L82 PathProgramCache]: Analyzing trace with hash 890155459, now seen corresponding path program 8 times [2021-07-14 19:21:18,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 19:21:18,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826104735] [2021-07-14 19:21:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 19:21:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 19:21:22,177 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2021-07-14 19:21:23,651 WARN L205 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 197 DAG size of output: 168 [2021-07-14 19:21:24,159 WARN L205 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 92 [2021-07-14 19:21:37,696 WARN L205 SmtUtils]: Spent 13.53 s on a formula simplification. DAG size of input: 356 DAG size of output: 339 [2021-07-14 19:21:38,500 WARN L205 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 129 [2021-07-14 19:24:06,540 WARN L205 SmtUtils]: Spent 2.47 m on a formula simplification. DAG size of input: 482 DAG size of output: 472 [2021-07-14 19:24:08,365 WARN L205 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 469 DAG size of output: 210 [2021-07-14 19:27:02,216 WARN L205 SmtUtils]: Spent 2.90 m on a formula simplification. DAG size of input: 489 DAG size of output: 446 [2021-07-14 19:27:04,000 WARN L205 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 446 DAG size of output: 216 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown