/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy8.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 08:11:21,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 08:11:21,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 08:11:21,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 08:11:21,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 08:11:21,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 08:11:21,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 08:11:21,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 08:11:21,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 08:11:21,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 08:11:21,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 08:11:21,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 08:11:21,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 08:11:21,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 08:11:21,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 08:11:21,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 08:11:21,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 08:11:21,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 08:11:21,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 08:11:21,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 08:11:21,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 08:11:21,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 08:11:21,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 08:11:21,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 08:11:21,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 08:11:21,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 08:11:21,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 08:11:21,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 08:11:21,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 08:11:21,279 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 08:11:21,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 08:11:21,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 08:11:21,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 08:11:21,284 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 08:11:21,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 08:11:21,285 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 08:11:21,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 08:11:21,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 08:11:21,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 08:11:21,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 08:11:21,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 08:11:21,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 08:11:21,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 08:11:21,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 08:11:21,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 08:11:21,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 08:11:21,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 08:11:21,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 08:11:21,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 08:11:21,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 08:11:21,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 08:11:21,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 08:11:21,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 08:11:21,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 08:11:21,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 08:11:21,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 08:11:21,291 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 08:11:21,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 08:11:21,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 08:11:21,291 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 08:11:21,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 08:11:21,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 08:11:21,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 08:11:21,736 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 08:11:21,740 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 08:11:21,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy8.wvr.bpl [2021-04-29 08:11:21,741 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy8.wvr.bpl' [2021-04-29 08:11:21,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 08:11:21,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 08:11:21,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 08:11:21,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 08:11:21,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 08:11:21,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 08:11:21,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 08:11:21,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 08:11:21,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 08:11:21,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... [2021-04-29 08:11:21,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 08:11:21,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 08:11:21,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 08:11:21,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 08:11:21,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 08:11:22,010 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 08:11:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 08:11:22,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 08:11:22,014 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 08:11:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 08:11:22,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 08:11:22,015 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 08:11:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 08:11:22,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 08:11:22,016 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 08:11:22,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 08:11:22,192 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-29 08:11:22,194 INFO L202 PluginConnector]: Adding new model easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 08:11:22 BoogieIcfgContainer [2021-04-29 08:11:22,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 08:11:22,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 08:11:22,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 08:11:22,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 08:11:22,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:21" (1/2) ... [2021-04-29 08:11:22,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383da062 and model type easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 08:11:22, skipping insertion in model container [2021-04-29 08:11:22,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 08:11:22" (2/2) ... [2021-04-29 08:11:22,203 INFO L111 eAbstractionObserver]: Analyzing ICFG easy8.wvr.bpl [2021-04-29 08:11:22,210 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 08:11:22,215 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 08:11:22,217 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 08:11:22,251 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-04-29 08:11:22,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-29 08:11:22,349 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 08:11:22,350 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 08:11:22,350 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 08:11:22,350 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 08:11:22,356 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 08:11:22,356 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 08:11:22,357 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 08:11:22,357 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 08:11:22,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 44 flow [2021-04-29 08:11:22,441 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-04-29 08:11:22,443 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:22,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 0/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 08:11:22,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 14 transitions, 44 flow [2021-04-29 08:11:22,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 10 transitions, 32 flow [2021-04-29 08:11:22,455 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:22,477 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 10 transitions, 32 flow [2021-04-29 08:11:22,481 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 10 transitions, 32 flow [2021-04-29 08:11:22,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 10 transitions, 32 flow [2021-04-29 08:11:22,489 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-04-29 08:11:22,489 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:22,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 10 events. 0/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 08:11:22,491 INFO L146 LiptonReduction]: Number of co-enabled transitions 16 [2021-04-29 08:11:22,588 INFO L158 LiptonReduction]: Checked pairs total: 9 [2021-04-29 08:11:22,588 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-29 08:11:22,591 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 138 [2021-04-29 08:11:22,608 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-04-29 08:11:22,609 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:22,609 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:22,610 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:22,610 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2003972451, now seen corresponding path program 1 times [2021-04-29 08:11:22,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:22,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643860087] [2021-04-29 08:11:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:22,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:22,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:22,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:22,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:22,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:22,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 08:11:22,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643860087] [2021-04-29 08:11:22,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:22,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 08:11:22,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161744104] [2021-04-29 08:11:22,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 08:11:22,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:22,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 08:11:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 08:11:22,808 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 17 [2021-04-29 08:11:22,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 10 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:22,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 17 [2021-04-29 08:11:22,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:22,837 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-04-29 08:11:22,837 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:22,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 14 events. 0/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 24 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-04-29 08:11:22,839 INFO L132 encePairwiseOnDemand]: 13/17 looper letters, 1 selfloop transitions, 1 changer transitions 3/10 dead transitions. [2021-04-29 08:11:22,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 40 flow [2021-04-29 08:11:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 08:11:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 08:11:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2021-04-29 08:11:22,856 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2021-04-29 08:11:22,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 42 transitions. [2021-04-29 08:11:22,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 42 transitions. [2021-04-29 08:11:22,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:22,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 42 transitions. [2021-04-29 08:11:22,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,885 INFO L185 Difference]: Start difference. First operand has 17 places, 10 transitions, 32 flow. Second operand 3 states and 42 transitions. [2021-04-29 08:11:22,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 40 flow [2021-04-29 08:11:22,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 32 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-29 08:11:22,891 INFO L241 Difference]: Finished difference. Result has 16 places, 7 transitions, 23 flow [2021-04-29 08:11:22,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=23, PETRI_PLACES=16, PETRI_TRANSITIONS=7} [2021-04-29 08:11:22,895 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2021-04-29 08:11:22,895 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:22,895 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 7 transitions, 23 flow [2021-04-29 08:11:22,896 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 7 transitions, 23 flow [2021-04-29 08:11:22,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 7 transitions, 23 flow [2021-04-29 08:11:22,900 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-04-29 08:11:22,901 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:22,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 8 events. 0/8 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 5 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 08:11:22,901 INFO L146 LiptonReduction]: Number of co-enabled transitions 4 [2021-04-29 08:11:22,903 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 08:11:22,903 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:22,903 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-04-29 08:11:22,905 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 7 transitions, 23 flow [2021-04-29 08:11:22,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,906 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:22,906 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:22,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 08:11:22,906 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:22,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:22,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2115688701, now seen corresponding path program 2 times [2021-04-29 08:11:22,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:22,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441684787] [2021-04-29 08:11:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:22,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:22,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:22,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:22,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 08:11:22,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441684787] [2021-04-29 08:11:22,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:22,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 08:11:22,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920613580] [2021-04-29 08:11:22,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 08:11:22,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:22,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 08:11:22,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 08:11:22,933 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 17 [2021-04-29 08:11:22,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 7 transitions, 23 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:22,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 17 [2021-04-29 08:11:22,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:22,943 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-04-29 08:11:22,943 INFO L130 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2021-04-29 08:11:22,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 7 events. 0/7 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 4 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 08:11:22,944 INFO L132 encePairwiseOnDemand]: 15/17 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2021-04-29 08:11:22,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 6 transitions, 25 flow [2021-04-29 08:11:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 08:11:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 08:11:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2021-04-29 08:11:22,951 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2021-04-29 08:11:22,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 33 transitions. [2021-04-29 08:11:22,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 33 transitions. [2021-04-29 08:11:22,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:22,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 33 transitions. [2021-04-29 08:11:22,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,954 INFO L185 Difference]: Start difference. First operand has 13 places, 7 transitions, 23 flow. Second operand 3 states and 33 transitions. [2021-04-29 08:11:22,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 6 transitions, 25 flow [2021-04-29 08:11:22,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 6 transitions, 24 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 08:11:22,956 INFO L241 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2021-04-29 08:11:22,957 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=11, 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=3, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2021-04-29 08:11:22,957 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, -4 predicate places. [2021-04-29 08:11:22,957 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:22,958 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 0 transitions, 0 flow [2021-04-29 08:11:22,958 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 0 transitions, 0 flow [2021-04-29 08:11:22,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 08:11:22,959 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 08:11:22,959 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 08:11:22,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 08:11:22,959 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 08:11:22,959 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 08:11:22,960 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:22,960 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-04-29 08:11:22,964 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 08:11:22,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:22,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 08:11:22,970 INFO L202 PluginConnector]: Adding new model easy8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 08:11:22 BasicIcfg [2021-04-29 08:11:22,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 08:11:22,972 INFO L168 Benchmark]: Toolchain (without parser) took 1203.16 ms. Allocated memory is still 308.3 MB. Free memory was 276.0 MB in the beginning and 283.4 MB in the end (delta: -7.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 08:11:22,973 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 308.3 MB. Free memory is still 277.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 08:11:22,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.26 ms. Allocated memory is still 308.3 MB. Free memory was 290.4 MB in the beginning and 289.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 08:11:22,982 INFO L168 Benchmark]: Boogie Preprocessor took 17.81 ms. Allocated memory is still 308.3 MB. Free memory was 289.0 MB in the beginning and 288.1 MB in the end (delta: 914.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 08:11:22,984 INFO L168 Benchmark]: RCFGBuilder took 310.67 ms. Allocated memory is still 308.3 MB. Free memory was 288.1 MB in the beginning and 285.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-04-29 08:11:22,985 INFO L168 Benchmark]: TraceAbstraction took 773.61 ms. Allocated memory is still 308.3 MB. Free memory was 285.5 MB in the beginning and 283.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.0 GB. [2021-04-29 08:11:22,987 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 0.29 ms. Allocated memory is still 308.3 MB. Free memory is still 277.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.26 ms. Allocated memory is still 308.3 MB. Free memory was 290.4 MB in the beginning and 289.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.81 ms. Allocated memory is still 308.3 MB. Free memory was 289.0 MB in the beginning and 288.1 MB in the end (delta: 914.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 310.67 ms. Allocated memory is still 308.3 MB. Free memory was 288.1 MB in the beginning and 285.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 773.61 ms. Allocated memory is still 308.3 MB. Free memory was 285.5 MB in the beginning and 283.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 106.7ms, 17 PlacesBefore, 17 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 1, Negative conditional cache size: 1, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.0ms, 16 PlacesBefore, 13 PlacesAfterwards, 7 TransitionsBefore, 7 TransitionsAfterwards, 4 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): 8, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 1, Negative conditional cache size: 1, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4ms, 13 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): 8, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 1, Negative conditional cache size: 1, Negative unconditional cache size: 0 - PositiveResult [Line: 39]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 624.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 119.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 245.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 6, 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: 7.0ms SsaConstructionTime, 18.2ms SatisfiabilityAnalysisTime, 66.0ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...