/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-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 23:15:12,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 23:15:12,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 23:15:12,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 23:15:12,697 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-Lockstep.epf [2021-06-13 23:15:12,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 23:15:12,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 23:15:12,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-13 23:15:12,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-13 23:15:12,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 23:15:12,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 23:15:12,725 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 23:15:12,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 23:15:12,725 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 23:15:12,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 23:15:12,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 23:15:12,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 23:15:12,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 23:15:12,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 23:15:12,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 23:15:12,726 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 23:15:12,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 23:15:12,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 23:15:12,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 23:15:12,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 23:15:12,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 23:15:12,727 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 23:15:12,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-13 23:15:12,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-13 23:15:12,728 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-13 23:15:12,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 23:15:12,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 23:15:12,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 23:15:12,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 23:15:12,940 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 23:15:12,940 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 23:15:12,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl [2021-06-13 23:15:12,941 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl' [2021-06-13 23:15:12,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 23:15:13,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 23:15:13,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 23:15:13,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 23:15:13,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 23:15:13,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 23:15:13,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 23:15:13,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 23:15:13,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 23:15:13,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... [2021-06-13 23:15:13,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 23:15:13,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 23:15:13,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 23:15:13,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 23:15:13,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 23:15:13,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 23:15:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 23:15:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 23:15:13,207 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 23:15:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 23:15:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 23:15:13,208 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 23:15:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 23:15:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 23:15:13,209 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 23:15:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 23:15:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 23:15:13,210 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 23:15:13,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 23:15:13,473 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 23:15:13,475 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 11:15:13 BoogieIcfgContainer [2021-06-13 23:15:13,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 23:15:13,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 23:15:13,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 23:15:13,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 23:15:13,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 11:15:12" (1/2) ... [2021-06-13 23:15:13,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5099e91 and model type ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 11:15:13, skipping insertion in model container [2021-06-13 23:15:13,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 11:15:13" (2/2) ... [2021-06-13 23:15:13,479 INFO L111 eAbstractionObserver]: Analyzing ICFG ring-nondet.wvr.bpl [2021-06-13 23:15:13,483 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-13 23:15:13,483 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 23:15:13,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 23:15:13,483 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 23:15:13,504 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 23:15:13,517 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-13 23:15:13,563 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 23:15:13,563 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 23:15:13,563 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 23:15:13,563 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 23:15:13,564 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 23:15:13,564 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 23:15:13,564 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 23:15:13,564 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 23:15:13,652 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:15:13,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:15:13,658 INFO L82 PathProgramCache]: Analyzing trace with hash 199064895, now seen corresponding path program 1 times [2021-06-13 23:15:13,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:15:13,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904951178] [2021-06-13 23:15:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:15:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:15:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-13 23:15:13,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:15:13,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904951178] [2021-06-13 23:15:13,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904951178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:15:13,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521501235] [2021-06-13 23:15:13,830 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 [2021-06-13 23:15:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:15:13,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-13 23:15:13,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:15:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-06-13 23:15:14,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521501235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 23:15:14,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-13 23:15:14,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-06-13 23:15:14,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027289470] [2021-06-13 23:15:14,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 23:15:14,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:15:14,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 23:15:14,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-13 23:15:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:15:14,080 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:15:14,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-06-13 23:15:14,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:15:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 23:15:14,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-13 23:15:14,324 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:15:14,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:15:14,325 INFO L82 PathProgramCache]: Analyzing trace with hash 625486775, now seen corresponding path program 2 times [2021-06-13 23:15:14,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:15:14,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249393101] [2021-06-13 23:15:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:15:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:15:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-13 23:15:14,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:15:14,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249393101] [2021-06-13 23:15:14,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249393101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:15:14,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190255989] [2021-06-13 23:15:14,394 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 [2021-06-13 23:15:14,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 23:15:14,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:15:14,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-13 23:15:14,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:15:14,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-13 23:15:14,575 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-13 23:15:14,576 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 23:15:14,577 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-13 23:15:14,577 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-06-13 23:15:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-13 23:15:14,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190255989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:15:14,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:15:14,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-13 23:15:14,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338763112] [2021-06-13 23:15:14,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 23:15:14,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:15:14,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 23:15:14,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 23:15:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:15:14,613 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:15:14,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 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) [2021-06-13 23:15:14,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 23:15:14,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:15:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 23:15:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 23:15:14,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:15:14,895 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:15:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:15:14,895 INFO L82 PathProgramCache]: Analyzing trace with hash 719065356, now seen corresponding path program 3 times [2021-06-13 23:15:14,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:15:14,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619885849] [2021-06-13 23:15:14,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:15:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:15:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 86 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 23:15:15,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:15:15,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619885849] [2021-06-13 23:15:15,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619885849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:15:15,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115459578] [2021-06-13 23:15:15,248 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 [2021-06-13 23:15:15,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-13 23:15:15,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:15:15,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-13 23:15:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:15:15,473 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-06-13 23:15:15,474 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 22 treesize of output 10 [2021-06-13 23:15:15,477 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-13 23:15:15,480 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 23:15:15,480 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-13 23:15:15,480 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:7 [2021-06-13 23:15:15,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-13 23:15:15,531 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-13 23:15:15,532 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 23:15:15,534 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-13 23:15:15,535 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:3 [2021-06-13 23:15:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-13 23:15:15,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115459578] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:15:15,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:15:15,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2021-06-13 23:15:15,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297527791] [2021-06-13 23:15:15,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-13 23:15:15,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:15:15,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-13 23:15:15,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-06-13 23:15:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:15:15,614 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:15:15,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 23 states have internal predecessors, (108), 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) [2021-06-13 23:15:15,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 23:15:15,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-13 23:15:15,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:15:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 23:15:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 23:15:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-13 23:15:16,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:15:16,869 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:15:16,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:15:16,869 INFO L82 PathProgramCache]: Analyzing trace with hash -2000416830, now seen corresponding path program 4 times [2021-06-13 23:15:16,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:15:16,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274857278] [2021-06-13 23:15:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:15:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 23:15:19,527 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2021-06-13 23:15:19,671 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2021-06-13 23:15:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 5 proven. 775 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-13 23:15:21,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 23:15:21,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274857278] [2021-06-13 23:15:21,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274857278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:15:21,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657251281] [2021-06-13 23:15:21,105 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 [2021-06-13 23:15:21,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-13 23:15:21,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 23:15:21,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 71 conjunts are in the unsatisfiable core [2021-06-13 23:15:21,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 23:15:22,573 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-13 23:15:23,072 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-06-13 23:15:23,365 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2021-06-13 23:15:24,006 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2021-06-13 23:15:24,548 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2021-06-13 23:15:25,156 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2021-06-13 23:15:25,353 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-13 23:15:26,007 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 118 [2021-06-13 23:15:26,509 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 124 [2021-06-13 23:15:26,779 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-13 23:15:27,056 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-13 23:15:27,526 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 128 [2021-06-13 23:15:28,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-13 23:15:28,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-13 23:15:28,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 55 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 37 [2021-06-13 23:15:28,046 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-13 23:15:28,050 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 23:15:28,051 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-13 23:15:28,052 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:98, output treesize:9 [2021-06-13 23:15:28,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-13 23:15:28,242 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-13 23:15:28,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 23:15:28,244 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-13 23:15:28,244 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-06-13 23:15:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 46 proven. 721 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-06-13 23:15:28,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657251281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 23:15:28,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 23:15:28,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 40] total 83 [2021-06-13 23:15:28,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055779792] [2021-06-13 23:15:28,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-06-13 23:15:28,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 23:15:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-06-13 23:15:28,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=6208, Unknown=0, NotChecked=0, Total=6972 [2021-06-13 23:15:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:15:28,387 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-13 23:15:28,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 3.0476190476190474) internal successors, (256), 83 states have internal predecessors, (256), 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) [2021-06-13 23:15:28,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-13 23:15:28,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-13 23:15:28,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-13 23:15:28,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-13 23:15:30,474 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2021-06-13 23:15:31,377 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2021-06-13 23:15:31,711 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-13 23:15:31,890 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2021-06-13 23:15:32,993 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2021-06-13 23:15:33,405 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-13 23:15:33,626 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-06-13 23:15:33,890 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2021-06-13 23:15:34,848 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-13 23:15:35,019 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-13 23:15:35,276 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-13 23:15:35,475 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-13 23:15:35,852 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-13 23:15:36,246 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-06-13 23:15:36,501 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-06-13 23:15:36,776 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-13 23:15:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 23:15:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 23:15:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-13 23:15:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-13 23:15:39,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 23:15:39,241 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 23:15:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 23:15:39,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2029949782, now seen corresponding path program 5 times [2021-06-13 23:15:39,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 23:15:39,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765627970] [2021-06-13 23:15:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 23:15:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown