/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 00:27:52,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 00:27:52,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 00:27:52,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-11 00:27:52,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 00:27:52,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 00:27:52,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 00:27:52,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 00:27:52,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 00:27:52,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 00:27:52,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 00:27:52,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 00:27:52,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 00:27:52,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 00:27:52,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 00:27:52,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 00:27:52,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 00:27:52,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 00:27:52,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 00:27:52,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 00:27:52,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-11 00:27:52,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 00:27:52,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 00:27:52,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 00:27:52,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 00:27:52,305 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 00:27:52,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 00:27:52,305 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 00:27:52,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 00:27:52,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 00:27:52,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 00:27:52,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 00:27:52,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 00:27:52,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 00:27:52,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 00:27:52,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 00:27:52,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 00:27:52,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 00:27:52,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 00:27:52,308 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 00:27:52,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 00:27:52,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 00:27:52,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 00:27:52,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 00:27:52,570 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 00:27:52,571 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 00:27:52,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl [2021-06-11 00:27:52,572 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl' [2021-06-11 00:27:52,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 00:27:52,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 00:27:52,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 00:27:52,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 00:27:52,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 00:27:52,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 00:27:52,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 00:27:52,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 00:27:52,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 00:27:52,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/1) ... [2021-06-11 00:27:52,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 00:27:52,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 00:27:52,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 00:27:52,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 00:27:52,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (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 [2021-06-11 00:27:52,714 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-11 00:27:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-11 00:27:52,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-11 00:27:52,715 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-11 00:27:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-11 00:27:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-11 00:27:52,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 00:27:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 00:27:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 00:27:52,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-11 00:27:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-11 00:27:52,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-11 00:27:52,717 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-11 00:27:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-11 00:27:52,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-11 00:27:52,718 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 00:27:52,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 00:27:52,838 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-11 00:27:52,839 INFO L202 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 12:27:52 BoogieIcfgContainer [2021-06-11 00:27:52,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 00:27:52,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 00:27:52,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 00:27:52,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 00:27:52,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 12:27:52" (1/2) ... [2021-06-11 00:27:52,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afc4270 and model type spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 12:27:52, skipping insertion in model container [2021-06-11 00:27:52,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 12:27:52" (2/2) ... [2021-06-11 00:27:52,843 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.bpl [2021-06-11 00:27:52,847 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 00:27:52,849 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 00:27:52,850 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 00:27:52,880 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-11 00:27:52,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-11 00:27:52,906 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 00:27:52,907 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 00:27:52,907 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 00:27:52,907 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 00:27:52,907 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 00:27:52,907 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 00:27:52,907 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 00:27:52,907 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 00:27:52,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 100 flow [2021-06-11 00:27:52,948 INFO L129 PetriNetUnfolder]: 4/30 cut-off events. [2021-06-11 00:27:52,949 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 00:27:52,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 60 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2021-06-11 00:27:52,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 100 flow [2021-06-11 00:27:52,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 28 transitions, 80 flow [2021-06-11 00:27:52,955 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 00:27:52,981 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 28 transitions, 80 flow [2021-06-11 00:27:52,984 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 28 transitions, 80 flow [2021-06-11 00:27:52,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 28 transitions, 80 flow [2021-06-11 00:27:52,996 INFO L129 PetriNetUnfolder]: 4/28 cut-off events. [2021-06-11 00:27:52,996 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 00:27:52,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 28 events. 4/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2021-06-11 00:27:52,999 INFO L151 LiptonReduction]: Number of co-enabled transitions 350 [2021-06-11 00:27:53,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:27:53,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:27:53,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:27:53,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:27:53,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:27:53,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:27:53,342 INFO L163 LiptonReduction]: Checked pairs total: 272 [2021-06-11 00:27:53,342 INFO L165 LiptonReduction]: Total number of compositions: 11 [2021-06-11 00:27:53,345 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 390 [2021-06-11 00:27:53,359 INFO L129 PetriNetUnfolder]: 4/16 cut-off events. [2021-06-11 00:27:53,359 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 00:27:53,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:27:53,360 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:27:53,360 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 00:27:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:27:53,363 INFO L82 PathProgramCache]: Analyzing trace with hash 33402517, now seen corresponding path program 1 times [2021-06-11 00:27:53,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:27:53,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49339838] [2021-06-11 00:27:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:27:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:27:53,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:27:53,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:27:53,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-11 00:27:53,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 00:27:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:27:53,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49339838] [2021-06-11 00:27:53,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:27:53,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:27:53,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199259754] [2021-06-11 00:27:53,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 00:27:53,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:27:53,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 00:27:53,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 00:27:53,506 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-06-11 00:27:53,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-06-11 00:27:53,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:27:53,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-06-11 00:27:53,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:27:53,581 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L47-->thread4EXIT: Formula: (= v_x_1_18 0) InVars {} OutVars{x_1=v_x_1_18} AuxVars[] AssignedVars[x_1][10], [49#(and (<= 0 x_1) (<= x_1 0)), 19#thread1EXITtrue, thread4Thread1of1ForFork2InUse, 10#L60true, thread2Thread1of1ForFork0InUse, thread3Thread1of1ForFork1InUse, 28#L26true, 29#L36true, thread1Thread1of1ForFork3InUse, 31#thread4EXITtrue]) [2021-06-11 00:27:53,581 INFO L384 tUnfolder$Statistics]: this new event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,581 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,581 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,581 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-11 00:27:53,582 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([109] L47-->L47: Formula: (= (* 20 v_x_1_102) v_x_1_100) InVars {x_1=v_x_1_102} OutVars{x_1=v_x_1_100} AuxVars[] AssignedVars[x_1][11], [19#thread1EXITtrue, 6#L47true, thread4Thread1of1ForFork2InUse, 10#L60true, thread2Thread1of1ForFork0InUse, thread3Thread1of1ForFork1InUse, 28#L26true, 29#L36true, thread1Thread1of1ForFork3InUse, 47#true]) [2021-06-11 00:27:53,582 INFO L384 tUnfolder$Statistics]: this new event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,582 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,582 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-11 00:27:53,582 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,597 INFO L129 PetriNetUnfolder]: 129/192 cut-off events. [2021-06-11 00:27:53,597 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-06-11 00:27:53,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 192 events. 129/192 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 553 event pairs, 9 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 370. Up to 67 conditions per place. [2021-06-11 00:27:53,603 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 15 selfloop transitions, 7 changer transitions 3/33 dead transitions. [2021-06-11 00:27:53,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 140 flow [2021-06-11 00:27:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 00:27:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 00:27:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2021-06-11 00:27:53,611 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2021-06-11 00:27:53,611 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 98 transitions. [2021-06-11 00:27:53,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 98 transitions. [2021-06-11 00:27:53,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:27:53,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 98 transitions. [2021-06-11 00:27:53,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-06-11 00:27:53,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2021-06-11 00:27:53,618 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2021-06-11 00:27:53,619 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 58 flow. Second operand 4 states and 98 transitions. [2021-06-11 00:27:53,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 140 flow [2021-06-11 00:27:53,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-06-11 00:27:53,623 INFO L241 Difference]: Finished difference. Result has 24 places, 24 transitions, 98 flow [2021-06-11 00:27:53,624 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=24, PETRI_TRANSITIONS=24} [2021-06-11 00:27:53,625 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2021-06-11 00:27:53,625 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 24 transitions, 98 flow [2021-06-11 00:27:53,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-06-11 00:27:53,625 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:27:53,625 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 00:27:53,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 00:27:53,625 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 00:27:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:27:53,626 INFO L82 PathProgramCache]: Analyzing trace with hash 663914357, now seen corresponding path program 2 times [2021-06-11 00:27:53,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:27:53,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174158529] [2021-06-11 00:27:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:27:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:27:53,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:27:53,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:27:53,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:27:53,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-11 00:27:53,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 00:27:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:27:53,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174158529] [2021-06-11 00:27:53,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:27:53,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:27:53,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107817891] [2021-06-11 00:27:53,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 00:27:53,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:27:53,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 00:27:53,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 00:27:53,663 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2021-06-11 00:27:53,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 24 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-06-11 00:27:53,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:27:53,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2021-06-11 00:27:53,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:27:53,719 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([109] L47-->L47: Formula: (= (* 20 v_x_1_102) v_x_1_100) InVars {x_1=v_x_1_102} OutVars{x_1=v_x_1_100} AuxVars[] AssignedVars[x_1][19], [19#thread1EXITtrue, 6#L47true, Black: 49#(and (<= 0 x_1) (<= x_1 0)), Black: 52#(and (<= 0 x_1) (< x_0 (+ x_1 1)) (<= x_1 x_0) (<= x_1 0)), 10#L60true, 60#(and (<= x_0 0) (<= 0 x_0)), 28#L26true, 29#L36true, 47#true]) [2021-06-11 00:27:53,719 INFO L384 tUnfolder$Statistics]: this new event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,719 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,719 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-06-11 00:27:53,719 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-06-11 00:27:53,735 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L47-->thread4EXIT: Formula: (= v_x_1_18 0) InVars {} OutVars{x_1=v_x_1_18} AuxVars[] AssignedVars[x_1][21], [49#(and (<= 0 x_1) (<= x_1 0)), 19#thread1EXITtrue, Black: 52#(and (<= 0 x_1) (< x_0 (+ x_1 1)) (<= x_1 x_0) (<= x_1 0)), Black: 47#true, 10#L60true, 28#L26true, 29#L36true, 31#thread4EXITtrue, 63#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1)))]) [2021-06-11 00:27:53,736 INFO L384 tUnfolder$Statistics]: this new event has 6 ancestors and is not cut-off event [2021-06-11 00:27:53,736 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is not cut-off event [2021-06-11 00:27:53,736 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is not cut-off event [2021-06-11 00:27:53,736 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is not cut-off event [2021-06-11 00:27:53,759 INFO L129 PetriNetUnfolder]: 162/241 cut-off events. [2021-06-11 00:27:53,759 INFO L130 PetriNetUnfolder]: For 163/194 co-relation queries the response was YES. [2021-06-11 00:27:53,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 241 events. 162/241 cut-off events. For 163/194 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 734 event pairs, 5 based on Foata normal form. 2/230 useless extension candidates. Maximal degree in co-relation 657. Up to 82 conditions per place. [2021-06-11 00:27:53,763 INFO L132 encePairwiseOnDemand]: 38/45 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2021-06-11 00:27:53,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 45 transitions, 262 flow [2021-06-11 00:27:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 00:27:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 00:27:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2021-06-11 00:27:53,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2021-06-11 00:27:53,767 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 97 transitions. [2021-06-11 00:27:53,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 97 transitions. [2021-06-11 00:27:53,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:27:53,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 97 transitions. [2021-06-11 00:27:53,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2021-06-11 00:27:53,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2021-06-11 00:27:53,769 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2021-06-11 00:27:53,769 INFO L185 Difference]: Start difference. First operand has 24 places, 24 transitions, 98 flow. Second operand 4 states and 97 transitions. [2021-06-11 00:27:53,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 45 transitions, 262 flow [2021-06-11 00:27:53,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 00:27:53,771 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2021-06-11 00:27:53,771 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2021-06-11 00:27:53,772 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2021-06-11 00:27:53,772 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2021-06-11 00:27:53,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-06-11 00:27:53,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 00:27:53,774 INFO L202 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 12:27:53 BasicIcfg [2021-06-11 00:27:53,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 00:27:53,775 INFO L168 Benchmark]: Toolchain (without parser) took 1175.69 ms. Allocated memory is still 337.6 MB. Free memory was 317.2 MB in the beginning and 243.2 MB in the end (delta: 73.9 MB). Peak memory consumption was 78.0 MB. Max. memory is 16.0 GB. [2021-06-11 00:27:53,775 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 337.6 MB. Free memory is still 318.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 00:27:53,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.94 ms. Allocated memory is still 337.6 MB. Free memory was 317.1 MB in the beginning and 315.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-11 00:27:53,776 INFO L168 Benchmark]: Boogie Preprocessor took 13.51 ms. Allocated memory is still 337.6 MB. Free memory was 315.7 MB in the beginning and 314.7 MB in the end (delta: 943.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 00:27:53,777 INFO L168 Benchmark]: RCFGBuilder took 204.28 ms. Allocated memory is still 337.6 MB. Free memory was 314.6 MB in the beginning and 304.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-11 00:27:53,777 INFO L168 Benchmark]: TraceAbstraction took 934.66 ms. Allocated memory is still 337.6 MB. Free memory was 303.8 MB in the beginning and 243.2 MB in the end (delta: 60.5 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.0 GB. [2021-06-11 00:27:53,779 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 337.6 MB. Free memory is still 318.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.94 ms. Allocated memory is still 337.6 MB. Free memory was 317.1 MB in the beginning and 315.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.51 ms. Allocated memory is still 337.6 MB. Free memory was 315.7 MB in the beginning and 314.7 MB in the end (delta: 943.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 204.28 ms. Allocated memory is still 337.6 MB. Free memory was 314.6 MB in the beginning and 304.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 934.66 ms. Allocated memory is still 337.6 MB. Free memory was 303.8 MB in the beginning and 243.2 MB in the end (delta: 60.5 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 358.4ms, 37 PlacesBefore, 26 PlacesAfterwards, 28 TransitionsBefore, 17 TransitionsAfterwards, 350 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 272 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 200, positive: 192, positive conditional: 0, positive unconditional: 192, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 173, positive: 165, positive conditional: 0, positive unconditional: 165, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 173, positive: 165, positive conditional: 0, positive unconditional: 165, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 173, positive: 142, positive conditional: 0, positive unconditional: 142, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 127, positive: 81, positive conditional: 0, positive unconditional: 81, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 200, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 173, unknown conditional: 0, unknown unconditional: 173] , Statistics on independence cache: Total cache size (in pairs): 240, Positive cache size: 232, Positive conditional cache size: 0, Positive unconditional cache size: 232, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - PositiveResult [Line: 66]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 869.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 232.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 448.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 7 SDslu, 8 SDs, 0 SdLazy, 48 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred 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: 4.8ms SsaConstructionTime, 18.0ms SatisfiabilityAnalysisTime, 78.8ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 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...