/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 19:45:54,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 19:45:54,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 19:45:54,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 19:45:54,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 19:45:54,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 19:45:54,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 19:45:54,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 19:45:54,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 19:45:54,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 19:45:54,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 19:45:54,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 19:45:54,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 19:45:54,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 19:45:54,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 19:45:54,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 19:45:54,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 19:45:54,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 19:45:54,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 19:45:54,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 19:45:54,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 19:45:54,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 19:45:54,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 19:45:54,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 19:45:54,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 19:45:54,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 19:45:54,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 19:45:54,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 19:45:54,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 19:45:54,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 19:45:54,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 19:45:54,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 19:45:54,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 19:45:54,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 19:45:54,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 19:45:54,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 19:45:54,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 19:45:54,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 19:45:54,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 19:45:54,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 19:45:54,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 19:45:54,131 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-RepeatedSemanticLbe.epf [2021-03-25 19:45:54,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 19:45:54,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 19:45:54,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 19:45:54,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 19:45:54,152 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 19:45:54,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 19:45:54,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 19:45:54,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 19:45:54,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 19:45:54,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 19:45:54,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 19:45:54,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 19:45:54,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 19:45:54,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 19:45:54,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 19:45:54,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 19:45:54,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 19:45:54,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 19:45:54,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 19:45:54,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 19:45:54,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 19:45:54,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 19:45:54,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 19:45:54,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 19:45:54,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 19:45:54,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 19:45:54,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 19:45:54,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 19:45:54,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 19:45:54,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 19:45:54,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 19:45:54,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 19:45:54,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 19:45:54,459 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 19:45:54,460 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 19:45:54,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl [2021-03-25 19:45:54,464 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/simple-equiv.wvr.bpl' [2021-03-25 19:45:54,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 19:45:54,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 19:45:54,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 19:45:54,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 19:45:54,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 19:45:54,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 19:45:54,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 19:45:54,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 19:45:54,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 19:45:54,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/1) ... [2021-03-25 19:45:54,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 19:45:54,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 19:45:54,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 19:45:54,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 19:45:54,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (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 [2021-03-25 19:45:54,620 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 19:45:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 19:45:54,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 19:45:54,622 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 19:45:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 19:45:54,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 19:45:54,623 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 19:45:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 19:45:54,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 19:45:54,624 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 19:45:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 19:45:54,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 19:45:54,625 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 19:45:54,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 19:45:54,763 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 19:45:54,764 INFO L202 PluginConnector]: Adding new model simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:45:54 BoogieIcfgContainer [2021-03-25 19:45:54,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 19:45:54,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 19:45:54,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 19:45:54,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 19:45:54,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:45:54" (1/2) ... [2021-03-25 19:45:54,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69374020 and model type simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:45:54, skipping insertion in model container [2021-03-25 19:45:54,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:45:54" (2/2) ... [2021-03-25 19:45:54,770 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-equiv.wvr.bpl [2021-03-25 19:45:54,774 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 19:45:54,777 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 19:45:54,778 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 19:45:54,808 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 19:45:54,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 19:45:54,841 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 19:45:54,841 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 19:45:54,841 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 19:45:54,842 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 19:45:54,842 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 19:45:54,842 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 19:45:54,842 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 19:45:54,842 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 19:45:54,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 23 transitions, 70 flow [2021-03-25 19:45:54,875 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 19:45:54,876 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 19:45:54,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 20 events. 0/20 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:45:54,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 23 transitions, 70 flow [2021-03-25 19:45:54,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 18 transitions, 54 flow [2021-03-25 19:45:54,882 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:45:54,904 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 18 transitions, 54 flow [2021-03-25 19:45:54,910 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 18 transitions, 54 flow [2021-03-25 19:45:54,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 18 transitions, 54 flow [2021-03-25 19:45:54,933 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 19:45:54,933 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 19:45:54,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 0/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:45:54,935 INFO L142 LiptonReduction]: Number of co-enabled transitions 84 [2021-03-25 19:45:55,206 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-25 19:45:55,206 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 19:45:55,208 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 327 [2021-03-25 19:45:55,226 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 19:45:55,226 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 19:45:55,226 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:45:55,227 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:45:55,227 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:45:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:45:55,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1792197476, now seen corresponding path program 1 times [2021-03-25 19:45:55,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:45:55,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798205466] [2021-03-25 19:45:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:45:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:45:55,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:45:55,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:45:55,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:45:55,449 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 19:45:55,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:45:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:45:55,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798205466] [2021-03-25 19:45:55,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:45:55,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:45:55,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740062380] [2021-03-25 19:45:55,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:45:55,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:45:55,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:45:55,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:45:55,491 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2021-03-25 19:45:55,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 11 transitions, 40 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-25 19:45:55,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:45:55,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2021-03-25 19:45:55,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:45:55,545 INFO L129 PetriNetUnfolder]: 4/22 cut-off events. [2021-03-25 19:45:55,546 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 19:45:55,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 22 events. 4/22 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 30. Up to 9 conditions per place. [2021-03-25 19:45:55,551 INFO L132 encePairwiseOnDemand]: 25/30 looper letters, 3 selfloop transitions, 5 changer transitions 3/17 dead transitions. [2021-03-25 19:45:55,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 74 flow [2021-03-25 19:45:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:45:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:45:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2021-03-25 19:45:55,561 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2021-03-25 19:45:55,562 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 82 transitions. [2021-03-25 19:45:55,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 82 transitions. [2021-03-25 19:45:55,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:45:55,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 82 transitions. [2021-03-25 19:45:55,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-03-25 19:45:55,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-25 19:45:55,577 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-25 19:45:55,579 INFO L185 Difference]: Start difference. First operand has 21 places, 11 transitions, 40 flow. Second operand 5 states and 82 transitions. [2021-03-25 19:45:55,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 74 flow [2021-03-25 19:45:55,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 62 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 19:45:55,585 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 61 flow [2021-03-25 19:45:55,586 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2021-03-25 19:45:55,587 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2021-03-25 19:45:55,587 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:45:55,587 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 14 transitions, 61 flow [2021-03-25 19:45:55,588 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 14 transitions, 61 flow [2021-03-25 19:45:55,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 14 transitions, 61 flow [2021-03-25 19:45:55,598 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2021-03-25 19:45:55,599 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-03-25 19:45:55,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 19 events. 3/19 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 27. Up to 9 conditions per place. [2021-03-25 19:45:55,600 INFO L142 LiptonReduction]: Number of co-enabled transitions 10 [2021-03-25 19:45:55,604 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:45:55,604 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:45:55,604 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 19:45:55,607 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 61 flow [2021-03-25 19:45:55,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-25 19:45:55,607 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:45:55,608 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:45:55,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 19:45:55,608 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:45:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:45:55,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1534572596, now seen corresponding path program 2 times [2021-03-25 19:45:55,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:45:55,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118963896] [2021-03-25 19:45:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:45:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:45:55,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:45:55,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:45:55,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:45:55,677 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 19:45:55,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:45:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:45:55,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118963896] [2021-03-25 19:45:55,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:45:55,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:45:55,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128511538] [2021-03-25 19:45:55,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:45:55,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:45:55,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:45:55,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:45:55,684 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2021-03-25 19:45:55,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-25 19:45:55,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:45:55,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2021-03-25 19:45:55,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:45:55,711 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-25 19:45:55,711 INFO L130 PetriNetUnfolder]: For 15/21 co-relation queries the response was YES. [2021-03-25 19:45:55,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 23 events. 2/23 cut-off events. For 15/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 3/25 useless extension candidates. Maximal degree in co-relation 44. Up to 11 conditions per place. [2021-03-25 19:45:55,711 INFO L132 encePairwiseOnDemand]: 25/30 looper letters, 3 selfloop transitions, 2 changer transitions 5/16 dead transitions. [2021-03-25 19:45:55,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 93 flow [2021-03-25 19:45:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:45:55,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:45:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2021-03-25 19:45:55,713 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.54 [2021-03-25 19:45:55,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 81 transitions. [2021-03-25 19:45:55,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 81 transitions. [2021-03-25 19:45:55,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:45:55,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 81 transitions. [2021-03-25 19:45:55,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-03-25 19:45:55,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-25 19:45:55,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-25 19:45:55,716 INFO L185 Difference]: Start difference. First operand has 20 places, 14 transitions, 61 flow. Second operand 5 states and 81 transitions. [2021-03-25 19:45:55,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 93 flow [2021-03-25 19:45:55,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 85 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 19:45:55,717 INFO L241 Difference]: Finished difference. Result has 24 places, 11 transitions, 50 flow [2021-03-25 19:45:55,717 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=50, PETRI_PLACES=24, PETRI_TRANSITIONS=11} [2021-03-25 19:45:55,718 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2021-03-25 19:45:55,718 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:45:55,718 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 11 transitions, 50 flow [2021-03-25 19:45:55,718 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 11 transitions, 50 flow [2021-03-25 19:45:55,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 11 transitions, 50 flow [2021-03-25 19:45:55,721 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-25 19:45:55,721 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 19:45:55,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 13 events. 1/13 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 5 event pairs, 1 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 21. Up to 6 conditions per place. [2021-03-25 19:45:55,722 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 19:45:55,723 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:45:55,723 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:45:55,723 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 19:45:55,724 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 11 transitions, 50 flow [2021-03-25 19:45:55,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-25 19:45:55,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:45:55,724 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:45:55,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 19:45:55,724 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:45:55,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:45:55,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1943400780, now seen corresponding path program 3 times [2021-03-25 19:45:55,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:45:55,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155393221] [2021-03-25 19:45:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:45:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:45:55,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:45:55,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:45:55,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:45:55,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:45:55,803 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 19:45:55,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:45:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:45:55,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155393221] [2021-03-25 19:45:55,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:45:55,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:45:55,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456324163] [2021-03-25 19:45:55,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:45:55,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:45:55,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:45:55,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:45:55,810 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2021-03-25 19:45:55,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 11 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-25 19:45:55,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:45:55,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2021-03-25 19:45:55,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:45:55,841 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-25 19:45:55,842 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-25 19:45:55,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 13 events. 1/13 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 24. Up to 6 conditions per place. [2021-03-25 19:45:55,842 INFO L132 encePairwiseOnDemand]: 25/30 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-03-25 19:45:55,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 12 transitions, 74 flow [2021-03-25 19:45:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:45:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:45:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-03-25 19:45:55,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2021-03-25 19:45:55,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-03-25 19:45:55,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-03-25 19:45:55,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:45:55,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-03-25 19:45:55,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2021-03-25 19:45:55,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-25 19:45:55,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2021-03-25 19:45:55,849 INFO L185 Difference]: Start difference. First operand has 21 places, 11 transitions, 50 flow. Second operand 5 states and 77 transitions. [2021-03-25 19:45:55,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 12 transitions, 74 flow [2021-03-25 19:45:55,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 48 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-25 19:45:55,852 INFO L241 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2021-03-25 19:45:55,853 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2021-03-25 19:45:55,853 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, -4 predicate places. [2021-03-25 19:45:55,854 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:45:55,854 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 0 transitions, 0 flow [2021-03-25 19:45:55,855 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 0 transitions, 0 flow [2021-03-25 19:45:55,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 19:45:55,855 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 19:45:55,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 19:45:55,855 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. [2021-03-25 19:45:55,855 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 19:45:55,856 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:45:55,856 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:45:55,856 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 19:45:55,860 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 19:45:55,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2021-03-25 19:45:55,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 19:45:55,868 INFO L202 PluginConnector]: Adding new model simple-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:45:55 BasicIcfg [2021-03-25 19:45:55,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 19:45:55,869 INFO L168 Benchmark]: Toolchain (without parser) took 1363.56 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 236.7 MB in the beginning and 311.5 MB in the end (delta: -74.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.0 GB. [2021-03-25 19:45:55,869 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:45:55,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.92 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 19:45:55,870 INFO L168 Benchmark]: Boogie Preprocessor took 14.71 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.3 MB in the end (delta: 841.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:45:55,870 INFO L168 Benchmark]: RCFGBuilder took 217.51 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 239.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. [2021-03-25 19:45:55,871 INFO L168 Benchmark]: TraceAbstraction took 1102.32 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 238.7 MB in the beginning and 311.5 MB in the end (delta: -72.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.0 GB. [2021-03-25 19:45:55,872 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 0.16 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.92 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.71 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.3 MB in the end (delta: 841.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 217.51 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 239.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1102.32 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 238.7 MB in the beginning and 311.5 MB in the end (delta: -72.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 296.7ms, 28 PlacesBefore, 21 PlacesAfterwards, 18 TransitionsBefore, 11 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 4 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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: 38, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 38, unknown conditional: 0, unknown unconditional: 38] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 16.4ms, 21 PlacesBefore, 20 PlacesAfterwards, 14 TransitionsBefore, 14 TransitionsAfterwards, 10 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 4.4ms, 24 PlacesBefore, 21 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 2 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 1.0ms, 17 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1023.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 183.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 379.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 71 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=1, InterpolantAutomatonStates: 15, 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: 26.7ms SsaConstructionTime, 51.6ms SatisfiabilityAnalysisTime, 224.7ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 186 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...