/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/weaver-benchmarks/generated/security.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 23:03:31,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 23:03:31,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 23:03:31,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 23:03:31,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 23:03:31,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 23:03:31,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 23:03:31,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 23:03:31,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 23:03:31,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 23:03:31,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 23:03:31,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 23:03:31,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 23:03:31,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 23:03:31,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 23:03:31,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 23:03:31,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 23:03:31,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 23:03:31,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 23:03:31,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 23:03:31,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 23:03:31,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 23:03:32,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 23:03:32,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 23:03:32,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 23:03:32,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 23:03:32,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 23:03:32,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 23:03:32,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 23:03:32,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 23:03:32,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 23:03:32,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 23:03:32,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 23:03:32,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 23:03:32,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 23:03:32,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 23:03:32,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 23:03:32,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 23:03:32,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 23:03:32,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 23:03:32,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 23:03:32,016 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 [2021-03-11 23:03:32,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 23:03:32,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 23:03:32,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 23:03:32,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 23:03:32,051 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 23:03:32,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 23:03:32,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 23:03:32,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 23:03:32,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 23:03:32,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 23:03:32,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 23:03:32,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 23:03:32,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 23:03:32,053 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 23:03:32,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 23:03:32,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 23:03:32,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 23:03:32,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 23:03:32,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 23:03:32,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 23:03:32,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 23:03:32,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 23:03:32,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 23:03:32,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 23:03:32,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 23:03:32,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 23:03:32,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 23:03:32,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 23:03:32,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 23:03:32,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 23:03:32,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 23:03:32,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 23:03:32,376 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 23:03:32,377 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 23:03:32,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl [2021-03-11 23:03:32,384 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl' [2021-03-11 23:03:32,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 23:03:32,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 23:03:32,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 23:03:32,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 23:03:32,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 23:03:32,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 23:03:32,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 23:03:32,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 23:03:32,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 23:03:32,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... [2021-03-11 23:03:32,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 23:03:32,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 23:03:32,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 23:03:32,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 23:03:32,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 23:03:32,514 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 23:03:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 23:03:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 23:03:32,514 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 23:03:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 23:03:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 23:03:32,515 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 23:03:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 23:03:32,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 23:03:32,516 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 23:03:32,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 23:03:32,630 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 23:03:32,632 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:03:32 BoogieIcfgContainer [2021-03-11 23:03:32,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 23:03:32,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 23:03:32,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 23:03:32,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 23:03:32,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 11:03:32" (1/2) ... [2021-03-11 23:03:32,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de7d302 and model type security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:03:32, skipping insertion in model container [2021-03-11 23:03:32,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:03:32" (2/2) ... [2021-03-11 23:03:32,638 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.bpl [2021-03-11 23:03:32,642 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 23:03:32,645 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 23:03:32,646 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 23:03:32,673 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-11 23:03:32,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 23:03:32,705 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 23:03:32,706 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 23:03:32,706 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 23:03:32,706 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 23:03:32,706 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 23:03:32,706 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 23:03:32,706 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 23:03:32,706 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 23:03:32,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 72 flow [2021-03-11 23:03:32,733 INFO L129 PetriNetUnfolder]: 4/26 cut-off events. [2021-03-11 23:03:32,734 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 23:03:32,737 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. [2021-03-11 23:03:32,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 72 flow [2021-03-11 23:03:32,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 24 transitions, 60 flow [2021-03-11 23:03:32,762 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 23:03:32,769 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 24 transitions, 60 flow [2021-03-11 23:03:32,772 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 24 transitions, 60 flow [2021-03-11 23:03:32,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 60 flow [2021-03-11 23:03:32,780 INFO L129 PetriNetUnfolder]: 4/24 cut-off events. [2021-03-11 23:03:32,781 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 23:03:32,781 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 4. Compared 31 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. [2021-03-11 23:03:32,783 INFO L116 LiptonReduction]: Number of co-enabled transitions 198 [2021-03-11 23:03:33,546 INFO L131 LiptonReduction]: Checked pairs total: 180 [2021-03-11 23:03:33,546 INFO L133 LiptonReduction]: Total number of compositions: 25 [2021-03-11 23:03:33,549 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 790 [2021-03-11 23:03:33,562 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-11 23:03:33,562 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 23:03:33,562 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:03:33,563 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:03:33,563 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 23:03:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:03:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash 9169459, now seen corresponding path program 1 times [2021-03-11 23:03:33,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:03:33,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943747686] [2021-03-11 23:03:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:03:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:03:33,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:03:33,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:03:33,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:03:33,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 23:03:33,763 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 23:03:33,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 23:03:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:03:33,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943747686] [2021-03-11 23:03:33,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:03:33,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 23:03:33,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083922481] [2021-03-11 23:03:33,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 23:03:33,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:03:33,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 23:03:33,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 23:03:33,797 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 23:03:33,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 26 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:33,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:03:33,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 23:03:33,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:03:33,843 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-11 23:03:33,843 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 23:03:33,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 11 events. 0/11 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 23:03:33,844 INFO L132 encePairwiseOnDemand]: 50/53 looper letters, 2 selfloop transitions, 1 changer transitions 1/8 dead transitions. [2021-03-11 23:03:33,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 8 transitions, 36 flow [2021-03-11 23:03:33,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 23:03:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 23:03:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-11 23:03:33,857 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6462264150943396 [2021-03-11 23:03:33,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-11 23:03:33,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-11 23:03:33,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:03:33,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-11 23:03:33,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:33,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:33,873 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:33,875 INFO L185 Difference]: Start difference. First operand has 14 places, 7 transitions, 26 flow. Second operand 4 states and 137 transitions. [2021-03-11 23:03:33,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 8 transitions, 36 flow [2021-03-11 23:03:33,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 8 transitions, 28 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 23:03:33,879 INFO L241 Difference]: Finished difference. Result has 15 places, 7 transitions, 25 flow [2021-03-11 23:03:33,881 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=25, PETRI_PLACES=15, PETRI_TRANSITIONS=7} [2021-03-11 23:03:33,881 INFO L335 CegarLoopForPetriNet]: 14 programPoint places, 1 predicate places. [2021-03-11 23:03:33,881 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 7 transitions, 25 flow [2021-03-11 23:03:33,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:33,882 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 23:03:33,882 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 23:03:33,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 23:03:33,882 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 23:03:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 23:03:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash 8996479, now seen corresponding path program 2 times [2021-03-11 23:03:33,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 23:03:33,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453201905] [2021-03-11 23:03:33,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 23:03:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 23:03:33,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:03:33,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 23:03:33,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 23:03:33,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 23:03:33,961 INFO L142 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-03-11 23:03:33,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 23:03:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 23:03:33,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453201905] [2021-03-11 23:03:33,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 23:03:33,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 23:03:33,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860655958] [2021-03-11 23:03:33,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 23:03:33,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 23:03:33,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 23:03:33,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 23:03:33,982 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2021-03-11 23:03:33,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 7 transitions, 25 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:33,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 23:03:33,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2021-03-11 23:03:33,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 23:03:34,008 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-11 23:03:34,008 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-11 23:03:34,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 8 events. 0/8 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 23:03:34,008 INFO L132 encePairwiseOnDemand]: 50/53 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-11 23:03:34,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 32 flow [2021-03-11 23:03:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 23:03:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 23:03:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2021-03-11 23:03:34,013 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2021-03-11 23:03:34,014 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 136 transitions. [2021-03-11 23:03:34,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 136 transitions. [2021-03-11 23:03:34,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 23:03:34,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 136 transitions. [2021-03-11 23:03:34,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:34,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:34,018 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:34,020 INFO L185 Difference]: Start difference. First operand has 15 places, 7 transitions, 25 flow. Second operand 4 states and 136 transitions. [2021-03-11 23:03:34,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 32 flow [2021-03-11 23:03:34,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 23:03:34,022 INFO L241 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-03-11 23:03:34,024 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2021-03-11 23:03:34,024 INFO L335 CegarLoopForPetriNet]: 14 programPoint places, 1 predicate places. [2021-03-11 23:03:34,025 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2021-03-11 23:03:34,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 23:03:34,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 23:03:34,028 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:03:34 BasicIcfg [2021-03-11 23:03:34,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 23:03:34,029 INFO L168 Benchmark]: Toolchain (without parser) took 1611.42 ms. Allocated memory is still 358.6 MB. Free memory was 338.9 MB in the beginning and 206.1 MB in the end (delta: 132.8 MB). Peak memory consumption was 134.3 MB. Max. memory is 16.0 GB. [2021-03-11 23:03:34,029 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 358.6 MB. Free memory is still 340.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 23:03:34,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.82 ms. Allocated memory is still 358.6 MB. Free memory was 338.5 MB in the beginning and 337.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 23:03:34,030 INFO L168 Benchmark]: Boogie Preprocessor took 11.53 ms. Allocated memory is still 358.6 MB. Free memory was 337.1 MB in the beginning and 336.1 MB in the end (delta: 976.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 23:03:34,031 INFO L168 Benchmark]: RCFGBuilder took 174.82 ms. Allocated memory is still 358.6 MB. Free memory was 336.1 MB in the beginning and 325.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 23:03:34,031 INFO L168 Benchmark]: TraceAbstraction took 1394.92 ms. Allocated memory is still 358.6 MB. Free memory was 325.2 MB in the beginning and 206.1 MB in the end (delta: 119.1 MB). Peak memory consumption was 119.6 MB. Max. memory is 16.0 GB. [2021-03-11 23:03:34,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 358.6 MB. Free memory is still 340.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.82 ms. Allocated memory is still 358.6 MB. Free memory was 338.5 MB in the beginning and 337.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.53 ms. Allocated memory is still 358.6 MB. Free memory was 337.1 MB in the beginning and 336.1 MB in the end (delta: 976.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 174.82 ms. Allocated memory is still 358.6 MB. Free memory was 336.1 MB in the beginning and 325.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1394.92 ms. Allocated memory is still 358.6 MB. Free memory was 325.2 MB in the beginning and 206.1 MB in the end (delta: 119.1 MB). Peak memory consumption was 119.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 774.9ms, 27 PlacesBefore, 14 PlacesAfterwards, 24 TransitionsBefore, 7 TransitionsAfterwards, 198 CoEnabledTransitionPairs, 4 FixpointIterations, 1 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 25 TotalNumberOfCompositions, 180 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 180, positive: 180, positive conditional: 0, positive unconditional: 180, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 147, positive: 147, positive conditional: 0, positive unconditional: 147, 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: 147, positive: 147, positive conditional: 0, positive unconditional: 147, 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: 180, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 147, unknown conditional: 0, unknown unconditional: 147] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1324.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 134.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 851.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: 4.8ms SsaConstructionTime, 53.4ms SatisfiabilityAnalysisTime, 164.4ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 82 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...