/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 19:02:05,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 19:02:05,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 19:02:05,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 19:02:05,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 19:02:05,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 19:02:05,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 19:02:05,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 19:02:05,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 19:02:05,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 19:02:05,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 19:02:05,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 19:02:05,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 19:02:05,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 19:02:05,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 19:02:05,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 19:02:05,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 19:02:05,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 19:02:05,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 19:02:05,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 19:02:05,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 19:02:05,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 19:02:05,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 19:02:05,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 19:02:05,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 19:02:05,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 19:02:05,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 19:02:05,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 19:02:05,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2021-03-25 19:02:05,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 19:02:05,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 19:02:05,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 19:02:05,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 19:02:05,412 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 19:02:05,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 19:02:05,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 19:02:05,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 19:02:05,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 19:02:05,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 19:02:05,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 19:02:05,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 19:02:05,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 19:02:05,414 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 19:02:05,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 19:02:05,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 19:02:05,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 19:02:05,686 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 19:02:05,687 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 19:02:05,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl [2021-03-25 19:02:05,688 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl' [2021-03-25 19:02:05,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 19:02:05,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 19:02:05,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 19:02:05,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 19:02:05,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 19:02:05,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 19:02:05,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 19:02:05,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 19:02:05,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 19:02:05,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... [2021-03-25 19:02:05,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 19:02:05,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 19:02:05,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 19:02:05,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 19:02:05,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 19:02:05,792 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 19:02:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 19:02:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 19:02:05,793 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 19:02:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 19:02:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 19:02:05,793 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 19:02:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 19:02:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 19:02:05,794 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 19:02:05,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 19:02:05,917 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 19:02:05,919 INFO L202 PluginConnector]: Adding new model match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:02:05 BoogieIcfgContainer [2021-03-25 19:02:05,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 19:02:05,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 19:02:05,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 19:02:05,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 19:02:05,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:02:05" (1/2) ... [2021-03-25 19:02:05,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43303fa5 and model type match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:02:05, skipping insertion in model container [2021-03-25 19:02:05,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:02:05" (2/2) ... [2021-03-25 19:02:05,928 INFO L111 eAbstractionObserver]: Analyzing ICFG match-symm.wvr.bpl [2021-03-25 19:02:05,934 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 19:02:05,936 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 19:02:05,937 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 19:02:05,984 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 19:02:05,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 19:02:06,024 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 19:02:06,024 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 19:02:06,024 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 19:02:06,024 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 19:02:06,024 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 19:02:06,024 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 19:02:06,024 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 19:02:06,024 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 19:02:06,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 44 flow [2021-03-25 19:02:06,042 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 19:02:06,043 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 19:02:06,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 0/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:02:06,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 14 transitions, 44 flow [2021-03-25 19:02:06,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 10 transitions, 32 flow [2021-03-25 19:02:06,047 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:02:06,056 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 10 transitions, 32 flow [2021-03-25 19:02:06,058 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 10 transitions, 32 flow [2021-03-25 19:02:06,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 10 transitions, 32 flow [2021-03-25 19:02:06,062 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 19:02:06,062 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 19:02:06,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 10 events. 0/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:02:06,063 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-25 19:02:06,110 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 19:02:06,110 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 19:02:06,111 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-03-25 19:02:06,117 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 19:02:06,118 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 19:02:06,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:02:06,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:02:06,118 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:02:06,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:02:06,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1664346307, now seen corresponding path program 1 times [2021-03-25 19:02:06,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:02:06,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012171714] [2021-03-25 19:02:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:02:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:02:06,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:02:06,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:02:06,368 INFO L142 QuantifierPusher]: treesize reduction 1354, result has 11.6 percent of original size [2021-03-25 19:02:06,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-03-25 19:02:06,539 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-03-25 19:02:06,549 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-03-25 19:02:06,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-25 19:02:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:02:06,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012171714] [2021-03-25 19:02:06,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:02:06,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:02:06,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823215947] [2021-03-25 19:02:06,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:02:06,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:02:06,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:02:06,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:02:06,585 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 17 [2021-03-25 19:02:06,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 26 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:02:06,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 17 [2021-03-25 19:02:06,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:02:06,682 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 19:02:06,682 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 19:02:06,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 11 events. 0/11 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 19:02:06,683 INFO L132 encePairwiseOnDemand]: 14/17 looper letters, 2 selfloop transitions, 1 changer transitions 1/8 dead transitions. [2021-03-25 19:02:06,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 8 transitions, 36 flow [2021-03-25 19:02:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:02:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:02:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2021-03-25 19:02:06,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2021-03-25 19:02:06,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 45 transitions. [2021-03-25 19:02:06,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 45 transitions. [2021-03-25 19:02:06,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:02:06,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 45 transitions. [2021-03-25 19:02:06,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,699 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,701 INFO L185 Difference]: Start difference. First operand has 14 places, 7 transitions, 26 flow. Second operand 4 states and 45 transitions. [2021-03-25 19:02:06,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 8 transitions, 36 flow [2021-03-25 19:02:06,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 8 transitions, 28 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 19:02:06,706 INFO L241 Difference]: Finished difference. Result has 15 places, 7 transitions, 25 flow [2021-03-25 19:02:06,707 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=25, PETRI_PLACES=15, PETRI_TRANSITIONS=7} [2021-03-25 19:02:06,708 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 1 predicate places. [2021-03-25 19:02:06,708 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:02:06,708 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 7 transitions, 25 flow [2021-03-25 19:02:06,708 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 7 transitions, 25 flow [2021-03-25 19:02:06,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 7 transitions, 25 flow [2021-03-25 19:02:06,712 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-25 19:02:06,712 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 19:02:06,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 8 events. 0/8 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 5 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:02:06,713 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 19:02:06,714 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:02:06,714 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:02:06,714 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 19:02:06,716 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 25 flow [2021-03-25 19:02:06,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,716 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:02:06,716 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:02:06,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 19:02:06,716 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:02:06,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:02:06,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1662558847, now seen corresponding path program 2 times [2021-03-25 19:02:06,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:02:06,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597536362] [2021-03-25 19:02:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:02:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:02:06,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:02:06,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:02:06,781 INFO L142 QuantifierPusher]: treesize reduction 10040, result has 2.0 percent of original size [2021-03-25 19:02:06,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-03-25 19:02:06,901 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-03-25 19:02:06,903 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-03-25 19:02:06,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-25 19:02:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:02:06,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597536362] [2021-03-25 19:02:06,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:02:06,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:02:06,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602133294] [2021-03-25 19:02:06,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:02:06,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:02:06,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:02:06,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:02:06,927 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 17 [2021-03-25 19:02:06,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 25 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:02:06,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 17 [2021-03-25 19:02:06,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:02:06,982 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 19:02:06,983 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-03-25 19:02:06,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 0/7 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 4 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:02:06,985 INFO L132 encePairwiseOnDemand]: 14/17 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-25 19:02:06,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 32 flow [2021-03-25 19:02:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:02:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:02:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2021-03-25 19:02:06,990 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2021-03-25 19:02:06,990 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 44 transitions. [2021-03-25 19:02:06,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 44 transitions. [2021-03-25 19:02:06,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:02:06,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 44 transitions. [2021-03-25 19:02:06,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,993 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,994 INFO L185 Difference]: Start difference. First operand has 14 places, 7 transitions, 25 flow. Second operand 4 states and 44 transitions. [2021-03-25 19:02:06,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 32 flow [2021-03-25 19:02:06,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 19:02:06,995 INFO L241 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-03-25 19:02:06,995 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2021-03-25 19:02:06,996 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 1 predicate places. [2021-03-25 19:02:06,996 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:02:06,996 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 0 transitions, 0 flow [2021-03-25 19:02:06,996 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 0 transitions, 0 flow [2021-03-25 19:02:06,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 19:02:06,996 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 19:02:06,996 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 19:02:06,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 19:02:06,997 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 19:02:06,997 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:02:06,997 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:02:06,997 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 19:02:06,998 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 19:02:06,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:02:06,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 19:02:07,001 INFO L202 PluginConnector]: Adding new model match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:02:07 BasicIcfg [2021-03-25 19:02:07,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 19:02:07,003 INFO L168 Benchmark]: Toolchain (without parser) took 1291.78 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 236.9 MB in the beginning and 299.2 MB in the end (delta: -62.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.0 GB. [2021-03-25 19:02:07,003 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:02:07,006 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.26 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 19:02:07,007 INFO L168 Benchmark]: Boogie Preprocessor took 9.07 ms. Allocated memory is still 255.9 MB. Free memory was 235.3 MB in the beginning and 234.4 MB in the end (delta: 943.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:02:07,007 INFO L168 Benchmark]: RCFGBuilder took 172.55 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 241.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. [2021-03-25 19:02:07,008 INFO L168 Benchmark]: TraceAbstraction took 1078.51 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 241.8 MB in the beginning and 299.2 MB in the end (delta: -57.3 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.0 GB. [2021-03-25 19:02:07,011 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 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.26 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.07 ms. Allocated memory is still 255.9 MB. Free memory was 235.3 MB in the beginning and 234.4 MB in the end (delta: 943.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 172.55 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 241.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1078.51 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 241.8 MB in the beginning and 299.2 MB in the end (delta: -57.3 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.3ms, 17 PlacesBefore, 14 PlacesAfterwards, 10 TransitionsBefore, 7 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , 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: 5.5ms, 15 PlacesBefore, 14 PlacesAfterwards, 7 TransitionsBefore, 7 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 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: 0.5ms, 15 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: 38]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 977.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 197.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 90.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 416.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.5ms SsaConstructionTime, 38.8ms SatisfiabilityAnalysisTime, 559.8ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 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...