/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-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/LBE_bigexample_safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:10:20,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:10:20,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:10:20,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:10:20,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:10:20,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:10:20,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:10:20,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:10:20,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:10:20,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:10:20,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:10:20,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-03-24 22:10:20,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:10:20,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:10:20,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:10:20,984 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-PN-SemanticLbe.epf [2021-03-24 22:10:21,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:10:21,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:10:21,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:10:21,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:10:21,009 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:10:21,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:10:21,009 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:10:21,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:10:21,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:10:21,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:10:21,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:10:21,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:10:21,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:10:21,010 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:10:21,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:10:21,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:10:21,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:10:21,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:10:21,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:10:21,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:10:21,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:10:21,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:10:21,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:10:21,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:10:21,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:10:21,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:10:21,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:10:21,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:10:21,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:10:21,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:10:21,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:10:21,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:10:21,232 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:10:21,233 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:10:21,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/LBE_bigexample_safe.bpl [2021-03-24 22:10:21,244 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/LBE_bigexample_safe.bpl' [2021-03-24 22:10:21,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:10:21,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:10:21,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:10:21,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:10:21,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:10:21,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:10:21,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:10:21,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:10:21,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:10:21,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/1) ... [2021-03-24 22:10:21,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:10:21,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:10:21,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:10:21,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:10:21,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (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 [2021-03-24 22:10:21,359 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-24 22:10:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-24 22:10:21,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:10:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:10:21,360 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:10:21,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:10:21,493 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:10:21,494 INFO L202 PluginConnector]: Adding new model LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:10:21 BoogieIcfgContainer [2021-03-24 22:10:21,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:10:21,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:10:21,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:10:21,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:10:21,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:21" (1/2) ... [2021-03-24 22:10:21,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7379f48a and model type LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:10:21, skipping insertion in model container [2021-03-24 22:10:21,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:10:21" (2/2) ... [2021-03-24 22:10:21,500 INFO L111 eAbstractionObserver]: Analyzing ICFG LBE_bigexample_safe.bpl [2021-03-24 22:10:21,504 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:10:21,506 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2021-03-24 22:10:21,506 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:10:21,567 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-03-24 22:10:21,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-03-24 22:10:21,594 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:10:21,594 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:10:21,594 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:10:21,594 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:10:21,594 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:10:21,594 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:10:21,594 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:10:21,594 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:10:21,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 240 flow [2021-03-24 22:10:21,649 INFO L129 PetriNetUnfolder]: 17/98 cut-off events. [2021-03-24 22:10:21,649 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-24 22:10:21,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 98 events. 17/98 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 198 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2021-03-24 22:10:21,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 86 transitions, 240 flow [2021-03-24 22:10:21,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 77 transitions, 202 flow [2021-03-24 22:10:21,664 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:10:21,673 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 202 flow [2021-03-24 22:10:21,679 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 202 flow [2021-03-24 22:10:21,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 202 flow [2021-03-24 22:10:21,709 INFO L129 PetriNetUnfolder]: 14/93 cut-off events. [2021-03-24 22:10:21,710 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-03-24 22:10:21,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 93 events. 14/93 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 207 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2021-03-24 22:10:21,714 INFO L142 LiptonReduction]: Number of co-enabled transitions 2320 [2021-03-24 22:10:22,034 INFO L154 LiptonReduction]: Checked pairs total: 1406 [2021-03-24 22:10:22,035 INFO L156 LiptonReduction]: Total number of compositions: 61 [2021-03-24 22:10:22,036 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 373 [2021-03-24 22:10:22,041 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-24 22:10:22,041 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:10:22,042 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:10:22,042 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-24 22:10:22,042 INFO L428 AbstractCegarLoop]: === Iteration 1 === [fooErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr17ASSERT_VIOLATIONASSERT, fooErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr19ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONASSERT, fooErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15ASSERT_VIOLATIONASSERT, ULTIMATE.startErr9ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr13ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr11ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr18ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr16ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr14ASSERT_VIOLATIONASSERT, fooErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONASSERT, ULTIMATE.startErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONASSERT, fooErr1ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:10:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:10:22,045 INFO L82 PathProgramCache]: Analyzing trace with hash 111808, now seen corresponding path program 1 times [2021-03-24 22:10:22,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:10:22,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274104253] [2021-03-24 22:10:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:10:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:10:22,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:10:22,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:10:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:10:22,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274104253] [2021-03-24 22:10:22,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:10:22,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 22:10:22,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955903698] [2021-03-24 22:10:22,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:10:22,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:10:22,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:10:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:10:22,129 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 147 [2021-03-24 22:10:22,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:10:22,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:10:22,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 147 [2021-03-24 22:10:22,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:10:22,206 INFO L129 PetriNetUnfolder]: 249/429 cut-off events. [2021-03-24 22:10:22,206 INFO L130 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2021-03-24 22:10:22,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 429 events. 249/429 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1641 event pairs, 209 based on Foata normal form. 32/418 useless extension candidates. Maximal degree in co-relation 757. Up to 321 conditions per place. [2021-03-24 22:10:22,209 INFO L132 encePairwiseOnDemand]: 118/147 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-24 22:10:22,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 124 flow [2021-03-24 22:10:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:10:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:10:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2021-03-24 22:10:22,220 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2021-03-24 22:10:22,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 126 transitions. [2021-03-24 22:10:22,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 126 transitions. [2021-03-24 22:10:22,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:10:22,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 126 transitions. [2021-03-24 22:10:22,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-03-24 22:10:22,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2021-03-24 22:10:22,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2021-03-24 22:10:22,237 INFO L185 Difference]: Start difference. First operand has 59 places, 55 transitions, 158 flow. Second operand 3 states and 126 transitions. [2021-03-24 22:10:22,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 124 flow [2021-03-24 22:10:22,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 92 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-24 22:10:22,245 INFO L241 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2021-03-24 22:10:22,246 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2021-03-24 22:10:22,246 INFO L343 CegarLoopForPetriNet]: 59 programPoint places, -34 predicate places. [2021-03-24 22:10:22,246 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2021-03-24 22:10:22,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:10:22,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:10:22,250 INFO L202 PluginConnector]: Adding new model LBE_bigexample_safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:10:22 BasicIcfg [2021-03-24 22:10:22,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:10:22,251 INFO L168 Benchmark]: Toolchain (without parser) took 976.28 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 236.7 MB in the beginning and 302.0 MB in the end (delta: -65.3 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.0 GB. [2021-03-24 22:10:22,252 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:10:22,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.60 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:10:22,253 INFO L168 Benchmark]: Boogie Preprocessor took 11.56 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 862.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:10:22,254 INFO L168 Benchmark]: RCFGBuilder took 183.97 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 238.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.0 GB. [2021-03-24 22:10:22,254 INFO L168 Benchmark]: TraceAbstraction took 754.94 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 238.1 MB in the beginning and 302.0 MB in the end (delta: -63.9 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.0 GB. [2021-03-24 22:10:22,259 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 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.60 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.56 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 862.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 183.97 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 238.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 754.94 ms. Allocated memory was 255.9 MB in the beginning and 369.1 MB in the end (delta: 113.2 MB). Free memory was 238.1 MB in the beginning and 302.0 MB in the end (delta: -63.9 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 356.0ms, 81 PlacesBefore, 59 PlacesAfterwards, 77 TransitionsBefore, 55 TransitionsAfterwards, 2320 CoEnabledTransitionPairs, 5 FixpointIterations, 0 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 61 TotalNumberOfCompositions, 1406 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1406, positive: 1406, positive conditional: 0, positive unconditional: 1406, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 820, positive: 820, positive conditional: 0, positive unconditional: 820, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 820, positive: 820, positive conditional: 0, positive unconditional: 820, 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: 820, positive: 820, positive conditional: 0, positive unconditional: 820, 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: 1406, positive: 586, positive conditional: 0, positive unconditional: 586, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 820, unknown conditional: 0, unknown unconditional: 820] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 53]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 52]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 40]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 26]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 39]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 27]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 24]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 41]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 22]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 28]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 31]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 34]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 32]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 33]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 57 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 655.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 120.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 445.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 10 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.8ms SsaConstructionTime, 5.5ms SatisfiabilityAnalysisTime, 23.2ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...