/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/node-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 14:35:35,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 14:35:35,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 14:35:35,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 14:35:35,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 14:35:35,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 14:35:35,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 14:35:35,115 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-Separate.epf [2021-06-05 14:35:35,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 14:35:35,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 14:35:35,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 14:35:35,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 14:35:35,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 14:35:35,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 14:35:35,158 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 14:35:35,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 14:35:35,158 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 14:35:35,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 14:35:35,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 14:35:35,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 14:35:35,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 14:35:35,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 14:35:35,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 14:35:35,160 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 14:35:35,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 14:35:35,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 14:35:35,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 14:35:35,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 14:35:35,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 14:35:35,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 14:35:35,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 14:35:35,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 14:35:35,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 14:35:35,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 14:35:35,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 14:35:35,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 14:35:35,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 14:35:35,162 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 14:35:35,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 14:35:35,162 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 14:35:35,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 14:35:35,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 14:35:35,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 14:35:35,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 14:35:35,478 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 14:35:35,481 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 14:35:35,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/node-subst.wvr.bpl [2021-06-05 14:35:35,481 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/node-subst.wvr.bpl' [2021-06-05 14:35:35,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 14:35:35,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 14:35:35,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 14:35:35,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 14:35:35,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 14:35:35,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 14:35:35,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 14:35:35,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 14:35:35,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 14:35:35,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/1) ... [2021-06-05 14:35:35,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 14:35:35,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 14:35:35,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 14:35:35,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 14:35:35,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (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 [2021-06-05 14:35:35,637 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 14:35:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 14:35:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 14:35:35,638 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 14:35:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 14:35:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 14:35:35,639 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 14:35:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 14:35:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 14:35:35,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 14:35:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 14:35:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 14:35:35,642 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 14:35:35,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 14:35:35,893 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 14:35:35,894 INFO L202 PluginConnector]: Adding new model node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:35:35 BoogieIcfgContainer [2021-06-05 14:35:35,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 14:35:35,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 14:35:35,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 14:35:35,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 14:35:35,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 02:35:35" (1/2) ... [2021-06-05 14:35:35,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36eab849 and model type node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 02:35:35, skipping insertion in model container [2021-06-05 14:35:35,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 02:35:35" (2/2) ... [2021-06-05 14:35:35,900 INFO L111 eAbstractionObserver]: Analyzing ICFG node-subst.wvr.bpl [2021-06-05 14:35:35,905 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 14:35:35,905 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 14:35:35,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 14:35:35,906 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 14:35:35,977 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 14:35:36,007 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 14:35:36,024 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 14:35:36,025 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 14:35:36,025 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 14:35:36,026 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 14:35:36,027 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 14:35:36,027 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 14:35:36,027 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 14:35:36,027 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 14:35:36,038 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2021-06-05 14:35:36,054 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 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) [2021-06-05 14:35:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 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) [2021-06-05 14:35:36,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 14:35:36,063 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:35:36,064 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:35:36,065 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:35:36,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:35:36,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1339387224, now seen corresponding path program 1 times [2021-06-05 14:35:36,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:35:36,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985514173] [2021-06-05 14:35:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:35:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:35:36,736 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-06-05 14:35:37,106 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-06-05 14:35:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:35:37,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:35:37,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985514173] [2021-06-05 14:35:37,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985514173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:35:37,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:35:37,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 14:35:37,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390649057] [2021-06-05 14:35:37,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 14:35:37,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:35:37,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 14:35:37,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:35:37,285 INFO L87 Difference]: Start difference. First operand has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 56 states have internal predecessors, (112), 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 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:37,545 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 14:35:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:35:37,564 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-06-05 14:35:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:35:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-06-05 14:35:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:35:37,574 INFO L225 Difference]: With dead ends: 93 [2021-06-05 14:35:37,574 INFO L226 Difference]: Without dead ends: 72 [2021-06-05 14:35:37,576 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 761.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:35:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-06-05 14:35:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-06-05 14:35:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.0) internal successors, (108), 54 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) [2021-06-05 14:35:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 108 transitions. [2021-06-05 14:35:37,642 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 108 transitions. Word has length 14 [2021-06-05 14:35:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:35:37,643 INFO L482 AbstractCegarLoop]: Abstraction has 55 states and 108 transitions. [2021-06-05 14:35:37,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 108 transitions. [2021-06-05 14:35:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 14:35:37,644 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:35:37,645 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:35:37,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 14:35:37,646 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:35:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:35:37,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1006513718, now seen corresponding path program 2 times [2021-06-05 14:35:37,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:35:37,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738801997] [2021-06-05 14:35:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:35:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:35:38,035 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2021-06-05 14:35:38,523 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-06-05 14:35:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:35:38,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:35:38,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738801997] [2021-06-05 14:35:38,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738801997] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:35:38,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:35:38,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 14:35:38,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938500663] [2021-06-05 14:35:38,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 14:35:38,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:35:38,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 14:35:38,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:35:38,655 INFO L87 Difference]: Start difference. First operand 55 states and 108 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:38,831 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 14:35:39,195 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-06-05 14:35:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:35:39,208 INFO L93 Difference]: Finished difference Result 91 states and 166 transitions. [2021-06-05 14:35:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:35:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-06-05 14:35:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:35:39,221 INFO L225 Difference]: With dead ends: 91 [2021-06-05 14:35:39,221 INFO L226 Difference]: Without dead ends: 70 [2021-06-05 14:35:39,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1160.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:35:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-06-05 14:35:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 53. [2021-06-05 14:35:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 2.0) internal successors, (104), 52 states have internal predecessors, (104), 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) [2021-06-05 14:35:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 104 transitions. [2021-06-05 14:35:39,227 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 104 transitions. Word has length 14 [2021-06-05 14:35:39,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:35:39,227 INFO L482 AbstractCegarLoop]: Abstraction has 53 states and 104 transitions. [2021-06-05 14:35:39,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 104 transitions. [2021-06-05 14:35:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 14:35:39,228 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:35:39,228 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:35:39,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 14:35:39,229 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:35:39,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:35:39,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1302626698, now seen corresponding path program 3 times [2021-06-05 14:35:39,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:35:39,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971476146] [2021-06-05 14:35:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:35:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:35:39,505 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2021-06-05 14:35:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:35:39,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:35:39,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971476146] [2021-06-05 14:35:39,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971476146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:35:39,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:35:39,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 14:35:39,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103203153] [2021-06-05 14:35:39,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 14:35:39,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:35:39,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 14:35:39,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:35:39,626 INFO L87 Difference]: Start difference. First operand 53 states and 104 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:35:39,767 INFO L93 Difference]: Finished difference Result 85 states and 154 transitions. [2021-06-05 14:35:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:35:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-06-05 14:35:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:35:39,769 INFO L225 Difference]: With dead ends: 85 [2021-06-05 14:35:39,769 INFO L226 Difference]: Without dead ends: 64 [2021-06-05 14:35:39,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 343.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:35:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-06-05 14:35:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-06-05 14:35:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.9130434782608696) internal successors, (88), 46 states have internal predecessors, (88), 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) [2021-06-05 14:35:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 88 transitions. [2021-06-05 14:35:39,774 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 88 transitions. Word has length 14 [2021-06-05 14:35:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:35:39,774 INFO L482 AbstractCegarLoop]: Abstraction has 47 states and 88 transitions. [2021-06-05 14:35:39,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 88 transitions. [2021-06-05 14:35:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 14:35:39,775 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:35:39,775 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:35:39,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 14:35:39,775 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:35:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:35:39,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1148523496, now seen corresponding path program 4 times [2021-06-05 14:35:39,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:35:39,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51169843] [2021-06-05 14:35:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:35:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:35:40,147 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-06-05 14:35:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:35:40,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:35:40,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51169843] [2021-06-05 14:35:40,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51169843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:35:40,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:35:40,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 14:35:40,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823073327] [2021-06-05 14:35:40,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 14:35:40,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:35:40,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 14:35:40,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:35:40,325 INFO L87 Difference]: Start difference. First operand 47 states and 88 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:40,516 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 14:35:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:35:40,528 INFO L93 Difference]: Finished difference Result 73 states and 135 transitions. [2021-06-05 14:35:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:35:40,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-06-05 14:35:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:35:40,529 INFO L225 Difference]: With dead ends: 73 [2021-06-05 14:35:40,530 INFO L226 Difference]: Without dead ends: 40 [2021-06-05 14:35:40,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 493.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:35:40,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-06-05 14:35:40,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-06-05 14:35:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 14:35:40,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 72 transitions. [2021-06-05 14:35:40,533 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 72 transitions. Word has length 14 [2021-06-05 14:35:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:35:40,533 INFO L482 AbstractCegarLoop]: Abstraction has 40 states and 72 transitions. [2021-06-05 14:35:40,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 72 transitions. [2021-06-05 14:35:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 14:35:40,534 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:35:40,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:35:40,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 14:35:40,534 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:35:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:35:40,534 INFO L82 PathProgramCache]: Analyzing trace with hash -625433448, now seen corresponding path program 5 times [2021-06-05 14:35:40,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:35:40,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684307767] [2021-06-05 14:35:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:35:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:35:40,989 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 14:35:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:35:41,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:35:41,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684307767] [2021-06-05 14:35:41,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684307767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:35:41,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:35:41,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 14:35:41,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518415702] [2021-06-05 14:35:41,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 14:35:41,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:35:41,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 14:35:41,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:35:41,066 INFO L87 Difference]: Start difference. First operand 40 states and 72 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:41,191 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 14:35:41,340 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 14:35:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:35:41,347 INFO L93 Difference]: Finished difference Result 55 states and 96 transitions. [2021-06-05 14:35:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:35:41,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-06-05 14:35:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:35:41,348 INFO L225 Difference]: With dead ends: 55 [2021-06-05 14:35:41,348 INFO L226 Difference]: Without dead ends: 36 [2021-06-05 14:35:41,348 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 624.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:35:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-06-05 14:35:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-06-05 14:35:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 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) [2021-06-05 14:35:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2021-06-05 14:35:41,351 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 14 [2021-06-05 14:35:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:35:41,352 INFO L482 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2021-06-05 14:35:41,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2021-06-05 14:35:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 14:35:41,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 14:35:41,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 14:35:41,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 14:35:41,352 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 14:35:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 14:35:41,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2092192118, now seen corresponding path program 6 times [2021-06-05 14:35:41,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 14:35:41,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9608002] [2021-06-05 14:35:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 14:35:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 14:35:41,679 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2021-06-05 14:35:41,852 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-06-05 14:35:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 14:35:41,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 14:35:41,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9608002] [2021-06-05 14:35:41,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9608002] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 14:35:41,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 14:35:41,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 14:35:41,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172216101] [2021-06-05 14:35:41,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 14:35:41,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 14:35:41,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 14:35:41,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 14:35:41,973 INFO L87 Difference]: Start difference. First operand 36 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 14:35:42,114 INFO L93 Difference]: Finished difference Result 34 states and 60 transitions. [2021-06-05 14:35:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 14:35:42,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-06-05 14:35:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 14:35:42,115 INFO L225 Difference]: With dead ends: 34 [2021-06-05 14:35:42,115 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 14:35:42,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 620.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 14:35:42,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 14:35:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 14:35:42,116 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) [2021-06-05 14:35:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 14:35:42,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-06-05 14:35:42,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 14:35:42,116 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 14:35:42,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-06-05 14:35:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 14:35:42,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 14:35:42,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 14:35:42,118 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 14:35:42,121 INFO L202 PluginConnector]: Adding new model node-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 02:35:42 BasicIcfg [2021-06-05 14:35:42,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 14:35:42,126 INFO L168 Benchmark]: Toolchain (without parser) took 6598.02 ms. Allocated memory was 356.5 MB in the beginning and 463.5 MB in the end (delta: 107.0 MB). Free memory was 336.3 MB in the beginning and 196.0 MB in the end (delta: 140.3 MB). Peak memory consumption was 247.3 MB. Max. memory is 16.0 GB. [2021-06-05 14:35:42,126 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 356.5 MB. Free memory was 337.5 MB in the beginning and 337.4 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 14:35:42,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.87 ms. Allocated memory is still 356.5 MB. Free memory was 336.2 MB in the beginning and 334.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 14:35:42,127 INFO L168 Benchmark]: Boogie Preprocessor took 22.44 ms. Allocated memory is still 356.5 MB. Free memory was 334.7 MB in the beginning and 333.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 14:35:42,128 INFO L168 Benchmark]: RCFGBuilder took 320.58 ms. Allocated memory is still 356.5 MB. Free memory was 333.6 MB in the beginning and 318.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-05 14:35:42,131 INFO L168 Benchmark]: TraceAbstraction took 6225.20 ms. Allocated memory was 356.5 MB in the beginning and 463.5 MB in the end (delta: 107.0 MB). Free memory was 318.2 MB in the beginning and 196.0 MB in the end (delta: 122.2 MB). Peak memory consumption was 230.5 MB. Max. memory is 16.0 GB. [2021-06-05 14:35:42,136 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 0.13 ms. Allocated memory is still 356.5 MB. Free memory was 337.5 MB in the beginning and 337.4 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.87 ms. Allocated memory is still 356.5 MB. Free memory was 336.2 MB in the beginning and 334.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.44 ms. Allocated memory is still 356.5 MB. Free memory was 334.7 MB in the beginning and 333.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 320.58 ms. Allocated memory is still 356.5 MB. Free memory was 333.6 MB in the beginning and 318.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6225.20 ms. Allocated memory was 356.5 MB in the beginning and 463.5 MB in the end (delta: 107.0 MB). Free memory was 318.2 MB in the beginning and 196.0 MB in the end (delta: 122.2 MB). Peak memory consumption was 230.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 68]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6096.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.3ms, AutomataDifference: 1656.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 125 SDtfs, 157 SDslu, 191 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4004.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 70.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.1ms SsaConstructionTime, 193.7ms SatisfiabilityAnalysisTime, 3969.6ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 3812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...