/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/test/easy7.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 22:07:25,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 22:07:25,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 22:07:25,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 22:07:25,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 22:07:25,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 22:07:25,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 22:07:25,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 22:07:25,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 22:07:25,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 22:07:25,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 22:07:25,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 22:07:25,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 22:07:25,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 22:07:25,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 22:07:25,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 22:07:25,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 22:07:25,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 22:07:25,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 22:07:25,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 22:07:25,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 22:07:25,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 22:07:25,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 22:07:25,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 22:07:25,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 22:07:25,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 22:07:25,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 22:07:25,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 22:07:25,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 22:07:25,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 22:07:25,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 22:07:25,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 22:07:25,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 22:07:25,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 22:07:25,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 22:07:25,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 22:07:25,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 22:07:25,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 22:07:25,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 22:07:25,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 22:07:25,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 22:07:25,415 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 22:07:25,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 22:07:25,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 22:07:25,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 22:07:25,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 22:07:25,436 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 22:07:25,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 22:07:25,436 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 22:07:25,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 22:07:25,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 22:07:25,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 22:07:25,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 22:07:25,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 22:07:25,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 22:07:25,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 22:07:25,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 22:07:25,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 22:07:25,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 22:07:25,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 22:07:25,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 22:07:25,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 22:07:25,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 22:07:25,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:07:25,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 22:07:25,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 22:07:25,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 22:07:25,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 22:07:25,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 22:07:25,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 22:07:25,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 22:07:25,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 22:07:25,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 22:07:25,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 22:07:25,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 22:07:25,733 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 22:07:25,734 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 22:07:25,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy7.wvr.bpl [2021-03-25 22:07:25,735 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy7.wvr.bpl' [2021-03-25 22:07:25,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 22:07:25,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 22:07:25,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 22:07:25,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 22:07:25,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 22:07:25,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 22:07:25,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 22:07:25,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 22:07:25,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 22:07:25,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/1) ... [2021-03-25 22:07:25,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 22:07:25,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 22:07:25,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 22:07:25,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 22:07:25,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (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 22:07:25,870 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 22:07:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 22:07:25,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 22:07:25,871 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 22:07:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 22:07:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 22:07:25,872 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 22:07:25,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 22:07:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 22:07:25,873 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 22:07:25,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 22:07:25,998 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 22:07:25,999 INFO L202 PluginConnector]: Adding new model easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:07:25 BoogieIcfgContainer [2021-03-25 22:07:25,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 22:07:26,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 22:07:26,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 22:07:26,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 22:07:26,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:25" (1/2) ... [2021-03-25 22:07:26,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55007b1c and model type easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:07:26, skipping insertion in model container [2021-03-25 22:07:26,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:07:25" (2/2) ... [2021-03-25 22:07:26,005 INFO L111 eAbstractionObserver]: Analyzing ICFG easy7.wvr.bpl [2021-03-25 22:07:26,009 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 22:07:26,012 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 22:07:26,013 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 22:07:26,036 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 22:07:26,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 22:07:26,065 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 22:07:26,065 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 22:07:26,065 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 22:07:26,065 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 22:07:26,065 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 22:07:26,066 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 22:07:26,066 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 22:07:26,066 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 22:07:26,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 58 flow [2021-03-25 22:07:26,090 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 22:07:26,091 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:07:26,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 0/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 22:07:26,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 21 transitions, 58 flow [2021-03-25 22:07:26,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 17 transitions, 46 flow [2021-03-25 22:07:26,096 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:26,107 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 17 transitions, 46 flow [2021-03-25 22:07:26,110 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 17 transitions, 46 flow [2021-03-25 22:07:26,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 17 transitions, 46 flow [2021-03-25 22:07:26,118 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 22:07:26,118 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:07:26,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 0/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 22:07:26,119 INFO L142 LiptonReduction]: Number of co-enabled transitions 70 [2021-03-25 22:07:26,340 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-25 22:07:26,341 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 22:07:26,343 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 247 [2021-03-25 22:07:26,364 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 22:07:26,365 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:07:26,365 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:26,365 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:26,366 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:26,370 INFO L82 PathProgramCache]: Analyzing trace with hash 61005661, now seen corresponding path program 1 times [2021-03-25 22:07:26,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:26,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593186730] [2021-03-25 22:07:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:26,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:26,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:26,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:26,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:26,542 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 22:07:26,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:26,547 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 22:07:26,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593186730] [2021-03-25 22:07:26,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:26,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:07:26,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508971051] [2021-03-25 22:07:26,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:07:26,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:26,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:07:26,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:07:26,579 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2021-03-25 22:07:26,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 8 transitions, 28 flow. Second operand has 4 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 22:07:26,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:26,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2021-03-25 22:07:26,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:26,613 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 22:07:26,613 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 22:07:26,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 12 events. 0/12 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. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 22:07:26,615 INFO L132 encePairwiseOnDemand]: 26/30 looper letters, 2 selfloop transitions, 2 changer transitions 2/10 dead transitions. [2021-03-25 22:07:26,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 44 flow [2021-03-25 22:07:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:07:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:07:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2021-03-25 22:07:26,624 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2021-03-25 22:07:26,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 47 transitions. [2021-03-25 22:07:26,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 47 transitions. [2021-03-25 22:07:26,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:26,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 47 transitions. [2021-03-25 22:07:26,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 22:07:26,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 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 22:07:26,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 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 22:07:26,636 INFO L185 Difference]: Start difference. First operand has 15 places, 8 transitions, 28 flow. Second operand 4 states and 47 transitions. [2021-03-25 22:07:26,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 44 flow [2021-03-25 22:07:26,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 36 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 22:07:26,643 INFO L241 Difference]: Finished difference. Result has 15 places, 8 transitions, 30 flow [2021-03-25 22:07:26,644 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=8} [2021-03-25 22:07:26,645 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2021-03-25 22:07:26,645 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:26,645 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 8 transitions, 30 flow [2021-03-25 22:07:26,646 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 8 transitions, 30 flow [2021-03-25 22:07:26,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 8 transitions, 30 flow [2021-03-25 22:07:26,649 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-25 22:07:26,649 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:07:26,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 22:07:26,649 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 22:07:26,650 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:26,650 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:26,650 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 22:07:26,653 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 30 flow [2021-03-25 22:07:26,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 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 22:07:26,653 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:26,653 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:26,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 22:07:26,654 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:26,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:26,655 INFO L82 PathProgramCache]: Analyzing trace with hash 337168231, now seen corresponding path program 2 times [2021-03-25 22:07:26,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:26,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313853042] [2021-03-25 22:07:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:26,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:26,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:26,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:26,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:26,727 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 22:07:26,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:26,732 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 22:07:26,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313853042] [2021-03-25 22:07:26,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:26,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:07:26,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877179423] [2021-03-25 22:07:26,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:07:26,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:26,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:07:26,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:07:26,735 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2021-03-25 22:07:26,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 8 transitions, 30 flow. Second operand has 4 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 22:07:26,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:26,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2021-03-25 22:07:26,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:26,748 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 22:07:26,749 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:07:26,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 0/7 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 22:07:26,750 INFO L132 encePairwiseOnDemand]: 26/30 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-25 22:07:26,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 32 flow [2021-03-25 22:07:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:07:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:07:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2021-03-25 22:07:26,753 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2021-03-25 22:07:26,753 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 44 transitions. [2021-03-25 22:07:26,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 44 transitions. [2021-03-25 22:07:26,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:26,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 44 transitions. [2021-03-25 22:07:26,754 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 22:07:26,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 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 22:07:26,755 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 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 22:07:26,755 INFO L185 Difference]: Start difference. First operand has 14 places, 8 transitions, 30 flow. Second operand 4 states and 44 transitions. [2021-03-25 22:07:26,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 32 flow [2021-03-25 22:07:26,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 22:07:26,756 INFO L241 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2021-03-25 22:07:26,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2021-03-25 22:07:26,757 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2021-03-25 22:07:26,757 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:26,757 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 0 transitions, 0 flow [2021-03-25 22:07:26,758 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 0 transitions, 0 flow [2021-03-25 22:07:26,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 22:07:26,758 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 22:07:26,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:07:26,758 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 22:07:26,758 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 22:07:26,759 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:26,771 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:26,771 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-25 22:07:26,772 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 22:07:26,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 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 22:07:26,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 22:07:26,776 INFO L202 PluginConnector]: Adding new model easy7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 10:07:26 BasicIcfg [2021-03-25 22:07:26,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 22:07:26,777 INFO L168 Benchmark]: Toolchain (without parser) took 1013.08 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 236.9 MB in the beginning and 339.6 MB in the end (delta: -102.7 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.0 GB. [2021-03-25 22:07:26,778 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:07:26,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.90 ms. Allocated memory is still 255.9 MB. Free memory was 236.8 MB in the beginning and 235.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:07:26,779 INFO L168 Benchmark]: Boogie Preprocessor took 12.34 ms. Allocated memory is still 255.9 MB. Free memory was 235.4 MB in the beginning and 234.5 MB in the end (delta: 915.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:07:26,779 INFO L168 Benchmark]: RCFGBuilder took 199.22 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 239.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.0 GB. [2021-03-25 22:07:26,780 INFO L168 Benchmark]: TraceAbstraction took 776.33 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 238.7 MB in the beginning and 339.6 MB in the end (delta: -100.9 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.0 GB. [2021-03-25 22:07:26,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.90 ms. Allocated memory is still 255.9 MB. Free memory was 236.8 MB in the beginning and 235.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.34 ms. Allocated memory is still 255.9 MB. Free memory was 235.4 MB in the beginning and 234.5 MB in the end (delta: 915.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 199.22 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 239.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 776.33 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 238.7 MB in the beginning and 339.6 MB in the end (delta: -100.9 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 230.9ms, 24 PlacesBefore, 15 PlacesAfterwards, 17 TransitionsBefore, 8 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 4 FixpointIterations, 1 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 38, unknown conditional: 0, unknown unconditional: 38] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2ms, 15 PlacesBefore, 14 PlacesAfterwards, 8 TransitionsBefore, 8 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: 13.7ms, 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: 39]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 711.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 104.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 291.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=1, 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: 4.9ms SsaConstructionTime, 37.5ms SatisfiabilityAnalysisTime, 146.8ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 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...