/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/chl/container-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d47b94137d5c7dd60722882962a90fb345e61909-d47b941 [2021-05-03 14:34:26,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 14:34:26,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 14:34:26,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 14:34:27,006 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 [2021-05-03 14:34:27,027 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 14:34:27,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 14:34:27,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-03 14:34:27,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-03 14:34:27,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-03 14:34:27,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-03 14:34:27,030 INFO L138 SettingsManager]: * Use SBE=true [2021-05-03 14:34:27,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 14:34:27,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 14:34:27,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 14:34:27,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 14:34:27,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 14:34:27,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 14:34:27,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 14:34:27,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 14:34:27,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 14:34:27,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 14:34:27,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 14:34:27,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 14:34:27,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 14:34:27,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 14:34:27,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 14:34:27,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 14:34:27,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 14:34:27,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 14:34:27,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-03 14:34:27,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-03 14:34:27,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-03 14:34:27,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-03 14:34:27,034 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-03 14:34:27,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 14:34:27,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-03 14:34:27,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 14:34:27,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 14:34:27,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 14:34:27,447 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-03 14:34:27,450 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-03 14:34:27,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-subst.wvr.bpl [2021-05-03 14:34:27,451 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/container-subst.wvr.bpl' [2021-05-03 14:34:27,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 14:34:27,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 14:34:27,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-03 14:34:27,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-03 14:34:27,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-03 14:34:27,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-03 14:34:27,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 14:34:27,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 14:34:27,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 14:34:27,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/1) ... [2021-05-03 14:34:27,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 14:34:27,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 14:34:27,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 14:34:27,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 14:34:27,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (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 [2021-05-03 14:34:27,915 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-03 14:34:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-03 14:34:27,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-03 14:34:27,917 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-03 14:34:27,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-03 14:34:27,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-03 14:34:27,918 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-03 14:34:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 14:34:27,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 14:34:27,919 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-03 14:34:27,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-03 14:34:27,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-03 14:34:27,922 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-03 14:34:28,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 14:34:28,200 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-03 14:34:28,202 INFO L202 PluginConnector]: Adding new model container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 02:34:28 BoogieIcfgContainer [2021-05-03 14:34:28,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 14:34:28,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 14:34:28,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 14:34:28,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 14:34:28,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 02:34:27" (1/2) ... [2021-05-03 14:34:28,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751fabbe and model type container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 02:34:28, skipping insertion in model container [2021-05-03 14:34:28,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 02:34:28" (2/2) ... [2021-05-03 14:34:28,213 INFO L111 eAbstractionObserver]: Analyzing ICFG container-subst.wvr.bpl [2021-05-03 14:34:28,220 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-03 14:34:28,221 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-03 14:34:28,261 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 14:34:28,263 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-03 14:34:28,328 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-05-03 14:34:28,346 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-03 14:34:28,371 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 14:34:28,372 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 14:34:28,372 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-03 14:34:28,372 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 14:34:28,372 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 14:34:28,380 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 14:34:28,380 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 14:34:28,381 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 14:34:28,392 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 62 flow [2021-05-03 14:34:28,421 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) [2021-05-03 14:34:28,423 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) [2021-05-03 14:34:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-03 14:34:28,430 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:34:28,431 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:34:28,431 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:34:28,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:34:28,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1365396696, now seen corresponding path program 1 times [2021-05-03 14:34:28,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:34:28,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054245742] [2021-05-03 14:34:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:34:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:34:29,470 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2021-05-03 14:34:29,724 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 148 [2021-05-03 14:34:30,438 WARN L205 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 81 [2021-05-03 14:34:30,576 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2021-05-03 14:34:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:34:30,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054245742] [2021-05-03 14:34:30,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:34:30,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 14:34:30,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764449708] [2021-05-03 14:34:30,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 14:34:30,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:34:30,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 14:34:30,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 14:34:30,617 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) [2021-05-03 14:34:30,805 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-03 14:34:31,016 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-05-03 14:34:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:34:31,035 INFO L93 Difference]: Finished difference Result 98 states and 183 transitions. [2021-05-03 14:34:31,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 14:34:31,037 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 [2021-05-03 14:34:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:34:31,046 INFO L225 Difference]: With dead ends: 98 [2021-05-03 14:34:31,046 INFO L226 Difference]: Without dead ends: 72 [2021-05-03 14:34:31,048 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1399.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-03 14:34:31,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-03 14:34:31,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-05-03 14:34:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 54 states have internal predecessors, (105), 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) [2021-05-03 14:34:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 105 transitions. [2021-05-03 14:34:31,121 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 105 transitions. Word has length 14 [2021-05-03 14:34:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:34:31,121 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 105 transitions. [2021-05-03 14:34:31,122 INFO L481 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) [2021-05-03 14:34:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 105 transitions. [2021-05-03 14:34:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-03 14:34:31,123 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:34:31,123 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:34:31,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 14:34:31,123 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:34:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:34:31,125 INFO L82 PathProgramCache]: Analyzing trace with hash -39432920, now seen corresponding path program 2 times [2021-05-03 14:34:31,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:34:31,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301246730] [2021-05-03 14:34:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:34:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:34:31,426 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2021-05-03 14:34:31,769 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-05-03 14:34:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:34:31,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301246730] [2021-05-03 14:34:31,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:34:31,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 14:34:31,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615212466] [2021-05-03 14:34:31,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 14:34:31,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:34:31,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 14:34:31,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 14:34:31,858 INFO L87 Difference]: Start difference. First operand 55 states and 105 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) [2021-05-03 14:34:32,014 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-05-03 14:34:32,209 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-05-03 14:34:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:34:32,228 INFO L93 Difference]: Finished difference Result 93 states and 168 transitions. [2021-05-03 14:34:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 14:34:32,232 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 [2021-05-03 14:34:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:34:32,233 INFO L225 Difference]: With dead ends: 93 [2021-05-03 14:34:32,234 INFO L226 Difference]: Without dead ends: 65 [2021-05-03 14:34:32,235 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 805.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-03 14:34:32,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-03 14:34:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2021-05-03 14:34:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 47 states have internal predecessors, (91), 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) [2021-05-03 14:34:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 91 transitions. [2021-05-03 14:34:32,241 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 91 transitions. Word has length 14 [2021-05-03 14:34:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:34:32,242 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 91 transitions. [2021-05-03 14:34:32,242 INFO L481 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) [2021-05-03 14:34:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 91 transitions. [2021-05-03 14:34:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-03 14:34:32,243 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:34:32,243 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:34:32,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 14:34:32,243 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:34:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:34:32,244 INFO L82 PathProgramCache]: Analyzing trace with hash -392767192, now seen corresponding path program 3 times [2021-05-03 14:34:32,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:34:32,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379631551] [2021-05-03 14:34:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:34:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:34:32,635 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 461 DAG size of output: 237 [2021-05-03 14:34:33,208 WARN L205 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 51 [2021-05-03 14:34:33,655 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 82 [2021-05-03 14:34:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:34:33,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379631551] [2021-05-03 14:34:33,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:34:33,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 14:34:33,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024382573] [2021-05-03 14:34:33,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 14:34:33,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:34:33,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 14:34:33,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 14:34:33,723 INFO L87 Difference]: Start difference. First operand 48 states and 91 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) [2021-05-03 14:34:33,939 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-05-03 14:34:34,183 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-05-03 14:34:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:34:34,194 INFO L93 Difference]: Finished difference Result 80 states and 141 transitions. [2021-05-03 14:34:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 14:34:34,198 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 [2021-05-03 14:34:34,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:34:34,198 INFO L225 Difference]: With dead ends: 80 [2021-05-03 14:34:34,198 INFO L226 Difference]: Without dead ends: 54 [2021-05-03 14:34:34,199 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1405.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-03 14:34:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-03 14:34:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-05-03 14:34:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 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) [2021-05-03 14:34:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 64 transitions. [2021-05-03 14:34:34,204 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 64 transitions. Word has length 14 [2021-05-03 14:34:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:34:34,204 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 64 transitions. [2021-05-03 14:34:34,204 INFO L481 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) [2021-05-03 14:34:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 64 transitions. [2021-05-03 14:34:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-03 14:34:34,205 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:34:34,205 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:34:34,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 14:34:34,206 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:34:34,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:34:34,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1324864438, now seen corresponding path program 4 times [2021-05-03 14:34:34,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:34:34,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250653346] [2021-05-03 14:34:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:34:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:34:34,630 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 43 [2021-05-03 14:34:34,775 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-05-03 14:34:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:34:34,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250653346] [2021-05-03 14:34:34,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:34:34,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 14:34:34,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456289998] [2021-05-03 14:34:34,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 14:34:34,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:34:34,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 14:34:34,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 14:34:34,828 INFO L87 Difference]: Start difference. First operand 37 states and 64 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) [2021-05-03 14:34:34,953 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-05-03 14:34:35,078 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-05-03 14:34:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:34:35,092 INFO L93 Difference]: Finished difference Result 56 states and 96 transitions. [2021-05-03 14:34:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 14:34:35,093 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 [2021-05-03 14:34:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:34:35,093 INFO L225 Difference]: With dead ends: 56 [2021-05-03 14:34:35,093 INFO L226 Difference]: Without dead ends: 33 [2021-05-03 14:34:35,094 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 666.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-03 14:34:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-03 14:34:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-03 14:34:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 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) [2021-05-03 14:34:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2021-05-03 14:34:35,098 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 14 [2021-05-03 14:34:35,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:34:35,098 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2021-05-03 14:34:35,098 INFO L481 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) [2021-05-03 14:34:35,098 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2021-05-03 14:34:35,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-03 14:34:35,099 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:34:35,099 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:34:35,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-03 14:34:35,099 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:34:35,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:34:35,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2000333238, now seen corresponding path program 5 times [2021-05-03 14:34:35,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:34:35,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594230519] [2021-05-03 14:34:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:34:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:34:35,311 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 187 [2021-05-03 14:34:35,708 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 51 [2021-05-03 14:34:36,203 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2021-05-03 14:34:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:34:36,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594230519] [2021-05-03 14:34:36,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:34:36,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 14:34:36,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514822646] [2021-05-03 14:34:36,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 14:34:36,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:34:36,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 14:34:36,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 14:34:36,287 INFO L87 Difference]: Start difference. First operand 33 states and 56 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) [2021-05-03 14:34:36,551 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2021-05-03 14:34:36,894 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2021-05-03 14:34:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:34:36,906 INFO L93 Difference]: Finished difference Result 48 states and 80 transitions. [2021-05-03 14:34:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 14:34:36,907 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 [2021-05-03 14:34:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:34:36,908 INFO L225 Difference]: With dead ends: 48 [2021-05-03 14:34:36,908 INFO L226 Difference]: Without dead ends: 27 [2021-05-03 14:34:36,908 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1497.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-03 14:34:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-03 14:34:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-03 14:34:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 26 states have internal predecessors, (41), 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) [2021-05-03 14:34:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2021-05-03 14:34:36,911 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 14 [2021-05-03 14:34:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:34:36,912 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-05-03 14:34:36,912 INFO L481 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) [2021-05-03 14:34:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2021-05-03 14:34:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-03 14:34:36,913 INFO L543 BasicCegarLoop]: Found error trace [2021-05-03 14:34:36,913 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 14:34:36,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-03 14:34:36,913 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-03 14:34:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 14:34:36,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1966251176, now seen corresponding path program 6 times [2021-05-03 14:34:36,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-03 14:34:36,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941586024] [2021-05-03 14:34:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 14:34:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 14:34:37,249 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 308 [2021-05-03 14:34:37,782 WARN L205 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 47 [2021-05-03 14:34:38,112 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 74 [2021-05-03 14:34:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 14:34:38,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941586024] [2021-05-03 14:34:38,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 14:34:38,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 14:34:38,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519833026] [2021-05-03 14:34:38,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 14:34:38,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-03 14:34:38,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 14:34:38,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-03 14:34:38,198 INFO L87 Difference]: Start difference. First operand 27 states and 41 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) [2021-05-03 14:34:38,344 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-05-03 14:34:38,523 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-05-03 14:34:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 14:34:38,525 INFO L93 Difference]: Finished difference Result 25 states and 39 transitions. [2021-05-03 14:34:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 14:34:38,525 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 [2021-05-03 14:34:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 14:34:38,526 INFO L225 Difference]: With dead ends: 25 [2021-05-03 14:34:38,526 INFO L226 Difference]: Without dead ends: 0 [2021-05-03 14:34:38,526 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1170.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-03 14:34:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-03 14:34:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-03 14:34:38,526 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) [2021-05-03 14:34:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-03 14:34:38,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-03 14:34:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 14:34:38,527 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-03 14:34:38,527 INFO L481 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) [2021-05-03 14:34:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-03 14:34:38,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-03 14:34:38,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-03 14:34:38,532 INFO L202 PluginConnector]: Adding new model container-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 02:34:38 BasicIcfg [2021-05-03 14:34:38,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 14:34:38,533 INFO L168 Benchmark]: Toolchain (without parser) took 10773.91 ms. Allocated memory was 348.1 MB in the beginning and 503.3 MB in the end (delta: 155.2 MB). Free memory was 327.9 MB in the beginning and 482.6 MB in the end (delta: -154.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.0 GB. [2021-05-03 14:34:38,534 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.34 ms. Allocated memory is still 348.1 MB. Free memory was 329.0 MB in the beginning and 328.9 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 14:34:38,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.26 ms. Allocated memory is still 348.1 MB. Free memory was 327.7 MB in the beginning and 326.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 14:34:38,535 INFO L168 Benchmark]: Boogie Preprocessor took 20.76 ms. Allocated memory is still 348.1 MB. Free memory was 326.3 MB in the beginning and 325.3 MB in the end (delta: 989.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-03 14:34:38,535 INFO L168 Benchmark]: RCFGBuilder took 381.87 ms. Allocated memory is still 348.1 MB. Free memory was 325.3 MB in the beginning and 308.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-05-03 14:34:38,536 INFO L168 Benchmark]: TraceAbstraction took 10328.42 ms. Allocated memory was 348.1 MB in the beginning and 503.3 MB in the end (delta: 155.2 MB). Free memory was 307.8 MB in the beginning and 482.6 MB in the end (delta: -174.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-03 14:34:38,538 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 0.34 ms. Allocated memory is still 348.1 MB. Free memory was 329.0 MB in the beginning and 328.9 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.26 ms. Allocated memory is still 348.1 MB. Free memory was 327.7 MB in the beginning and 326.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.76 ms. Allocated memory is still 348.1 MB. Free memory was 326.3 MB in the beginning and 325.3 MB in the end (delta: 989.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 381.87 ms. Allocated memory is still 348.1 MB. Free memory was 325.3 MB in the beginning and 308.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 10328.42 ms. Allocated memory was 348.1 MB in the beginning and 503.3 MB in the end (delta: 155.2 MB). Free memory was 307.8 MB in the beginning and 482.6 MB in the end (delta: -174.8 MB). There was no memory consumed. 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10161.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 11.9ms, AutomataDifference: 2538.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 40.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 119 SDtfs, 147 SDslu, 177 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 143.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6944.1ms 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: 79.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.8ms SsaConstructionTime, 330.3ms SatisfiabilityAnalysisTime, 6952.3ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 5394 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...