/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/node-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 15:43:24,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 15:43:24,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 15:43:24,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 15:43:24,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 15:43:24,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 15:43:24,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 15:43:24,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 15:43:24,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 15:43:24,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 15:43:24,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 15:43:24,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 15:43:24,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 15:43:24,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 15:43:24,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 15:43:24,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 15:43:24,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 15:43:24,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 15:43:24,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 15:43:24,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 15:43:24,568 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-SemanticLbe.epf [2021-03-11 15:43:24,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 15:43:24,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 15:43:24,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 15:43:24,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 15:43:24,610 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 15:43:24,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 15:43:24,610 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 15:43:24,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 15:43:24,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 15:43:24,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 15:43:24,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 15:43:24,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 15:43:24,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 15:43:24,612 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 15:43:24,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 15:43:24,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 15:43:24,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 15:43:24,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 15:43:24,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 15:43:24,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 15:43:24,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 15:43:24,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 15:43:24,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 15:43:24,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 15:43:24,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 15:43:24,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 15:43:24,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 15:43:24,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 15:43:24,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 15:43:24,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 15:43:24,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 15:43:24,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 15:43:24,960 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 15:43:24,962 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 15:43:24,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/node-trans.wvr.bpl [2021-03-11 15:43:24,964 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/node-trans.wvr.bpl' [2021-03-11 15:43:25,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 15:43:25,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 15:43:25,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 15:43:25,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 15:43:25,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 15:43:25,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 15:43:25,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 15:43:25,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 15:43:25,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 15:43:25,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/1) ... [2021-03-11 15:43:25,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 15:43:25,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 15:43:25,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 15:43:25,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 15:43:25,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (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 [2021-03-11 15:43:25,129 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 15:43:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 15:43:25,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 15:43:25,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 15:43:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 15:43:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 15:43:25,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 15:43:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 15:43:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 15:43:25,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 15:43:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 15:43:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 15:43:25,132 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 15:43:25,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 15:43:25,448 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 15:43:25,449 INFO L202 PluginConnector]: Adding new model node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:43:25 BoogieIcfgContainer [2021-03-11 15:43:25,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 15:43:25,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 15:43:25,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 15:43:25,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 15:43:25,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 03:43:25" (1/2) ... [2021-03-11 15:43:25,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590a3d0b and model type node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 03:43:25, skipping insertion in model container [2021-03-11 15:43:25,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 03:43:25" (2/2) ... [2021-03-11 15:43:25,458 INFO L111 eAbstractionObserver]: Analyzing ICFG node-trans.wvr.bpl [2021-03-11 15:43:25,463 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 15:43:25,464 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 15:43:25,468 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 15:43:25,469 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 15:43:25,524 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-11 15:43:25,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 15:43:25,604 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 15:43:25,605 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 15:43:25,605 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 15:43:25,605 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 15:43:25,605 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 15:43:25,605 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 15:43:25,605 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 15:43:25,605 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 15:43:25,633 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 15:43:25,646 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:43:25,655 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 62 flow [2021-03-11 15:43:25,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-11 15:43:25,703 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 15:43:25,703 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 15:43:25,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 15:43:25,709 INFO L116 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-11 15:43:26,011 INFO L131 LiptonReduction]: Checked pairs total: 42 [2021-03-11 15:43:26,011 INFO L133 LiptonReduction]: Total number of compositions: 6 [2021-03-11 15:43:26,024 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 14 transitions, 52 flow [2021-03-11 15:43:26,038 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 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) [2021-03-11 15:43:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 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) [2021-03-11 15:43:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:43:26,052 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:43:26,053 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:43:26,053 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:43:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:43:26,059 INFO L82 PathProgramCache]: Analyzing trace with hash -575214304, now seen corresponding path program 1 times [2021-03-11 15:43:26,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:43:26,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760773905] [2021-03-11 15:43:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:43:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:43:26,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:43:26,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:43:26,449 INFO L142 QuantifierPusher]: treesize reduction 35, result has 68.5 percent of original size [2021-03-11 15:43:26,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-03-11 15:43:26,544 INFO L142 QuantifierPusher]: treesize reduction 19, result has 84.0 percent of original size [2021-03-11 15:43:26,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 15:43:26,620 INFO L142 QuantifierPusher]: treesize reduction 33, result has 51.5 percent of original size [2021-03-11 15:43:26,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 15:43:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:43:26,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760773905] [2021-03-11 15:43:26,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:43:26,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:43:26,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054025971] [2021-03-11 15:43:26,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:43:26,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:43:26,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:43:26,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:43:26,681 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 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, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:43:26,877 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2021-03-11 15:43:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:43:26,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-03-11 15:43:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:43:26,887 INFO L225 Difference]: With dead ends: 34 [2021-03-11 15:43:26,887 INFO L226 Difference]: Without dead ends: 28 [2021-03-11 15:43:26,890 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 279.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:43:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-03-11 15:43:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-03-11 15:43:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 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) [2021-03-11 15:43:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2021-03-11 15:43:26,927 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 36 transitions. Word has length 10 [2021-03-11 15:43:26,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:43:26,928 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 36 transitions. [2021-03-11 15:43:26,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2021-03-11 15:43:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:43:26,929 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:43:26,929 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:43:26,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 15:43:26,930 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:43:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:43:26,931 INFO L82 PathProgramCache]: Analyzing trace with hash -485841304, now seen corresponding path program 2 times [2021-03-11 15:43:26,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:43:26,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748981352] [2021-03-11 15:43:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:43:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:43:27,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:43:27,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:43:27,032 INFO L142 QuantifierPusher]: treesize reduction 47, result has 55.2 percent of original size [2021-03-11 15:43:27,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 15:43:27,058 INFO L142 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-03-11 15:43:27,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 15:43:27,081 INFO L142 QuantifierPusher]: treesize reduction 30, result has 33.3 percent of original size [2021-03-11 15:43:27,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 15:43:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:43:27,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748981352] [2021-03-11 15:43:27,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:43:27,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:43:27,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152999105] [2021-03-11 15:43:27,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:43:27,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:43:27,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:43:27,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:43:27,107 INFO L87 Difference]: Start difference. First operand 23 states and 36 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:43:27,215 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-03-11 15:43:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:43:27,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-03-11 15:43:27,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:43:27,219 INFO L225 Difference]: With dead ends: 33 [2021-03-11 15:43:27,219 INFO L226 Difference]: Without dead ends: 27 [2021-03-11 15:43:27,220 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:43:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-03-11 15:43:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-03-11 15:43:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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) [2021-03-11 15:43:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2021-03-11 15:43:27,228 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 34 transitions. Word has length 10 [2021-03-11 15:43:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:43:27,229 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 34 transitions. [2021-03-11 15:43:27,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:27,229 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2021-03-11 15:43:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:43:27,230 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:43:27,231 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:43:27,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 15:43:27,231 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:43:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:43:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 200543336, now seen corresponding path program 3 times [2021-03-11 15:43:27,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:43:27,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997145706] [2021-03-11 15:43:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:43:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:43:27,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:43:27,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:43:27,294 INFO L142 QuantifierPusher]: treesize reduction 48, result has 57.5 percent of original size [2021-03-11 15:43:27,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-11 15:43:27,346 INFO L142 QuantifierPusher]: treesize reduction 24, result has 79.1 percent of original size [2021-03-11 15:43:27,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 15:43:27,397 INFO L142 QuantifierPusher]: treesize reduction 77, result has 14.4 percent of original size [2021-03-11 15:43:27,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 15:43:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:43:27,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997145706] [2021-03-11 15:43:27,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:43:27,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:43:27,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489944465] [2021-03-11 15:43:27,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:43:27,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:43:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:43:27,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:43:27,419 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:43:27,613 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2021-03-11 15:43:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:43:27,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-03-11 15:43:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:43:27,614 INFO L225 Difference]: With dead ends: 31 [2021-03-11 15:43:27,614 INFO L226 Difference]: Without dead ends: 25 [2021-03-11 15:43:27,615 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 258.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:43:27,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-03-11 15:43:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2021-03-11 15:43:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 15:43:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2021-03-11 15:43:27,618 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 29 transitions. Word has length 10 [2021-03-11 15:43:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:43:27,618 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 29 transitions. [2021-03-11 15:43:27,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2021-03-11 15:43:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:43:27,619 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:43:27,619 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:43:27,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 15:43:27,619 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:43:27,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:43:27,620 INFO L82 PathProgramCache]: Analyzing trace with hash 204060596, now seen corresponding path program 4 times [2021-03-11 15:43:27,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:43:27,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513074863] [2021-03-11 15:43:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:43:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:43:27,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:43:27,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:43:27,685 INFO L142 QuantifierPusher]: treesize reduction 21, result has 61.8 percent of original size [2021-03-11 15:43:27,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 15:43:27,705 INFO L142 QuantifierPusher]: treesize reduction 8, result has 89.2 percent of original size [2021-03-11 15:43:27,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-11 15:43:27,743 INFO L142 QuantifierPusher]: treesize reduction 26, result has 39.5 percent of original size [2021-03-11 15:43:27,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 15:43:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:43:27,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513074863] [2021-03-11 15:43:27,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:43:27,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:43:27,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256624010] [2021-03-11 15:43:27,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:43:27,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:43:27,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:43:27,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:43:27,764 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:43:27,907 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2021-03-11 15:43:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:43:27,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-03-11 15:43:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:43:27,911 INFO L225 Difference]: With dead ends: 28 [2021-03-11 15:43:27,912 INFO L226 Difference]: Without dead ends: 16 [2021-03-11 15:43:27,912 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 172.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:43:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-03-11 15:43:27,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-03-11 15:43:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-03-11 15:43:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-03-11 15:43:27,917 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2021-03-11 15:43:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:43:27,918 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-03-11 15:43:27,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-03-11 15:43:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:43:27,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:43:27,919 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:43:27,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 15:43:27,919 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:43:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:43:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1345310480, now seen corresponding path program 5 times [2021-03-11 15:43:27,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:43:27,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591722866] [2021-03-11 15:43:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:43:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:43:27,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:43:27,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:43:27,966 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.0 percent of original size [2021-03-11 15:43:27,967 INFO L147 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size 53 [2021-03-11 15:43:27,999 INFO L142 QuantifierPusher]: treesize reduction 19, result has 71.6 percent of original size [2021-03-11 15:43:28,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 15:43:28,025 INFO L142 QuantifierPusher]: treesize reduction 26, result has 39.5 percent of original size [2021-03-11 15:43:28,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 15:43:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:43:28,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591722866] [2021-03-11 15:43:28,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:43:28,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:43:28,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741797091] [2021-03-11 15:43:28,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:43:28,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:43:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:43:28,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:43:28,054 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:43:28,138 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-03-11 15:43:28,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:43:28,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-03-11 15:43:28,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:43:28,139 INFO L225 Difference]: With dead ends: 20 [2021-03-11 15:43:28,139 INFO L226 Difference]: Without dead ends: 15 [2021-03-11 15:43:28,139 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:43:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-03-11 15:43:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-03-11 15:43:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-03-11 15:43:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-03-11 15:43:28,142 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-03-11 15:43:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:43:28,142 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-03-11 15:43:28,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-03-11 15:43:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 15:43:28,142 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 15:43:28,142 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 15:43:28,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 15:43:28,143 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 15:43:28,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 15:43:28,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1320343700, now seen corresponding path program 6 times [2021-03-11 15:43:28,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 15:43:28,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355480234] [2021-03-11 15:43:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 15:43:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 15:43:28,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 15:43:28,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 15:43:28,182 INFO L142 QuantifierPusher]: treesize reduction 40, result has 71.2 percent of original size [2021-03-11 15:43:28,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 15:43:28,249 INFO L142 QuantifierPusher]: treesize reduction 8, result has 92.9 percent of original size [2021-03-11 15:43:28,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-03-11 15:43:28,304 INFO L142 QuantifierPusher]: treesize reduction 17, result has 69.1 percent of original size [2021-03-11 15:43:28,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 15:43:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 15:43:28,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355480234] [2021-03-11 15:43:28,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 15:43:28,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 15:43:28,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775822548] [2021-03-11 15:43:28,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 15:43:28,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 15:43:28,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 15:43:28,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 15:43:28,341 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 15:43:28,495 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2021-03-11 15:43:28,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 15:43:28,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-03-11 15:43:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 15:43:28,496 INFO L225 Difference]: With dead ends: 14 [2021-03-11 15:43:28,496 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 15:43:28,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 278.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 15:43:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 15:43:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 15:43:28,497 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) [2021-03-11 15:43:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 15:43:28,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-03-11 15:43:28,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 15:43:28,497 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 15:43:28,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-03-11 15:43:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 15:43:28,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 15:43:28,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 15:43:28,500 INFO L202 PluginConnector]: Adding new model node-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 03:43:28 BasicIcfg [2021-03-11 15:43:28,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 15:43:28,501 INFO L168 Benchmark]: Toolchain (without parser) took 3498.04 ms. Allocated memory is still 333.4 MB. Free memory was 313.6 MB in the beginning and 223.7 MB in the end (delta: 90.0 MB). Peak memory consumption was 91.5 MB. Max. memory is 16.0 GB. [2021-03-11 15:43:28,502 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 333.4 MB. Free memory was 314.8 MB in the beginning and 314.8 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 15:43:28,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.31 ms. Allocated memory is still 333.4 MB. Free memory was 313.1 MB in the beginning and 311.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:43:28,503 INFO L168 Benchmark]: Boogie Preprocessor took 18.80 ms. Allocated memory is still 333.4 MB. Free memory was 311.6 MB in the beginning and 310.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 15:43:28,503 INFO L168 Benchmark]: RCFGBuilder took 393.53 ms. Allocated memory is still 333.4 MB. Free memory was 310.6 MB in the beginning and 295.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 15:43:28,503 INFO L168 Benchmark]: TraceAbstraction took 3049.21 ms. Allocated memory is still 333.4 MB. Free memory was 295.3 MB in the beginning and 223.7 MB in the end (delta: 71.7 MB). Peak memory consumption was 72.6 MB. Max. memory is 16.0 GB. [2021-03-11 15:43:28,505 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 0.25 ms. Allocated memory is still 333.4 MB. Free memory was 314.8 MB in the beginning and 314.8 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.31 ms. Allocated memory is still 333.4 MB. Free memory was 313.1 MB in the beginning and 311.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.80 ms. Allocated memory is still 333.4 MB. Free memory was 311.6 MB in the beginning and 310.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 393.53 ms. Allocated memory is still 333.4 MB. Free memory was 310.6 MB in the beginning and 295.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3049.21 ms. Allocated memory is still 333.4 MB. Free memory was 295.3 MB in the beginning and 223.7 MB in the end (delta: 71.7 MB). Peak memory consumption was 72.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 356.8ms, 29 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 14 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 42, positive conditional: 0, positive unconditional: 42, 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: 30, positive: 30, positive conditional: 0, positive unconditional: 30, 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: 30, positive: 30, positive conditional: 0, positive unconditional: 30, 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: 42, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 2895.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 17.3ms, AutomataDifference: 931.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 432.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 100 SDslu, 117 SDs, 0 SdLazy, 80 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1244.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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: 41.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.1ms SsaConstructionTime, 181.5ms SatisfiabilityAnalysisTime, 1095.1ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1394 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...