/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/parallel/ticket-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 05:36:09,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 05:36:09,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 05:36:09,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 05:36:09,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 05:36:09,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 05:36:09,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 05:36:09,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 05:36:09,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 05:36:09,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 05:36:09,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 05:36:09,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 05:36:09,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 05:36:09,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 05:36:09,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 05:36:09,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 05:36:09,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 05:36:09,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 05:36:09,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 05:36:09,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 05:36:09,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 05:36:09,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 05:36:09,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 05:36:09,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 05:36:09,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 05:36:09,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 05:36:09,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 05:36:09,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 05:36:09,327 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 [2021-03-26 05:36:09,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 05:36:09,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 05:36:09,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 05:36:09,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 05:36:09,341 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 05:36:09,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 05:36:09,342 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 05:36:09,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 05:36:09,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 05:36:09,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 05:36:09,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 05:36:09,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 05:36:09,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 05:36:09,343 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 05:36:09,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 05:36:09,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 05:36:09,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 05:36:09,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 05:36:09,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 05:36:09,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 05:36:09,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 05:36:09,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 05:36:09,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 05:36:09,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 05:36:09,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 05:36:09,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 05:36:09,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 05:36:09,344 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 05:36:09,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 05:36:09,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 05:36:09,345 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 05:36:09,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 05:36:09,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 05:36:09,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 05:36:09,580 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 05:36:09,581 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 05:36:09,584 INFO L432 ainManager$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 [2021-03-26 05:36:09,584 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl' [2021-03-26 05:36:09,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 05:36:09,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 05:36:09,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 05:36:09,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 05:36:09,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 05:36:09,612 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 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,616 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 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 05:36:09,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 05:36:09,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 05:36:09,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 05:36:09,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (1/1) ... [2021-03-26 05:36:09,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 05:36:09,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 05:36:09,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 05:36:09,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 05:36:09,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (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 [2021-03-26 05:36:09,681 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-26 05:36:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 05:36:09,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 05:36:09,681 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-26 05:36:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-26 05:36:09,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-26 05:36:09,682 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 05:36:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 05:36:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 05:36:09,682 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 05:36:09,833 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 05:36:09,833 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 05:36:09,834 INFO L202 PluginConnector]: Adding new model ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 05:36:09 BoogieIcfgContainer [2021-03-26 05:36:09,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 05:36:09,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 05:36:09,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 05:36:09,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 05:36:09,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:09" (1/2) ... [2021-03-26 05:36:09,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ca55bc and model type ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 05:36:09, skipping insertion in model container [2021-03-26 05:36:09,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 05:36:09" (2/2) ... [2021-03-26 05:36:09,838 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-2.wvr.bpl [2021-03-26 05:36:09,841 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 05:36:09,845 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 05:36:09,846 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 05:36:09,895 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-26 05:36:09,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 05:36:09,945 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 05:36:09,946 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 05:36:09,946 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 05:36:09,946 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 05:36:09,946 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 05:36:09,946 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 05:36:09,946 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 05:36:09,946 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 05:36:09,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 22 transitions, 60 flow [2021-03-26 05:36:09,971 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-26 05:36:09,971 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 05:36:09,973 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. [2021-03-26 05:36:09,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 22 transitions, 60 flow [2021-03-26 05:36:09,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 18 transitions, 48 flow [2021-03-26 05:36:09,977 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:09,990 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 18 transitions, 48 flow [2021-03-26 05:36:09,993 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 18 transitions, 48 flow [2021-03-26 05:36:09,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 18 transitions, 48 flow [2021-03-26 05:36:10,011 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-26 05:36:10,011 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 05:36:10,011 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. [2021-03-26 05:36:10,013 INFO L142 LiptonReduction]: Number of co-enabled transitions 82 [2021-03-26 05:36:10,279 INFO L154 LiptonReduction]: Checked pairs total: 114 [2021-03-26 05:36:10,279 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 05:36:10,282 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 306 [2021-03-26 05:36:10,297 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-26 05:36:10,297 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 05:36:10,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:10,298 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:10,298 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:10,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:10,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1884581264, now seen corresponding path program 1 times [2021-03-26 05:36:10,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:10,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048271530] [2021-03-26 05:36:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:10,421 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 05:36:10,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 05:36:10,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:10,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:10,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:10,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-26 05:36:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 05:36:10,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048271530] [2021-03-26 05:36:10,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:10,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 05:36:10,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098150235] [2021-03-26 05:36:10,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 05:36:10,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:10,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 05:36:10,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 05:36:10,457 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 28 [2021-03-26 05:36:10,458 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) [2021-03-26 05:36:10,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:10,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 28 [2021-03-26 05:36:10,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:10,485 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-26 05:36:10,485 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 05:36:10,486 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. [2021-03-26 05:36:10,487 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 5 selfloop transitions, 5 changer transitions 2/17 dead transitions. [2021-03-26 05:36:10,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2021-03-26 05:36:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 05:36:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 05:36:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2021-03-26 05:36:10,494 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2021-03-26 05:36:10,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2021-03-26 05:36:10,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2021-03-26 05:36:10,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:10,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2021-03-26 05:36:10,497 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) [2021-03-26 05:36:10,500 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) [2021-03-26 05:36:10,500 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) [2021-03-26 05:36:10,501 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 36 flow. Second operand 5 states and 88 transitions. [2021-03-26 05:36:10,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2021-03-26 05:36:10,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 62 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 05:36:10,504 INFO L241 Difference]: Finished difference. Result has 22 places, 14 transitions, 58 flow [2021-03-26 05:36:10,505 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} [2021-03-26 05:36:10,505 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2021-03-26 05:36:10,505 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:10,505 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 14 transitions, 58 flow [2021-03-26 05:36:10,506 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 14 transitions, 58 flow [2021-03-26 05:36:10,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 14 transitions, 58 flow [2021-03-26 05:36:10,508 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2021-03-26 05:36:10,508 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 05:36:10,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 15 events. 1/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 20. Up to 5 conditions per place. [2021-03-26 05:36:10,509 INFO L142 LiptonReduction]: Number of co-enabled transitions 10 [2021-03-26 05:36:10,726 INFO L154 LiptonReduction]: Checked pairs total: 11 [2021-03-26 05:36:10,726 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 05:36:10,726 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 221 [2021-03-26 05:36:10,727 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 59 flow [2021-03-26 05:36:10,727 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) [2021-03-26 05:36:10,727 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:10,727 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:10,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 05:36:10,731 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:10,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1437297288, now seen corresponding path program 2 times [2021-03-26 05:36:10,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:10,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775622989] [2021-03-26 05:36:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:10,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:10,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:10,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:10,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:10,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:10,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:10,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:10,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 05:36:10,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775622989] [2021-03-26 05:36:10,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:10,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 05:36:10,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354812365] [2021-03-26 05:36:10,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 05:36:10,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:10,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 05:36:10,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 05:36:10,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2021-03-26 05:36:10,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 59 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) [2021-03-26 05:36:10,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:10,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2021-03-26 05:36:10,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:10,765 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-26 05:36:10,765 INFO L130 PetriNetUnfolder]: For 14/18 co-relation queries the response was YES. [2021-03-26 05:36:10,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 5 events. 0/5 cut-off events. For 14/18 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 4/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 05:36:10,765 INFO L132 encePairwiseOnDemand]: 28/33 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-03-26 05:36:10,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 5 transitions, 31 flow [2021-03-26 05:36:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 05:36:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 05:36:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2021-03-26 05:36:10,766 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2021-03-26 05:36:10,766 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 65 transitions. [2021-03-26 05:36:10,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 65 transitions. [2021-03-26 05:36:10,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:10,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 65 transitions. [2021-03-26 05:36:10,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2021-03-26 05:36:10,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2021-03-26 05:36:10,768 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 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) [2021-03-26 05:36:10,768 INFO L185 Difference]: Start difference. First operand has 20 places, 12 transitions, 59 flow. Second operand 4 states and 65 transitions. [2021-03-26 05:36:10,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 5 transitions, 31 flow [2021-03-26 05:36:10,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 5 transitions, 23 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-26 05:36:10,768 INFO L241 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2021-03-26 05:36:10,768 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2021-03-26 05:36:10,769 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -5 predicate places. [2021-03-26 05:36:10,769 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:10,769 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 0 transitions, 0 flow [2021-03-26 05:36:10,769 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 0 transitions, 0 flow [2021-03-26 05:36:10,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 05:36:10,769 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 05:36:10,769 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 05:36:10,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 05:36:10,770 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 05:36:10,770 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:36:10,770 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 05:36:10,770 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 05:36:10,770 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 05:36:10,771 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) [2021-03-26 05:36:10,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 05:36:10,773 INFO L202 PluginConnector]: Adding new model ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 05:36:10 BasicIcfg [2021-03-26 05:36:10,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 05:36:10,774 INFO L168 Benchmark]: Toolchain (without parser) took 1171.57 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 236.7 MB in the beginning and 326.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. [2021-03-26 05:36:10,774 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.35 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 05:36:10,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.89 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 05:36:10,775 INFO L168 Benchmark]: Boogie Preprocessor took 7.99 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 898.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 05:36:10,775 INFO L168 Benchmark]: RCFGBuilder took 203.39 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 239.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.0 GB. [2021-03-26 05:36:10,775 INFO L168 Benchmark]: TraceAbstraction took 937.92 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 238.4 MB in the beginning and 326.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-03-26 05:36:10,777 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 0.35 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.89 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 7.99 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 898.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 203.39 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 239.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 937.92 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 238.4 MB in the beginning and 326.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 285.6ms, 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: 55, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 57, positive: 46, positive conditional: 0, positive unconditional: 46, 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: 57, positive: 46, positive conditional: 0, positive unconditional: 46, 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: 57, positive: 42, positive conditional: 0, positive unconditional: 42, 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: 81, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 71, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 57, unknown conditional: 57, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 5, Positive conditional cache size: 5, Positive unconditional cache size: 0, Negative cache size: 4, Negative conditional cache size: 4, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 220.3ms, 22 PlacesBefore, 20 PlacesAfterwards, 14 TransitionsBefore, 12 TransitionsAfterwards, 10 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 11 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 11, 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: 7, positive: 7, positive conditional: 5, positive unconditional: 2, 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: 7, positive: 7, positive conditional: 5, positive unconditional: 2, 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: 7, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 11, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 14 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 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: 5.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 840.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 63.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 345.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=1, InterpolantAutomatonStates: 9, 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: 2.9ms SsaConstructionTime, 17.8ms SatisfiabilityAnalysisTime, 90.4ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...