/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 16:43:52,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 16:43:52,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 16:43:52,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 16:43:52,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 16:43:52,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 16:43:52,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 16:43:52,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 16:43:52,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 16:43:52,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 16:43:52,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 16:43:52,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-06-16 16:43:52,658 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-Delay.epf [2021-06-16 16:43:52,686 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 16:43:52,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 16:43:52,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 16:43:52,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 16:43:52,688 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 16:43:52,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 16:43:52,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 16:43:52,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 16:43:52,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 16:43:52,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 16:43:52,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 16:43:52,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 16:43:52,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 16:43:52,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 16:43:52,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 16:43:52,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 16:43:52,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 16:43:52,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 16:43:52,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 16:43:52,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 16:43:52,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 16:43:52,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 16:43:52,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 16:43:52,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 16:43:52,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 16:43:52,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 16:43:52,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 16:43:52,719 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 16:43:52,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 16:43:52,719 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 16:43:52,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 16:43:52,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 16:43:52,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 16:43:52,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 16:43:52,971 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 16:43:52,972 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 16:43:52,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2021-06-16 16:43:52,973 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2021-06-16 16:43:53,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 16:43:53,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 16:43:53,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 16:43:53,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 16:43:53,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 16:43:53,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 16:43:53,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 16:43:53,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 16:43:53,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 16:43:53,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/1) ... [2021-06-16 16:43:53,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 16:43:53,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 16:43:53,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 16:43:53,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 16:43:53,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (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 [2021-06-16 16:43:53,083 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-16 16:43:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-16 16:43:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-16 16:43:53,084 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-16 16:43:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-16 16:43:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-16 16:43:53,084 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-16 16:43:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-16 16:43:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-16 16:43:53,084 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-16 16:43:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-16 16:43:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-16 16:43:53,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-16 16:43:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-16 16:43:53,085 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-16 16:43:53,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 16:43:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 16:43:53,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 16:43:53,086 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 16:43:53,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 16:43:53,219 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 16:43:53,221 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:43:53 BoogieIcfgContainer [2021-06-16 16:43:53,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 16:43:53,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 16:43:53,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 16:43:53,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 16:43:53,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:43:53" (1/2) ... [2021-06-16 16:43:53,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262f3fcf and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 04:43:53, skipping insertion in model container [2021-06-16 16:43:53,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:43:53" (2/2) ... [2021-06-16 16:43:53,227 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2021-06-16 16:43:53,234 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 16:43:53,234 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 16:43:53,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 16:43:53,235 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 16:43:53,350 INFO L149 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2021-06-16 16:43:53,366 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-16 16:43:53,394 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 16:43:53,394 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 16:43:53,394 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 16:43:53,395 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 16:43:53,395 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 16:43:53,395 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 16:43:53,395 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 16:43:53,395 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 16:43:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 1148 states, 936 states have (on average 1.7585470085470085) internal successors, (1646), 1147 states have internal predecessors, (1646), 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) [2021-06-16 16:43:53,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-16 16:43:53,585 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:43:53,586 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:43:53,586 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 16:43:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:43:53,590 INFO L82 PathProgramCache]: Analyzing trace with hash -877034538, now seen corresponding path program 1 times [2021-06-16 16:43:53,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:43:53,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748571307] [2021-06-16 16:43:53,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:43:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:43:53,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:53,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:43:53,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:43:53,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:43:53,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748571307] [2021-06-16 16:43:53,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748571307] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:43:53,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:43:53,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:43:53,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239776920] [2021-06-16 16:43:53,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:43:53,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:43:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:43:53,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:53,731 INFO L87 Difference]: Start difference. First operand has 1148 states, 936 states have (on average 1.7585470085470085) internal successors, (1646), 1147 states have internal predecessors, (1646), 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 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-06-16 16:43:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:43:53,754 INFO L93 Difference]: Finished difference Result 959 states and 1241 transitions. [2021-06-16 16:43:53,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:43:53,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-06-16 16:43:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:43:53,760 INFO L225 Difference]: With dead ends: 959 [2021-06-16 16:43:53,760 INFO L226 Difference]: Without dead ends: 43 [2021-06-16 16:43:53,761 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-06-16 16:43:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-06-16 16:43:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 42 states have internal predecessors, (75), 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) [2021-06-16 16:43:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 75 transitions. [2021-06-16 16:43:53,781 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 75 transitions. Word has length 21 [2021-06-16 16:43:53,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:43:53,782 INFO L482 AbstractCegarLoop]: Abstraction has 43 states and 75 transitions. [2021-06-16 16:43:53,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-06-16 16:43:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 75 transitions. [2021-06-16 16:43:53,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-16 16:43:53,782 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:43:53,782 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:43:53,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 16:43:53,783 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 16:43:53,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:43:53,783 INFO L82 PathProgramCache]: Analyzing trace with hash -847483788, now seen corresponding path program 1 times [2021-06-16 16:43:53,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:43:53,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869874480] [2021-06-16 16:43:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:43:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:43:53,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:53,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:43:53,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:43:53,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:43:53,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869874480] [2021-06-16 16:43:53,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869874480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:43:53,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:43:53,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:43:53,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753180184] [2021-06-16 16:43:53,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:43:53,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:43:53,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:43:53,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:53,803 INFO L87 Difference]: Start difference. First operand 43 states and 75 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-06-16 16:43:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:43:53,808 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-06-16 16:43:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:43:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-06-16 16:43:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:43:53,809 INFO L225 Difference]: With dead ends: 33 [2021-06-16 16:43:53,809 INFO L226 Difference]: Without dead ends: 33 [2021-06-16 16:43:53,810 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-06-16 16:43:53,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-06-16 16:43:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 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) [2021-06-16 16:43:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2021-06-16 16:43:53,812 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 21 [2021-06-16 16:43:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:43:53,813 INFO L482 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-06-16 16:43:53,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-06-16 16:43:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2021-06-16 16:43:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-16 16:43:53,813 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:43:53,813 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:43:53,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 16:43:53,814 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 16:43:53,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:43:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash -817931178, now seen corresponding path program 1 times [2021-06-16 16:43:53,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:43:53,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770210288] [2021-06-16 16:43:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:43:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:43:53,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:53,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:43:53,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:43:53,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:43:53,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770210288] [2021-06-16 16:43:53,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770210288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:43:53,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:43:53,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:43:53,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87152394] [2021-06-16 16:43:53,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:43:53,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:43:53,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:43:53,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:53,834 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-06-16 16:43:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:43:53,839 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-06-16 16:43:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:43:53,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-06-16 16:43:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:43:53,840 INFO L225 Difference]: With dead ends: 23 [2021-06-16 16:43:53,840 INFO L226 Difference]: Without dead ends: 23 [2021-06-16 16:43:53,840 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:43:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-06-16 16:43:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-06-16 16:43:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 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) [2021-06-16 16:43:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-06-16 16:43:53,842 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2021-06-16 16:43:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:43:53,842 INFO L482 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-06-16 16:43:53,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-06-16 16:43:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-06-16 16:43:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-06-16 16:43:53,843 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:43:53,843 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:43:53,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 16:43:53,843 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 16:43:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:43:53,844 INFO L82 PathProgramCache]: Analyzing trace with hash -817125798, now seen corresponding path program 1 times [2021-06-16 16:43:53,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:43:53,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249876351] [2021-06-16 16:43:53,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:43:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:43:53,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:43:53,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:43:53,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 16:43:53,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-16 16:43:53,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-16 16:43:53,918 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-16 16:43:53,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 16:43:53,937 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-16 16:43:53,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-16 16:43:53,978 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-06-16 16:43:53,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-16 16:43:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:43:54,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:43:54,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249876351] [2021-06-16 16:43:54,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249876351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:43:54,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:43:54,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 16:43:54,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317434417] [2021-06-16 16:43:54,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 16:43:54,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:43:54,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 16:43:54,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-16 16:43:54,014 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-06-16 16:43:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:43:54,062 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-06-16 16:43:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 16:43:54,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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 21 [2021-06-16 16:43:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:43:54,062 INFO L225 Difference]: With dead ends: 22 [2021-06-16 16:43:54,062 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 16:43:54,063 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-06-16 16:43:54,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 16:43:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 16:43:54,063 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) [2021-06-16 16:43:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 16:43:54,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-06-16 16:43:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:43:54,063 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 16:43:54,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-06-16 16:43:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 16:43:54,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 16:43:54,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 16:43:54,065 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 16:43:54,066 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 04:43:54 BasicIcfg [2021-06-16 16:43:54,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 16:43:54,067 INFO L168 Benchmark]: Toolchain (without parser) took 1064.95 ms. Allocated memory is still 192.9 MB. Free memory was 173.6 MB in the beginning and 166.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:54,067 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 192.9 MB. Free memory is still 174.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 16:43:54,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.94 ms. Allocated memory is still 192.9 MB. Free memory was 173.5 MB in the beginning and 172.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:54,068 INFO L168 Benchmark]: Boogie Preprocessor took 10.92 ms. Allocated memory is still 192.9 MB. Free memory was 172.1 MB in the beginning and 171.2 MB in the end (delta: 901.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:54,069 INFO L168 Benchmark]: RCFGBuilder took 185.62 ms. Allocated memory is still 192.9 MB. Free memory was 171.2 MB in the beginning and 161.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-06-16 16:43:54,069 INFO L168 Benchmark]: TraceAbstraction took 844.11 ms. Allocated memory is still 192.9 MB. Free memory was 160.7 MB in the beginning and 166.6 MB in the end (delta: -6.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 16:43:54,070 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 192.9 MB. Free memory is still 174.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.94 ms. Allocated memory is still 192.9 MB. Free memory was 173.5 MB in the beginning and 172.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.92 ms. Allocated memory is still 192.9 MB. Free memory was 172.1 MB in the beginning and 171.2 MB in the end (delta: 901.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 185.62 ms. Allocated memory is still 192.9 MB. Free memory was 171.2 MB in the beginning and 161.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 844.11 ms. Allocated memory is still 192.9 MB. Free memory was 160.7 MB in the beginning and 166.6 MB in the end (delta: -6.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 5173, positive: 4532, positive conditional: 4532, positive unconditional: 0, negative: 641, negative conditional: 641, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4532, positive: 4532, positive conditional: 0, positive unconditional: 4532, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 330, positive: 330, positive conditional: 0, positive unconditional: 330, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 330, positive: 330, positive conditional: 0, positive unconditional: 330, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4532, positive: 4202, positive conditional: 0, positive unconditional: 4202, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 330, unknown conditional: 0, unknown unconditional: 330] , Statistics on independence cache: Total cache size (in pairs): 330, Positive cache size: 330, Positive conditional cache size: 0, Positive unconditional cache size: 330, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 641 - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 11 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 671.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 26.6ms, AutomataDifference: 103.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 165.0ms, PartialOrderReductionTime: 157.1ms, HoareTripleCheckerStatistics: 116 SDtfs, 95 SDslu, 44 SDs, 0 SdLazy, 13 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 117.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1148occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.7ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.8ms SsaConstructionTime, 28.3ms SatisfiabilityAnalysisTime, 242.7ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 558 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...