/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy7.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 05:39:14,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 05:39:14,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 05:39:14,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 05:39:14,756 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-FA-NoLbe.epf [2021-04-15 05:39:14,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 05:39:14,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 05:39:14,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 05:39:14,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 05:39:14,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 05:39:14,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 05:39:14,804 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 05:39:14,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 05:39:14,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 05:39:14,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 05:39:14,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 05:39:14,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 05:39:14,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 05:39:14,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 05:39:14,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 05:39:14,806 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 05:39:14,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 05:39:14,806 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 05:39:14,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 05:39:14,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 05:39:14,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 05:39:14,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 05:39:14,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 05:39:14,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 05:39:14,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 05:39:14,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 05:39:14,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 05:39:14,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 05:39:14,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 05:39:14,808 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 05:39:14,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 05:39:14,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 05:39:15,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 05:39:15,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 05:39:15,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 05:39:15,123 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-15 05:39:15,124 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-15 05:39:15,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy7.wvr.bpl [2021-04-15 05:39:15,125 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy7.wvr.bpl' [2021-04-15 05:39:15,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 05:39:15,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-15 05:39:15,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 05:39:15,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 05:39:15,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 05:39:15,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 05:39:15,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 05:39:15,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 05:39:15,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 05:39:15,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/1) ... [2021-04-15 05:39:15,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 05:39:15,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 05:39:15,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 05:39:15,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 05:39:15,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (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 [2021-04-15 05:39:15,279 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-15 05:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-15 05:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-15 05:39:15,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-15 05:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-15 05:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-15 05:39:15,280 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-15 05:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 05:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 05:39:15,281 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 05:39:15,415 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 05:39:15,415 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-15 05:39:15,416 INFO L202 PluginConnector]: Adding new model easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 05:39:15 BoogieIcfgContainer [2021-04-15 05:39:15,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 05:39:15,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 05:39:15,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 05:39:15,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 05:39:15,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 05:39:15" (1/2) ... [2021-04-15 05:39:15,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a69cd7f and model type easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 05:39:15, skipping insertion in model container [2021-04-15 05:39:15,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 05:39:15" (2/2) ... [2021-04-15 05:39:15,423 INFO L111 eAbstractionObserver]: Analyzing ICFG easy7.wvr.bpl [2021-04-15 05:39:15,432 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 05:39:15,432 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 05:39:15,436 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 05:39:15,436 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 05:39:15,501 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-04-15 05:39:15,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-15 05:39:15,547 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 05:39:15,547 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 05:39:15,548 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 05:39:15,548 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 05:39:15,548 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 05:39:15,548 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 05:39:15,548 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 05:39:15,548 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 05:39:15,559 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 21 transitions, 58 flow [2021-04-15 05:39:15,575 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 55 states, 53 states have (on average 1.679245283018868) internal successors, (89), 54 states have internal predecessors, (89), 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) [2021-04-15 05:39:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.679245283018868) internal successors, (89), 54 states have internal predecessors, (89), 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) [2021-04-15 05:39:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-15 05:39:15,585 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:15,585 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:15,586 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:15,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1327667635, now seen corresponding path program 1 times [2021-04-15 05:39:15,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:15,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754530428] [2021-04-15 05:39:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:15,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754530428] [2021-04-15 05:39:15,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:15,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 05:39:15,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341950204] [2021-04-15 05:39:15,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:39:15,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:15,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:39:15,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:15,948 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.679245283018868) internal successors, (89), 54 states have internal predecessors, (89), 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) Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:16,082 INFO L93 Difference]: Finished difference Result 75 states and 122 transitions. [2021-04-15 05:39:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 05:39:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 17 [2021-04-15 05:39:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:16,089 INFO L225 Difference]: With dead ends: 75 [2021-04-15 05:39:16,090 INFO L226 Difference]: Without dead ends: 54 [2021-04-15 05:39:16,091 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-04-15 05:39:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-04-15 05:39:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 53 states have internal predecessors, (86), 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) [2021-04-15 05:39:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-04-15 05:39:16,119 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 86 transitions. Word has length 17 [2021-04-15 05:39:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:16,120 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-04-15 05:39:16,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 86 transitions. [2021-04-15 05:39:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-15 05:39:16,121 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:16,121 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:16,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 05:39:16,121 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash -406409105, now seen corresponding path program 2 times [2021-04-15 05:39:16,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:16,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236466786] [2021-04-15 05:39:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:16,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236466786] [2021-04-15 05:39:16,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:16,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 05:39:16,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525903937] [2021-04-15 05:39:16,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:39:16,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:16,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:39:16,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,210 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:16,323 INFO L93 Difference]: Finished difference Result 74 states and 117 transitions. [2021-04-15 05:39:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 05:39:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 17 [2021-04-15 05:39:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:16,324 INFO L225 Difference]: With dead ends: 74 [2021-04-15 05:39:16,324 INFO L226 Difference]: Without dead ends: 48 [2021-04-15 05:39:16,325 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-04-15 05:39:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2021-04-15 05:39:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 44 states have internal predecessors, (69), 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) [2021-04-15 05:39:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2021-04-15 05:39:16,331 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 69 transitions. Word has length 17 [2021-04-15 05:39:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:16,331 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 69 transitions. [2021-04-15 05:39:16,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 69 transitions. [2021-04-15 05:39:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-15 05:39:16,332 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:16,332 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:16,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 05:39:16,332 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:16,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:16,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1392040397, now seen corresponding path program 3 times [2021-04-15 05:39:16,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:16,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825873548] [2021-04-15 05:39:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:16,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825873548] [2021-04-15 05:39:16,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:16,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 05:39:16,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53580207] [2021-04-15 05:39:16,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:39:16,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:16,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:39:16,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,408 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:16,509 INFO L93 Difference]: Finished difference Result 62 states and 94 transitions. [2021-04-15 05:39:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 05:39:16,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 17 [2021-04-15 05:39:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:16,510 INFO L225 Difference]: With dead ends: 62 [2021-04-15 05:39:16,510 INFO L226 Difference]: Without dead ends: 36 [2021-04-15 05:39:16,511 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-04-15 05:39:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-04-15 05:39:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 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) [2021-04-15 05:39:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2021-04-15 05:39:16,515 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 17 [2021-04-15 05:39:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:16,515 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2021-04-15 05:39:16,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2021-04-15 05:39:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-15 05:39:16,516 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:16,516 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:16,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 05:39:16,516 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash -367787921, now seen corresponding path program 4 times [2021-04-15 05:39:16,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:16,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493052868] [2021-04-15 05:39:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:16,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493052868] [2021-04-15 05:39:16,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:16,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 05:39:16,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141354339] [2021-04-15 05:39:16,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:39:16,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:16,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:39:16,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,603 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:16,689 INFO L93 Difference]: Finished difference Result 48 states and 67 transitions. [2021-04-15 05:39:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 05:39:16,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 17 [2021-04-15 05:39:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:16,690 INFO L225 Difference]: With dead ends: 48 [2021-04-15 05:39:16,690 INFO L226 Difference]: Without dead ends: 24 [2021-04-15 05:39:16,691 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-04-15 05:39:16,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-04-15 05:39:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 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) [2021-04-15 05:39:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-04-15 05:39:16,700 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 17 [2021-04-15 05:39:16,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:16,700 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-04-15 05:39:16,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-04-15 05:39:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-15 05:39:16,701 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 05:39:16,701 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 05:39:16,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 05:39:16,701 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 05:39:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 05:39:16,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1010222643, now seen corresponding path program 5 times [2021-04-15 05:39:16,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 05:39:16,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591685724] [2021-04-15 05:39:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 05:39:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 05:39:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 05:39:16,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591685724] [2021-04-15 05:39:16,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 05:39:16,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 05:39:16,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385983691] [2021-04-15 05:39:16,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 05:39:16,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 05:39:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 05:39:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,774 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 05:39:16,797 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-04-15 05:39:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 05:39:16,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 17 [2021-04-15 05:39:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 05:39:16,800 INFO L225 Difference]: With dead ends: 22 [2021-04-15 05:39:16,801 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 05:39:16,801 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 05:39:16,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 05:39:16,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 05:39:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-04-15 05:39:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 05:39:16,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-04-15 05:39:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 05:39:16,802 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 05:39:16,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-04-15 05:39:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 05:39:16,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 05:39:16,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 05:39:16,806 INFO L202 PluginConnector]: Adding new model easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 05:39:16 BasicIcfg [2021-04-15 05:39:16,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 05:39:16,812 INFO L168 Benchmark]: Toolchain (without parser) took 1639.48 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 236.5 MB in the beginning and 290.6 MB in the end (delta: -54.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.0 GB. [2021-04-15 05:39:16,812 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 173.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 05:39:16,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.37 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 05:39:16,814 INFO L168 Benchmark]: Boogie Preprocessor took 10.62 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.2 MB in the end (delta: 848.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 05:39:16,816 INFO L168 Benchmark]: RCFGBuilder took 201.93 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 240.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.0 GB. [2021-04-15 05:39:16,818 INFO L168 Benchmark]: TraceAbstraction took 1388.51 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 240.2 MB in the beginning and 290.6 MB in the end (delta: -50.4 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.0 GB. [2021-04-15 05:39:16,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 173.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.37 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.62 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.2 MB in the end (delta: 848.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 201.93 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 240.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1388.51 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 240.2 MB in the beginning and 290.6 MB in the end (delta: -50.4 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1258.3ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 11.7ms, AutomataDifference: 504.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 93 SDtfs, 40 SDslu, 324 SDs, 0 SdLazy, 631 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 312.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 234.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 60.2ms SatisfiabilityAnalysisTime, 489.5ms InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...