/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 00:18:01,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 00:18:01,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 00:18:01,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 00:18:01,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 00:18:01,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 00:18:01,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 00:18:01,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 00:18:01,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 00:18:01,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 00:18:01,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 00:18:01,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 00:18:01,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 00:18:01,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 00:18:01,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 00:18:01,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 00:18:01,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 00:18:01,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 00:18:01,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 00:18:01,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 00:18:01,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 00:18:01,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 00:18:01,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 00:18:01,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 00:18:01,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 00:18:01,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 00:18:01,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 00:18:01,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 00:18:01,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-25 00:18:01,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 00:18:01,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 00:18:01,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 00:18:01,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 00:18:01,554 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 00:18:01,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 00:18:01,555 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 00:18:01,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 00:18:01,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 00:18:01,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 00:18:01,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 00:18:01,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 00:18:01,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 00:18:01,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 00:18:01,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 00:18:01,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 00:18:01,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 00:18:01,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 00:18:01,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 00:18:01,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 00:18:01,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 00:18:01,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 00:18:01,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 00:18:01,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 00:18:01,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 00:18:01,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 00:18:01,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 00:18:01,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 00:18:01,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 00:18:01,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 00:18:01,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 00:18:01,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 00:18:01,860 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 00:18:01,861 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 00:18:01,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl [2021-03-25 00:18:01,862 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl' [2021-03-25 00:18:01,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 00:18:01,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 00:18:01,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:01,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 00:18:01,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 00:18:01,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 00:18:01,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 00:18:01,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 00:18:01,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 00:18:01,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/1) ... [2021-03-25 00:18:01,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 00:18:01,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 00:18:01,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 00:18:01,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 00:18:01,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (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 00:18:01,977 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 00:18:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 00:18:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 00:18:01,978 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 00:18:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 00:18:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 00:18:01,978 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 00:18:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 00:18:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 00:18:01,979 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 00:18:02,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 00:18:02,136 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 00:18:02,138 INFO L202 PluginConnector]: Adding new model ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:02 BoogieIcfgContainer [2021-03-25 00:18:02,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 00:18:02,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 00:18:02,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 00:18:02,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 00:18:02,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 12:18:01" (1/2) ... [2021-03-25 00:18:02,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632a302a and model type ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:18:02, skipping insertion in model container [2021-03-25 00:18:02,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:18:02" (2/2) ... [2021-03-25 00:18:02,143 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-2.wvr.bpl [2021-03-25 00:18:02,148 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 00:18:02,150 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 00:18:02,151 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 00:18:02,187 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 00:18:02,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 00:18:02,228 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 00:18:02,228 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 00:18:02,228 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 00:18:02,228 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 00:18:02,228 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 00:18:02,228 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 00:18:02,228 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 00:18:02,229 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 00:18:02,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 22 transitions, 60 flow [2021-03-25 00:18:02,262 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 00:18:02,262 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:18:02,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 0/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 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 00:18:02,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 22 transitions, 60 flow [2021-03-25 00:18:02,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 18 transitions, 48 flow [2021-03-25 00:18:02,279 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 00:18:02,290 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 18 transitions, 48 flow [2021-03-25 00:18:02,292 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 18 transitions, 48 flow [2021-03-25 00:18:02,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 18 transitions, 48 flow [2021-03-25 00:18:02,301 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 00:18:02,301 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:18:02,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 0/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 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 00:18:02,302 INFO L142 LiptonReduction]: Number of co-enabled transitions 82 [2021-03-25 00:18:02,573 INFO L154 LiptonReduction]: Checked pairs total: 114 [2021-03-25 00:18:02,573 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 00:18:02,575 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 297 [2021-03-25 00:18:02,584 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 00:18:02,584 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 00:18:02,584 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:02,585 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:02,585 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:02,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:02,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1884581264, now seen corresponding path program 1 times [2021-03-25 00:18:02,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:02,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193629894] [2021-03-25 00:18:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:02,707 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 00:18:02,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 00:18:02,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:02,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 00:18:02,729 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 00:18:02,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193629894] [2021-03-25 00:18:02,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:02,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 00:18:02,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170788739] [2021-03-25 00:18:02,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:02,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:02,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:02,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:02,749 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-03-25 00:18:02,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 36 flow. Second operand has 5 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 00:18:02,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:02,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-03-25 00:18:02,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:02,780 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-25 00:18:02,780 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 00:18:02,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 29 events. 5/29 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 2 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 43. Up to 12 conditions per place. [2021-03-25 00:18:02,782 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 5 selfloop transitions, 5 changer transitions 2/17 dead transitions. [2021-03-25 00:18:02,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2021-03-25 00:18:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2021-03-25 00:18:02,791 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2021-03-25 00:18:02,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2021-03-25 00:18:02,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2021-03-25 00:18:02,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:02,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2021-03-25 00:18:02,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 00:18:02,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 00:18:02,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 00:18:02,801 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 36 flow. Second operand 5 states and 88 transitions. [2021-03-25 00:18:02,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2021-03-25 00:18:02,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 62 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:02,805 INFO L241 Difference]: Finished difference. Result has 22 places, 14 transitions, 58 flow [2021-03-25 00:18:02,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2021-03-25 00:18:02,808 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2021-03-25 00:18:02,808 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 58 flow [2021-03-25 00:18:02,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 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 00:18:02,808 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:02,808 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:02,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 00:18:02,809 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:02,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1437297288, now seen corresponding path program 2 times [2021-03-25 00:18:02,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:02,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844453421] [2021-03-25 00:18:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:02,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:02,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:02,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:02,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:02,843 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 00:18:02,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844453421] [2021-03-25 00:18:02,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:02,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:02,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185220792] [2021-03-25 00:18:02,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:02,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:02,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:02,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:02,846 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-03-25 00:18:02,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 58 flow. Second operand has 5 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 00:18:02,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:02,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-03-25 00:18:02,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:02,880 INFO L129 PetriNetUnfolder]: 3/21 cut-off events. [2021-03-25 00:18:02,880 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-25 00:18:02,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 21 events. 3/21 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 2 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 49. Up to 10 conditions per place. [2021-03-25 00:18:02,881 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 4 selfloop transitions, 3 changer transitions 3/15 dead transitions. [2021-03-25 00:18:02,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 15 transitions, 84 flow [2021-03-25 00:18:02,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2021-03-25 00:18:02,883 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2021-03-25 00:18:02,883 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 86 transitions. [2021-03-25 00:18:02,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 86 transitions. [2021-03-25 00:18:02,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:02,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 86 transitions. [2021-03-25 00:18:02,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 00:18:02,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 00:18:02,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 00:18:02,886 INFO L185 Difference]: Start difference. First operand has 22 places, 14 transitions, 58 flow. Second operand 5 states and 86 transitions. [2021-03-25 00:18:02,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 15 transitions, 84 flow [2021-03-25 00:18:02,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 68 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-25 00:18:02,887 INFO L241 Difference]: Finished difference. Result has 22 places, 12 transitions, 44 flow [2021-03-25 00:18:02,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=44, PETRI_PLACES=22, PETRI_TRANSITIONS=12} [2021-03-25 00:18:02,888 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2021-03-25 00:18:02,888 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 12 transitions, 44 flow [2021-03-25 00:18:02,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 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 00:18:02,889 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 00:18:02,889 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 00:18:02,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 00:18:02,889 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 00:18:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 00:18:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash 86093898, now seen corresponding path program 3 times [2021-03-25 00:18:02,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 00:18:02,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737031458] [2021-03-25 00:18:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 00:18:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 00:18:02,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 00:18:02,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:02,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 00:18:02,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 00:18:02,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 00:18:02,920 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 00:18:02,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737031458] [2021-03-25 00:18:02,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 00:18:02,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 00:18:02,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715573625] [2021-03-25 00:18:02,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 00:18:02,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 00:18:02,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 00:18:02,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 00:18:02,922 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-03-25 00:18:02,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 12 transitions, 44 flow. Second operand has 5 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 00:18:02,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 00:18:02,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-03-25 00:18:02,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 00:18:02,955 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-03-25 00:18:02,955 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 00:18:02,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 8 events. 1/8 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/10 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2021-03-25 00:18:02,956 INFO L132 encePairwiseOnDemand]: 24/28 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-25 00:18:02,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 7 transitions, 39 flow [2021-03-25 00:18:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 00:18:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 00:18:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2021-03-25 00:18:02,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2021-03-25 00:18:02,957 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 81 transitions. [2021-03-25 00:18:02,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 81 transitions. [2021-03-25 00:18:02,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 00:18:02,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 81 transitions. [2021-03-25 00:18:02,958 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 00:18:02,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 00:18:02,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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 00:18:02,959 INFO L185 Difference]: Start difference. First operand has 22 places, 12 transitions, 44 flow. Second operand 5 states and 81 transitions. [2021-03-25 00:18:02,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 7 transitions, 39 flow [2021-03-25 00:18:02,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 30 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-25 00:18:02,960 INFO L241 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-03-25 00:18:02,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=18, 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=5, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2021-03-25 00:18:02,960 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -4 predicate places. [2021-03-25 00:18:02,960 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2021-03-25 00:18:02,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 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 00:18:02,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 00:18:02,964 INFO L202 PluginConnector]: Adding new model ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:18:02 BasicIcfg [2021-03-25 00:18:02,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 00:18:02,965 INFO L168 Benchmark]: Toolchain (without parser) took 1077.05 ms. Allocated memory is still 337.6 MB. Free memory was 318.1 MB in the beginning and 237.4 MB in the end (delta: 80.7 MB). Peak memory consumption was 82.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:02,965 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 337.6 MB. Free memory was 319.2 MB in the beginning and 319.1 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:18:02,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.92 ms. Allocated memory is still 337.6 MB. Free memory was 318.0 MB in the beginning and 316.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:02,968 INFO L168 Benchmark]: Boogie Preprocessor took 11.22 ms. Allocated memory is still 337.6 MB. Free memory was 316.6 MB in the beginning and 315.7 MB in the end (delta: 845.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 00:18:02,972 INFO L168 Benchmark]: RCFGBuilder took 216.80 ms. Allocated memory is still 337.6 MB. Free memory was 315.7 MB in the beginning and 304.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:02,973 INFO L168 Benchmark]: TraceAbstraction took 824.93 ms. Allocated memory is still 337.6 MB. Free memory was 304.1 MB in the beginning and 237.4 MB in the end (delta: 66.8 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.0 GB. [2021-03-25 00:18:02,977 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 0.11 ms. Allocated memory is still 337.6 MB. Free memory was 319.2 MB in the beginning and 319.1 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.92 ms. Allocated memory is still 337.6 MB. Free memory was 318.0 MB in the beginning and 316.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.22 ms. Allocated memory is still 337.6 MB. Free memory was 316.6 MB in the beginning and 315.7 MB in the end (delta: 845.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 216.80 ms. Allocated memory is still 337.6 MB. Free memory was 315.7 MB in the beginning and 304.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 824.93 ms. Allocated memory is still 337.6 MB. Free memory was 304.1 MB in the beginning and 237.4 MB in the end (delta: 66.8 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 281.2ms, 25 PlacesBefore, 19 PlacesAfterwards, 18 TransitionsBefore, 12 TransitionsAfterwards, 82 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 114 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 71, positive: 55, positive conditional: 0, positive unconditional: 55, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 54, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 54, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 54, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 71, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 54, unknown conditional: 0, unknown unconditional: 54] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 737.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 144.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 351.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 7 SDslu, 2 SDs, 0 SdLazy, 55 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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: 5.6ms SsaConstructionTime, 30.7ms SatisfiabilityAnalysisTime, 109.7ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 109 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...