/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_BA.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:10:23,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:10:23,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:10:23,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:10:23,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:10:23,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:10:23,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:10:23,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:10:23,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:10:23,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:10:23,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:10:23,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-03-24 22:10:23,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:10:23,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:10:23,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:10:23,946 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 22:10:23,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:10:23,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:10:23,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:10:23,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:10:23,972 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:10:23,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:10:23,972 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:10:23,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:10:23,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:10:23,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:10:23,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:10:23,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:10:23,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:10:23,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:10:23,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:10:23,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:10:23,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:10:23,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:10:23,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:10:23,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:10:23,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:10:24,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:10:24,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:10:24,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:10:24,221 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:10:24,221 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:10:24,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/LBE_bigexample_safe_BA.bpl [2021-03-24 22:10:24,222 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/LBE_bigexample_safe_BA.bpl' [2021-03-24 22:10:24,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:10:24,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:10:24,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:10:24,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:10:24,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:10:24,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:10:24,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:10:24,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:10:24,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:10:24,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/1) ... [2021-03-24 22:10:24,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:10:24,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:10:24,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:10:24,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:10:24,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (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 22:10:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-03-24 22:10:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-03-24 22:10:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:10:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:10:24,315 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 22:10:24,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:10:24,424 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:10:24,425 INFO L202 PluginConnector]: Adding new model LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:10:24 BoogieIcfgContainer [2021-03-24 22:10:24,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:10:24,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:10:24,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:10:24,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:10:24,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:10:24" (1/2) ... [2021-03-24 22:10:24,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e2a53d and model type LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:10:24, skipping insertion in model container [2021-03-24 22:10:24,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:10:24" (2/2) ... [2021-03-24 22:10:24,429 INFO L111 eAbstractionObserver]: Analyzing ICFG LBE_bigexample_safe_BA.bpl [2021-03-24 22:10:24,433 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:10:24,436 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2021-03-24 22:10:24,436 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:10:24,483 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-03-24 22:10:24,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2021-03-24 22:10:24,524 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:10:24,525 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:10:24,540 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:10:24,541 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:10:24,541 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:10:24,541 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:10:24,541 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:10:24,541 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:10:24,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 280 flow [2021-03-24 22:10:24,596 INFO L129 PetriNetUnfolder]: 17/118 cut-off events. [2021-03-24 22:10:24,596 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-24 22:10:24,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 118 events. 17/118 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 470 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 113. Up to 12 conditions per place. [2021-03-24 22:10:24,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 106 transitions, 280 flow [2021-03-24 22:10:24,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 97 transitions, 242 flow [2021-03-24 22:10:24,613 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:10:24,622 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 97 transitions, 242 flow [2021-03-24 22:10:24,624 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 97 transitions, 242 flow [2021-03-24 22:10:24,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 97 transitions, 242 flow [2021-03-24 22:10:24,644 INFO L129 PetriNetUnfolder]: 14/113 cut-off events. [2021-03-24 22:10:24,645 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-03-24 22:10:24,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 113 events. 14/113 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 488 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 113. Up to 12 conditions per place. [2021-03-24 22:10:24,649 INFO L142 LiptonReduction]: Number of co-enabled transitions 6536 [2021-03-24 22:10:25,020 INFO L154 LiptonReduction]: Checked pairs total: 4430 [2021-03-24 22:10:25,021 INFO L156 LiptonReduction]: Total number of compositions: 70 [2021-03-24 22:10:25,023 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 410 [2021-03-24 22:10:25,030 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-24 22:10:25,030 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:10:25,031 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:10:25,031 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-24 22:10:25,034 INFO L428 AbstractCegarLoop]: === Iteration 1 === [barErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, barErr6ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT, barErr6ASSERT_VIOLATIONASSERT, barErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT, barErr6ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, barErr3ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr3ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr3ASSERT_VIOLATIONASSERT, barErr8ASSERT_VIOLATIONASSERT, barErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, barErr3ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3INUSE_VIOLATION, barErr8ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr8ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr8ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, barErr3ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, barErr5ASSERT_VIOLATIONASSERT, barErr5ASSERT_VIOLATIONASSERT, barErr6ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr5ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, barErr5ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:10:25,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:10:25,043 INFO L82 PathProgramCache]: Analyzing trace with hash 91137, now seen corresponding path program 1 times [2021-03-24 22:10:25,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:10:25,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087214007] [2021-03-24 22:10:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:10:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:10:25,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:10:25,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:10:25,110 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 22:10:25,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087214007] [2021-03-24 22:10:25,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:10:25,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 22:10:25,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198062455] [2021-03-24 22:10:25,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-24 22:10:25,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:10:25,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-24 22:10:25,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-24 22:10:25,129 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 176 [2021-03-24 22:10:25,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 184 flow. Second operand has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 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 22:10:25,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:10:25,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 176 [2021-03-24 22:10:25,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:10:25,156 INFO L129 PetriNetUnfolder]: 14/55 cut-off events. [2021-03-24 22:10:25,157 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-03-24 22:10:25,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 55 events. 14/55 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 0 based on Foata normal form. 13/59 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2021-03-24 22:10:25,158 INFO L132 encePairwiseOnDemand]: 147/176 looper letters, 0 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2021-03-24 22:10:25,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 126 flow [2021-03-24 22:10:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-24 22:10:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-24 22:10:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 299 transitions. [2021-03-24 22:10:25,171 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8494318181818182 [2021-03-24 22:10:25,172 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 299 transitions. [2021-03-24 22:10:25,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 299 transitions. [2021-03-24 22:10:25,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:10:25,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 299 transitions. [2021-03-24 22:10:25,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.5) internal successors, (299), 2 states have internal predecessors, (299), 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 22:10:25,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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 22:10:25,191 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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 22:10:25,193 INFO L185 Difference]: Start difference. First operand has 72 places, 68 transitions, 184 flow. Second operand 2 states and 299 transitions. [2021-03-24 22:10:25,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 126 flow [2021-03-24 22:10:25,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 94 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-24 22:10:25,198 INFO L241 Difference]: Finished difference. Result has 36 places, 39 transitions, 94 flow [2021-03-24 22:10:25,199 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=39} [2021-03-24 22:10:25,200 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -36 predicate places. [2021-03-24 22:10:25,200 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 39 transitions, 94 flow [2021-03-24 22:10:25,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 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 22:10:25,200 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:10:25,200 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-24 22:10:25,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:10:25,201 INFO L428 AbstractCegarLoop]: === Iteration 2 === [barErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, barErr6ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT, barErr6ASSERT_VIOLATIONASSERT, barErr6ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT, barErr6ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, barErr3ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr3ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr3ASSERT_VIOLATIONASSERT, barErr8ASSERT_VIOLATIONASSERT, barErr8ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, barErr3ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3INUSE_VIOLATION, barErr8ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr7ASSERT_VIOLATIONASSERT, barErr8ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr8ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, barErr3ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr4ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, barErr5ASSERT_VIOLATIONASSERT, barErr5ASSERT_VIOLATIONASSERT, barErr6ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr5ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, barErr5ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, barErr1ASSERT_VIOLATIONASSERT, barErr2ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:10:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:10:25,201 INFO L82 PathProgramCache]: Analyzing trace with hash 90989, now seen corresponding path program 1 times [2021-03-24 22:10:25,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:10:25,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791313617] [2021-03-24 22:10:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:10:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:10:25,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:10:25,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:10:25,219 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 22:10:25,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791313617] [2021-03-24 22:10:25,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:10:25,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 22:10:25,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949120926] [2021-03-24 22:10:25,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:10:25,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:10:25,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:10:25,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:10:25,223 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 176 [2021-03-24 22:10:25,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 39 transitions, 94 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 22:10:25,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:10:25,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 176 [2021-03-24 22:10:25,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:10:25,372 INFO L129 PetriNetUnfolder]: 1385/2112 cut-off events. [2021-03-24 22:10:25,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:10:25,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 2112 events. 1385/2112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10305 event pairs, 1281 based on Foata normal form. 0/2089 useless extension candidates. Maximal degree in co-relation 3909. Up to 1793 conditions per place. [2021-03-24 22:10:25,379 INFO L132 encePairwiseOnDemand]: 166/176 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2021-03-24 22:10:25,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 104 flow [2021-03-24 22:10:25,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:10:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:10:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2021-03-24 22:10:25,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.20833333333333334 [2021-03-24 22:10:25,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2021-03-24 22:10:25,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2021-03-24 22:10:25,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:10:25,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2021-03-24 22:10:25,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 22:10:25,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:10:25,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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 22:10:25,383 INFO L185 Difference]: Start difference. First operand has 36 places, 39 transitions, 94 flow. Second operand 3 states and 110 transitions. [2021-03-24 22:10:25,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 104 flow [2021-03-24 22:10:25,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 22:10:25,384 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-24 22:10:25,385 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-24 22:10:25,385 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -43 predicate places. [2021-03-24 22:10:25,386 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2021-03-24 22:10:25,386 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 22:10:25,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:10:25,390 INFO L202 PluginConnector]: Adding new model LBE_bigexample_safe_BA.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:10:25 BasicIcfg [2021-03-24 22:10:25,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:10:25,393 INFO L168 Benchmark]: Toolchain (without parser) took 1153.84 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 236.6 MB in the beginning and 309.0 MB in the end (delta: -72.4 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:10:25,394 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 93.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:10:25,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.20 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:10:25,397 INFO L168 Benchmark]: Boogie Preprocessor took 10.66 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: 876.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:10:25,397 INFO L168 Benchmark]: RCFGBuilder took 157.58 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 241.1 MB in the end (delta: -6.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:10:25,398 INFO L168 Benchmark]: TraceAbstraction took 964.75 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 240.6 MB in the beginning and 309.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.0 GB. [2021-03-24 22:10:25,406 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 was 237.6 MB in the beginning and 237.5 MB in the end (delta: 93.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.20 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.66 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: 876.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 157.58 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 241.1 MB in the end (delta: -6.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 964.75 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 240.6 MB in the beginning and 309.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 397.0ms, 101 PlacesBefore, 72 PlacesAfterwards, 97 TransitionsBefore, 68 TransitionsAfterwards, 6536 CoEnabledTransitionPairs, 4 FixpointIterations, 0 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 70 TotalNumberOfCompositions, 4430 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4430, positive: 4430, positive conditional: 0, positive unconditional: 4430, 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: 2136, positive: 2136, positive conditional: 0, positive unconditional: 2136, 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: 2136, positive: 2136, positive conditional: 0, positive unconditional: 2136, 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: 2136, positive: 2136, positive conditional: 0, positive unconditional: 2136, 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: 4430, positive: 2294, positive conditional: 0, positive unconditional: 2294, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2136, unknown conditional: 0, unknown unconditional: 2136] , Statistics on independence cache: Total cache size (in pairs): 186, Positive cache size: 186, Positive conditional cache size: 0, Positive unconditional cache size: 186, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 40]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 43]: 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: 41]: 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: 42]: 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: 35]: 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: 23]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 864.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 239.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 486.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 13 SDslu, 0 SDs, 0 SdLazy, 13 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 2.5ms SsaConstructionTime, 7.1ms SatisfiabilityAnalysisTime, 26.3ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...