/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 04:24:57,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 04:24:57,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 04:24:57,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 04:24:57,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 04:24:57,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 04:24:57,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 04:24:57,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 04:24:57,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 04:24:57,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 04:24:57,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 04:24:57,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 04:24:57,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 04:24:57,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 04:24:57,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 04:24:57,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 04:24:57,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 04:24:57,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 04:24:58,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 04:24:58,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 04:24:58,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 04:24:58,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 04:24:58,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 04:24:58,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 04:24:58,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 04:24:58,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-29 04:24:58,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-29 04:24:58,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-29 04:24:58,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-29 04:24:58,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-29 04:24:58,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-29 04:24:58,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-29 04:24:58,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-29 04:24:58,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 04:24:58,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 04:24:58,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 04:24:58,050 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 04:24:58,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 04:24:58,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 04:24:58,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 04:24:58,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 04:24:58,109 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 04:24:58,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 04:24:58,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 04:24:58,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 04:24:58,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 04:24:58,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 04:24:58,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 04:24:58,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 04:24:58,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 04:24:58,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 04:24:58,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 04:24:58,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 04:24:58,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 04:24:58,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 04:24:58,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 04:24:58,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 04:24:58,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 04:24:58,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 04:24:58,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 04:24:58,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 04:24:58,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 04:24:58,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 04:24:58,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 04:24:58,116 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 04:24:58,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 04:24:58,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 04:24:58,117 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 04:24:58,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 04:24:58,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 04:24:58,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 04:24:58,549 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 04:24:58,555 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 04:24:58,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl [2021-04-29 04:24:58,558 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl' [2021-04-29 04:24:58,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 04:24:58,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 04:24:58,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 04:24:58,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 04:24:58,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 04:24:58,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 04:24:58,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 04:24:58,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 04:24:58,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 04:24:58,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/1) ... [2021-04-29 04:24:58,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 04:24:58,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 04:24:58,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 04:24:58,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 04:24:58,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (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 [2021-04-29 04:24:58,838 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 04:24:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 04:24:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 04:24:58,841 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 04:24:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 04:24:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 04:24:58,842 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 04:24:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 04:24:58,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 04:24:58,844 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 04:24:59,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 04:24:59,054 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 04:24:59,056 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 04:24:59 BoogieIcfgContainer [2021-04-29 04:24:59,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 04:24:59,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 04:24:59,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 04:24:59,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 04:24:59,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:24:58" (1/2) ... [2021-04-29 04:24:59,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d81c6db and model type security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 04:24:59, skipping insertion in model container [2021-04-29 04:24:59,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 04:24:59" (2/2) ... [2021-04-29 04:24:59,064 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.bpl [2021-04-29 04:24:59,071 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 04:24:59,076 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 04:24:59,077 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 04:24:59,118 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-04-29 04:24:59,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-29 04:24:59,203 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 04:24:59,203 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 04:24:59,203 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 04:24:59,203 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 04:24:59,203 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 04:24:59,204 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 04:24:59,204 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 04:24:59,204 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 04:24:59,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 72 flow [2021-04-29 04:24:59,293 INFO L129 PetriNetUnfolder]: 4/26 cut-off events. [2021-04-29 04:24:59,293 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 04:24:59,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2021-04-29 04:24:59,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 72 flow [2021-04-29 04:24:59,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 24 transitions, 60 flow [2021-04-29 04:24:59,309 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:24:59,328 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 24 transitions, 60 flow [2021-04-29 04:24:59,332 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 24 transitions, 60 flow [2021-04-29 04:24:59,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 60 flow [2021-04-29 04:24:59,345 INFO L129 PetriNetUnfolder]: 4/24 cut-off events. [2021-04-29 04:24:59,345 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 04:24:59,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 4/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 34 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2021-04-29 04:24:59,349 INFO L146 LiptonReduction]: Number of co-enabled transitions 198 [2021-04-29 04:25:00,950 INFO L158 LiptonReduction]: Checked pairs total: 240 [2021-04-29 04:25:00,951 INFO L160 LiptonReduction]: Total number of compositions: 29 [2021-04-29 04:25:00,954 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1646 [2021-04-29 04:25:00,969 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-04-29 04:25:00,969 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 04:25:00,969 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:25:00,970 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:25:00,970 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:25:00,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:25:00,978 INFO L82 PathProgramCache]: Analyzing trace with hash 5391760, now seen corresponding path program 1 times [2021-04-29 04:25:00,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:25:00,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124772589] [2021-04-29 04:25:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:25:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:25:01,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:25:01,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:25:01,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:25:01,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-29 04:25:01,194 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-04-29 04:25:01,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 04:25:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:25:01,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124772589] [2021-04-29 04:25:01,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:25:01,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:25:01,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411522953] [2021-04-29 04:25:01,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 04:25:01,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:25:01,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 04:25:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 04:25:01,239 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 57 [2021-04-29 04:25:01,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2021-04-29 04:25:01,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:25:01,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 57 [2021-04-29 04:25:01,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:25:01,312 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2021-04-29 04:25:01,312 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-04-29 04:25:01,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 41 events. 3/41 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 160 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 59. Up to 14 conditions per place. [2021-04-29 04:25:01,315 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 2 selfloop transitions, 2 changer transitions 17/25 dead transitions. [2021-04-29 04:25:01,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 82 flow [2021-04-29 04:25:01,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 04:25:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 04:25:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2021-04-29 04:25:01,331 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7543859649122807 [2021-04-29 04:25:01,332 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 172 transitions. [2021-04-29 04:25:01,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 172 transitions. [2021-04-29 04:25:01,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:25:01,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 172 transitions. [2021-04-29 04:25:01,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2021-04-29 04:25:01,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2021-04-29 04:25:01,348 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2021-04-29 04:25:01,350 INFO L185 Difference]: Start difference. First operand has 29 places, 23 transitions, 58 flow. Second operand 4 states and 172 transitions. [2021-04-29 04:25:01,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 82 flow [2021-04-29 04:25:01,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-29 04:25:01,358 INFO L241 Difference]: Finished difference. Result has 30 places, 8 transitions, 30 flow [2021-04-29 04:25:01,360 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=30, PETRI_PLACES=30, PETRI_TRANSITIONS=8} [2021-04-29 04:25:01,361 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2021-04-29 04:25:01,361 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:25:01,362 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 8 transitions, 30 flow [2021-04-29 04:25:01,363 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 8 transitions, 30 flow [2021-04-29 04:25:01,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 8 transitions, 30 flow [2021-04-29 04:25:01,366 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2021-04-29 04:25:01,366 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 04:25:01,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 10 events. 2/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 16. Up to 4 conditions per place. [2021-04-29 04:25:01,367 INFO L146 LiptonReduction]: Number of co-enabled transitions 6 [2021-04-29 04:25:01,368 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:25:01,368 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:25:01,368 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-04-29 04:25:01,371 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 30 flow [2021-04-29 04:25:01,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2021-04-29 04:25:01,371 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:25:01,371 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:25:01,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 04:25:01,372 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:25:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:25:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash 12541600, now seen corresponding path program 2 times [2021-04-29 04:25:01,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:25:01,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149896146] [2021-04-29 04:25:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:25:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:25:01,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:25:01,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:25:01,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:25:01,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-29 04:25:01,414 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-04-29 04:25:01,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 04:25:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:25:01,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149896146] [2021-04-29 04:25:01,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:25:01,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:25:01,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936094838] [2021-04-29 04:25:01,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 04:25:01,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:25:01,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 04:25:01,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 04:25:01,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 57 [2021-04-29 04:25:01,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 8 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2021-04-29 04:25:01,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:25:01,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 57 [2021-04-29 04:25:01,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:25:01,452 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-04-29 04:25:01,453 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-04-29 04:25:01,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 9 events. 2/9 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2021-04-29 04:25:01,453 INFO L132 encePairwiseOnDemand]: 53/57 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-04-29 04:25:01,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 46 flow [2021-04-29 04:25:01,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 04:25:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 04:25:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2021-04-29 04:25:01,457 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7280701754385965 [2021-04-29 04:25:01,457 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 166 transitions. [2021-04-29 04:25:01,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 166 transitions. [2021-04-29 04:25:01,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:25:01,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 166 transitions. [2021-04-29 04:25:01,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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) [2021-04-29 04:25:01,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2021-04-29 04:25:01,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2021-04-29 04:25:01,462 INFO L185 Difference]: Start difference. First operand has 14 places, 8 transitions, 30 flow. Second operand 4 states and 166 transitions. [2021-04-29 04:25:01,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 46 flow [2021-04-29 04:25:01,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 9 transitions, 42 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:25:01,463 INFO L241 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-04-29 04:25:01,463 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2021-04-29 04:25:01,464 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, -14 predicate places. [2021-04-29 04:25:01,464 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:25:01,465 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 0 transitions, 0 flow [2021-04-29 04:25:01,465 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 0 transitions, 0 flow [2021-04-29 04:25:01,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 04:25:01,466 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 04:25:01,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:25:01,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 04:25:01,466 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 04:25:01,466 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:25:01,467 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:25:01,467 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-04-29 04:25:01,469 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 04:25:01,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2021-04-29 04:25:01,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 04:25:01,474 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 04:25:01 BasicIcfg [2021-04-29 04:25:01,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 04:25:01,476 INFO L168 Benchmark]: Toolchain (without parser) took 2879.70 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 271.0 MB in the beginning and 282.9 MB in the end (delta: -12.0 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.0 GB. [2021-04-29 04:25:01,477 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.78 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 04:25:01,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.47 ms. Allocated memory is still 302.0 MB. Free memory was 285.2 MB in the beginning and 283.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 04:25:01,479 INFO L168 Benchmark]: Boogie Preprocessor took 23.05 ms. Allocated memory is still 302.0 MB. Free memory was 283.7 MB in the beginning and 282.9 MB in the end (delta: 834.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 04:25:01,479 INFO L168 Benchmark]: RCFGBuilder took 328.34 ms. Allocated memory is still 302.0 MB. Free memory was 282.9 MB in the beginning and 278.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-04-29 04:25:01,480 INFO L168 Benchmark]: TraceAbstraction took 2416.90 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 278.2 MB in the beginning and 282.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.0 GB. [2021-04-29 04:25:01,484 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 0.78 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.47 ms. Allocated memory is still 302.0 MB. Free memory was 285.2 MB in the beginning and 283.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.05 ms. Allocated memory is still 302.0 MB. Free memory was 283.7 MB in the beginning and 282.9 MB in the end (delta: 834.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 328.34 ms. Allocated memory is still 302.0 MB. Free memory was 282.9 MB in the beginning and 278.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2416.90 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 278.2 MB in the beginning and 282.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1618.6ms, 27 PlacesBefore, 29 PlacesAfterwards, 24 TransitionsBefore, 23 TransitionsAfterwards, 198 CoEnabledTransitionPairs, 5 FixpointIterations, 1 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 3 ChoiceCompositions, 29 TotalNumberOfCompositions, 240 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 240, positive: 240, positive conditional: 240, positive unconditional: 0, 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: 136, positive: 136, positive conditional: 0, positive unconditional: 136, 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: 136, positive: 136, positive conditional: 0, positive unconditional: 136, 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: 136, positive: 136, positive conditional: 0, positive unconditional: 136, 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: 240, positive: 104, positive conditional: 104, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 136, unknown conditional: 136, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 128, Positive conditional cache size: 128, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8ms, 30 PlacesBefore, 14 PlacesAfterwards, 8 TransitionsBefore, 8 TransitionsAfterwards, 6 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 128, Positive conditional cache size: 128, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6ms, 15 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.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: 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] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 128, Positive conditional cache size: 128, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 69]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2279.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 166.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1758.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 21 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 8, 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: 6.1ms SsaConstructionTime, 36.3ms SatisfiabilityAnalysisTime, 146.2ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...