/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 14:37:19,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 14:37:19,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 14:37:19,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 14:37:19,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 14:37:19,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 14:37:19,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 14:37:19,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 14:37:19,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 14:37:19,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 14:37:19,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 14:37:19,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 14:37:19,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 14:37:19,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 14:37:19,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 14:37:19,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 14:37:19,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 14:37:19,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 14:37:19,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 14:37:19,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 14:37:19,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 14:37:19,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 14:37:19,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 14:37:19,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 14:37:19,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 14:37:19,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 14:37:19,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 14:37:19,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 14:37:19,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 14:37:19,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 14:37:19,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 14:37:19,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 14:37:19,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 14:37:19,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 14:37:19,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 14:37:19,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 14:37:19,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 14:37:19,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 14:37:19,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 14:37:19,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 14:37:19,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 14:37:19,889 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 14:37:19,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 14:37:19,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 14:37:19,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 14:37:19,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 14:37:19,929 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 14:37:19,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 14:37:19,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 14:37:19,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 14:37:19,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 14:37:19,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 14:37:19,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 14:37:19,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 14:37:19,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 14:37:19,931 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 14:37:19,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 14:37:19,931 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 14:37:19,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 14:37:19,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 14:37:19,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 14:37:19,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 14:37:19,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 14:37:19,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 14:37:19,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 14:37:19,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 14:37:19,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 14:37:19,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 14:37:19,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 14:37:19,933 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 14:37:19,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 14:37:19,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 14:37:19,933 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 14:37:20,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 14:37:20,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 14:37:20,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 14:37:20,234 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 14:37:20,235 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 14:37:20,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl [2021-03-26 14:37:20,236 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/match-symm.wvr.bpl' [2021-03-26 14:37:20,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 14:37:20,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 14:37:20,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 14:37:20,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 14:37:20,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 14:37:20,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 14:37:20,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 14:37:20,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 14:37:20,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 14:37:20,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... [2021-03-26 14:37:20,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 14:37:20,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 14:37:20,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 14:37:20,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 14:37:20,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 14:37:20,372 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-26 14:37:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 14:37:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 14:37:20,373 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-26 14:37:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-26 14:37:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-26 14:37:20,373 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 14:37:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 14:37:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 14:37:20,374 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 14:37:20,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 14:37:20,506 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 14:37:20,507 INFO L202 PluginConnector]: Adding new model match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 02:37:20 BoogieIcfgContainer [2021-03-26 14:37:20,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 14:37:20,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 14:37:20,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 14:37:20,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 14:37:20,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:37:20" (1/2) ... [2021-03-26 14:37:20,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d89c5e and model type match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 02:37:20, skipping insertion in model container [2021-03-26 14:37:20,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 02:37:20" (2/2) ... [2021-03-26 14:37:20,513 INFO L111 eAbstractionObserver]: Analyzing ICFG match-symm.wvr.bpl [2021-03-26 14:37:20,517 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 14:37:20,520 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 14:37:20,520 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 14:37:20,543 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-26 14:37:20,558 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 14:37:20,576 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 14:37:20,576 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 14:37:20,576 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 14:37:20,576 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 14:37:20,576 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 14:37:20,576 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 14:37:20,576 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 14:37:20,576 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 14:37:20,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 44 flow [2021-03-26 14:37:20,599 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-26 14:37:20,599 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 14:37:20,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 0/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 14:37:20,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 14 transitions, 44 flow [2021-03-26 14:37:20,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 10 transitions, 32 flow [2021-03-26 14:37:20,604 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:37:20,616 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 10 transitions, 32 flow [2021-03-26 14:37:20,618 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 10 transitions, 32 flow [2021-03-26 14:37:20,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 10 transitions, 32 flow [2021-03-26 14:37:20,624 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 14:37:20,624 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 14:37:20,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 10 events. 0/10 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 14:37:20,626 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 14:37:20,683 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-26 14:37:20,683 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 14:37:20,684 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 80 [2021-03-26 14:37:20,694 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 14:37:20,694 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 14:37:20,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:37:20,695 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:37:20,695 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:37:20,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:37:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1664346307, now seen corresponding path program 1 times [2021-03-26 14:37:20,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:37:20,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283984843] [2021-03-26 14:37:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:37:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:37:20,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:37:20,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:37:20,941 INFO L142 QuantifierPusher]: treesize reduction 1354, result has 11.6 percent of original size [2021-03-26 14:37:20,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-03-26 14:37:21,191 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-03-26 14:37:21,194 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-03-26 14:37:21,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 14:37:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:37:21,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283984843] [2021-03-26 14:37:21,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:37:21,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 14:37:21,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155001356] [2021-03-26 14:37:21,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 14:37:21,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:37:21,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 14:37:21,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 14:37:21,236 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 17 [2021-03-26 14:37:21,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 26 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:37:21,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 17 [2021-03-26 14:37:21,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:37:21,323 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-26 14:37:21,324 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 14:37:21,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 11 events. 0/11 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 14:37:21,325 INFO L132 encePairwiseOnDemand]: 14/17 looper letters, 2 selfloop transitions, 1 changer transitions 1/8 dead transitions. [2021-03-26 14:37:21,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 8 transitions, 36 flow [2021-03-26 14:37:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 14:37:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 14:37:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2021-03-26 14:37:21,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2021-03-26 14:37:21,334 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 45 transitions. [2021-03-26 14:37:21,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 45 transitions. [2021-03-26 14:37:21,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:37:21,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 45 transitions. [2021-03-26 14:37:21,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,342 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,343 INFO L185 Difference]: Start difference. First operand has 14 places, 7 transitions, 26 flow. Second operand 4 states and 45 transitions. [2021-03-26 14:37:21,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 8 transitions, 36 flow [2021-03-26 14:37:21,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 8 transitions, 28 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 14:37:21,347 INFO L241 Difference]: Finished difference. Result has 15 places, 7 transitions, 25 flow [2021-03-26 14:37:21,349 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=25, PETRI_PLACES=15, PETRI_TRANSITIONS=7} [2021-03-26 14:37:21,349 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 1 predicate places. [2021-03-26 14:37:21,350 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:37:21,350 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 7 transitions, 25 flow [2021-03-26 14:37:21,350 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 7 transitions, 25 flow [2021-03-26 14:37:21,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 7 transitions, 25 flow [2021-03-26 14:37:21,353 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-26 14:37:21,353 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 14:37:21,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 8 events. 0/8 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 5 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 14:37:21,354 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-26 14:37:21,354 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 14:37:21,355 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 14:37:21,355 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 14:37:21,356 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 25 flow [2021-03-26 14:37:21,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:37:21,356 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:37:21,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 14:37:21,357 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:37:21,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:37:21,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1662558847, now seen corresponding path program 2 times [2021-03-26 14:37:21,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:37:21,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289392104] [2021-03-26 14:37:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:37:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:37:21,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:37:21,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:37:21,477 INFO L142 QuantifierPusher]: treesize reduction 10040, result has 2.0 percent of original size [2021-03-26 14:37:21,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-03-26 14:37:21,650 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-03-26 14:37:21,654 INFO L142 QuantifierPusher]: treesize reduction 23, result has 58.2 percent of original size [2021-03-26 14:37:21,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-26 14:37:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:37:21,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289392104] [2021-03-26 14:37:21,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:37:21,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 14:37:21,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59280046] [2021-03-26 14:37:21,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 14:37:21,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:37:21,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 14:37:21,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 14:37:21,686 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 17 [2021-03-26 14:37:21,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 25 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:37:21,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 17 [2021-03-26 14:37:21,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:37:21,760 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-26 14:37:21,762 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-03-26 14:37:21,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 0/7 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 4 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 14:37:21,764 INFO L132 encePairwiseOnDemand]: 14/17 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-26 14:37:21,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 7 transitions, 32 flow [2021-03-26 14:37:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 14:37:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 14:37:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2021-03-26 14:37:21,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2021-03-26 14:37:21,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 44 transitions. [2021-03-26 14:37:21,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 44 transitions. [2021-03-26 14:37:21,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:37:21,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 44 transitions. [2021-03-26 14:37:21,771 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) [2021-03-26 14:37:21,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,774 INFO L185 Difference]: Start difference. First operand has 14 places, 7 transitions, 25 flow. Second operand 4 states and 44 transitions. [2021-03-26 14:37:21,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 7 transitions, 32 flow [2021-03-26 14:37:21,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 14:37:21,775 INFO L241 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-03-26 14:37:21,776 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2021-03-26 14:37:21,776 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, 1 predicate places. [2021-03-26 14:37:21,776 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:37:21,776 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 0 transitions, 0 flow [2021-03-26 14:37:21,780 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 0 transitions, 0 flow [2021-03-26 14:37:21,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 14:37:21,781 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 14:37:21,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 14:37:21,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 14:37:21,781 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 14:37:21,781 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 14:37:21,781 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 14:37:21,781 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 14:37:21,782 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 14:37:21,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:37:21,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 14:37:21,786 INFO L202 PluginConnector]: Adding new model match-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 02:37:21 BasicIcfg [2021-03-26 14:37:21,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 14:37:21,787 INFO L168 Benchmark]: Toolchain (without parser) took 1518.97 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 236.5 MB in the beginning and 326.1 MB in the end (delta: -89.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-03-26 14:37:21,787 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 14:37:21,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.71 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 14:37:21,788 INFO L168 Benchmark]: Boogie Preprocessor took 14.38 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.1 MB in the end (delta: 924.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 14:37:21,788 INFO L168 Benchmark]: RCFGBuilder took 195.13 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 240.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.0 GB. [2021-03-26 14:37:21,789 INFO L168 Benchmark]: TraceAbstraction took 1277.46 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 239.8 MB in the beginning and 326.1 MB in the end (delta: -86.2 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.0 GB. [2021-03-26 14:37:21,790 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 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.71 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.38 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.1 MB in the end (delta: 924.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 195.13 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 240.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1277.46 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 239.8 MB in the beginning and 326.1 MB in the end (delta: -86.2 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.7ms, 17 PlacesBefore, 14 PlacesAfterwards, 10 TransitionsBefore, 7 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3ms, 15 PlacesBefore, 14 PlacesAfterwards, 7 TransitionsBefore, 7 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 15 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1210.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 211.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 113.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 562.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.9ms SsaConstructionTime, 42.8ms SatisfiabilityAnalysisTime, 728.8ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...