/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 19:23:46,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 19:23:46,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 19:23:46,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 19:23:46,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 19:23:46,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 19:23:46,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 19:23:46,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 19:23:46,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 19:23:46,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 19:23:46,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 19:23:46,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 19:23:46,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 19:23:46,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 19:23:46,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 19:23:46,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 19:23:46,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 19:23:46,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 19:23:46,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 19:23:46,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 19:23:46,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 19:23:46,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 19:23:46,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 19:23:46,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 19:23:46,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 19:23:46,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 19:23:46,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 19:23:46,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 19:23:46,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2021-03-25 19:23:46,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 19:23:46,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 19:23:46,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 19:23:46,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 19:23:46,905 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 19:23:46,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 19:23:46,905 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 19:23:46,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 19:23:46,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 19:23:46,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 19:23:46,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 19:23:46,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 19:23:46,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 19:23:46,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 19:23:46,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 19:23:46,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 19:23:46,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 19:23:46,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 19:23:46,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 19:23:46,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 19:23:46,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 19:23:46,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 19:23:46,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 19:23:46,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 19:23:46,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 19:23:46,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 19:23:46,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 19:23:46,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 19:23:46,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 19:23:46,909 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 19:23:47,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 19:23:47,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 19:23:47,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 19:23:47,237 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 19:23:47,238 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 19:23:47,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-trans.wvr.bpl [2021-03-25 19:23:47,250 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/simpl-str-trans.wvr.bpl' [2021-03-25 19:23:47,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 19:23:47,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 19:23:47,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 19:23:47,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 19:23:47,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 19:23:47,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 19:23:47,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 19:23:47,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 19:23:47,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 19:23:47,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... [2021-03-25 19:23:47,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 19:23:47,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 19:23:47,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 19:23:47,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 19:23:47,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 19:23:47,380 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 19:23:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 19:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 19:23:47,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 19:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 19:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 19:23:47,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 19:23:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 19:23:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 19:23:47,381 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 19:23:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 19:23:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 19:23:47,382 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 19:23:47,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 19:23:47,508 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 19:23:47,509 INFO L202 PluginConnector]: Adding new model simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:23:47 BoogieIcfgContainer [2021-03-25 19:23:47,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 19:23:47,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 19:23:47,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 19:23:47,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 19:23:47,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:23:47" (1/2) ... [2021-03-25 19:23:47,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e64ba31 and model type simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:23:47, skipping insertion in model container [2021-03-25 19:23:47,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:23:47" (2/2) ... [2021-03-25 19:23:47,515 INFO L111 eAbstractionObserver]: Analyzing ICFG simpl-str-trans.wvr.bpl [2021-03-25 19:23:47,520 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 19:23:47,523 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 19:23:47,523 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 19:23:47,552 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 19:23:47,571 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 19:23:47,588 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 19:23:47,588 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 19:23:47,588 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 19:23:47,588 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 19:23:47,588 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 19:23:47,589 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 19:23:47,589 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 19:23:47,589 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 19:23:47,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-03-25 19:23:47,614 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 19:23:47,615 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 19:23:47,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:23:47,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-03-25 19:23:47,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-03-25 19:23:47,620 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:23:47,631 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 46 flow [2021-03-25 19:23:47,634 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 46 flow [2021-03-25 19:23:47,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 14 transitions, 46 flow [2021-03-25 19:23:47,641 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 19:23:47,641 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 19:23:47,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 14 events. 0/14 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:23:47,642 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 19:23:47,714 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-25 19:23:47,714 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 19:23:47,716 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-03-25 19:23:47,738 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-25 19:23:47,738 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 19:23:47,738 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:23:47,739 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:23:47,739 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:23:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:23:47,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1899370987, now seen corresponding path program 1 times [2021-03-25 19:23:47,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:23:47,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027700458] [2021-03-25 19:23:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:23:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:23:47,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:23:48,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:23:48,016 INFO L142 QuantifierPusher]: treesize reduction 27, result has 41.3 percent of original size [2021-03-25 19:23:48,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 19:23:48,053 INFO L142 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-03-25 19:23:48,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 19:23:48,090 INFO L142 QuantifierPusher]: treesize reduction 30, result has 45.5 percent of original size [2021-03-25 19:23:48,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 19:23:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:23:48,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027700458] [2021-03-25 19:23:48,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:23:48,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:23:48,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839719108] [2021-03-25 19:23:48,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:23:48,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:23:48,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:23:48,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:23:48,143 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 19:23:48,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 10 transitions, 38 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:23:48,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 19:23:48,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:23:48,324 INFO L129 PetriNetUnfolder]: 3/29 cut-off events. [2021-03-25 19:23:48,325 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-25 19:23:48,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 29 events. 3/29 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 1 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 42. Up to 7 conditions per place. [2021-03-25 19:23:48,327 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 1/14 dead transitions. [2021-03-25 19:23:48,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 62 flow [2021-03-25 19:23:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:23:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:23:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 19:23:48,337 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 19:23:48,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:23:48,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,346 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,347 INFO L185 Difference]: Start difference. First operand has 20 places, 10 transitions, 38 flow. Second operand 5 states and 79 transitions. [2021-03-25 19:23:48,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 62 flow [2021-03-25 19:23:48,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 50 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 19:23:48,351 INFO L241 Difference]: Finished difference. Result has 21 places, 11 transitions, 41 flow [2021-03-25 19:23:48,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=41, PETRI_PLACES=21, PETRI_TRANSITIONS=11} [2021-03-25 19:23:48,353 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2021-03-25 19:23:48,354 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:23:48,354 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 11 transitions, 41 flow [2021-03-25 19:23:48,354 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 11 transitions, 41 flow [2021-03-25 19:23:48,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 11 transitions, 41 flow [2021-03-25 19:23:48,359 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 19:23:48,360 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-03-25 19:23:48,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 19 events. 0/19 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 19:23:48,360 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-25 19:23:48,361 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:23:48,361 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:23:48,361 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 19:23:48,363 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 41 flow [2021-03-25 19:23:48,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:23:48,363 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:23:48,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 19:23:48,364 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:23:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:23:48,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1456775317, now seen corresponding path program 2 times [2021-03-25 19:23:48,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:23:48,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163978007] [2021-03-25 19:23:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:23:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:23:48,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:23:48,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:23:48,415 INFO L142 QuantifierPusher]: treesize reduction 68, result has 34.6 percent of original size [2021-03-25 19:23:48,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 19:23:48,459 INFO L142 QuantifierPusher]: treesize reduction 59, result has 49.6 percent of original size [2021-03-25 19:23:48,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-25 19:23:48,546 INFO L142 QuantifierPusher]: treesize reduction 59, result has 35.9 percent of original size [2021-03-25 19:23:48,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 19:23:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:23:48,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163978007] [2021-03-25 19:23:48,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:23:48,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:23:48,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362996614] [2021-03-25 19:23:48,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:23:48,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:23:48,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:23:48,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:23:48,576 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 19:23:48,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 41 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:23:48,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 19:23:48,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:23:48,752 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-03-25 19:23:48,757 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-03-25 19:23:48,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 2/29 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 58. Up to 7 conditions per place. [2021-03-25 19:23:48,759 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 2 changer transitions 3/16 dead transitions. [2021-03-25 19:23:48,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 85 flow [2021-03-25 19:23:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:23:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:23:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 19:23:48,761 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 19:23:48,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:23:48,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,766 INFO L185 Difference]: Start difference. First operand has 20 places, 11 transitions, 41 flow. Second operand 5 states and 79 transitions. [2021-03-25 19:23:48,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 85 flow [2021-03-25 19:23:48,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 78 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 19:23:48,769 INFO L241 Difference]: Finished difference. Result has 25 places, 11 transitions, 51 flow [2021-03-25 19:23:48,769 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=51, PETRI_PLACES=25, PETRI_TRANSITIONS=11} [2021-03-25 19:23:48,770 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2021-03-25 19:23:48,770 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:23:48,770 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 11 transitions, 51 flow [2021-03-25 19:23:48,771 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 11 transitions, 51 flow [2021-03-25 19:23:48,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 11 transitions, 51 flow [2021-03-25 19:23:48,783 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 19:23:48,783 INFO L130 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2021-03-25 19:23:48,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 17 events. 0/17 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 23 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 19:23:48,783 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 19:23:48,785 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:23:48,786 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:23:48,786 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 19:23:48,786 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 51 flow [2021-03-25 19:23:48,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,787 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:23:48,787 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:23:48,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 19:23:48,787 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:23:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:23:48,787 INFO L82 PathProgramCache]: Analyzing trace with hash 127869563, now seen corresponding path program 3 times [2021-03-25 19:23:48,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:23:48,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376312960] [2021-03-25 19:23:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:23:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:23:48,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:23:48,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:23:48,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-03-25 19:23:48,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 19:23:48,849 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.0 percent of original size [2021-03-25 19:23:48,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-25 19:23:48,865 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-03-25 19:23:48,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 19:23:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:23:48,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376312960] [2021-03-25 19:23:48,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:23:48,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:23:48,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115259215] [2021-03-25 19:23:48,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:23:48,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:23:48,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:23:48,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:23:48,878 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 19:23:48,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:23:48,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 19:23:48,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:23:48,961 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-03-25 19:23:48,961 INFO L130 PetriNetUnfolder]: For 43/46 co-relation queries the response was YES. [2021-03-25 19:23:48,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 23 events. 1/23 cut-off events. For 43/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 56. Up to 5 conditions per place. [2021-03-25 19:23:48,962 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 5 selfloop transitions, 3 changer transitions 1/15 dead transitions. [2021-03-25 19:23:48,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 93 flow [2021-03-25 19:23:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:23:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:23:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-03-25 19:23:48,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2021-03-25 19:23:48,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:23:48,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-03-25 19:23:48,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,965 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,965 INFO L185 Difference]: Start difference. First operand has 24 places, 11 transitions, 51 flow. Second operand 5 states and 79 transitions. [2021-03-25 19:23:48,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 93 flow [2021-03-25 19:23:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 74 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-25 19:23:48,966 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 62 flow [2021-03-25 19:23:48,966 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=12} [2021-03-25 19:23:48,966 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2021-03-25 19:23:48,967 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:23:48,967 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 12 transitions, 62 flow [2021-03-25 19:23:48,967 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 12 transitions, 62 flow [2021-03-25 19:23:48,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 12 transitions, 62 flow [2021-03-25 19:23:48,971 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 19:23:48,971 INFO L130 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2021-03-25 19:23:48,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 19 events. 0/19 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 19:23:48,971 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 19:23:48,972 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:23:48,972 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:23:48,972 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 19:23:48,973 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 62 flow [2021-03-25 19:23:48,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:48,973 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:23:48,973 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:23:48,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 19:23:48,974 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:23:48,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:23:48,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1979317449, now seen corresponding path program 4 times [2021-03-25 19:23:48,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:23:48,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802417842] [2021-03-25 19:23:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:23:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:23:49,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:23:49,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:23:49,009 INFO L142 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size [2021-03-25 19:23:49,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 19:23:49,021 INFO L142 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-03-25 19:23:49,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 19:23:49,035 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-03-25 19:23:49,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 19:23:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:23:49,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802417842] [2021-03-25 19:23:49,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:23:49,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:23:49,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047307422] [2021-03-25 19:23:49,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:23:49,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:23:49,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:23:49,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:23:49,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 19:23:49,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 12 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:23:49,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 19:23:49,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:23:49,134 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-25 19:23:49,134 INFO L130 PetriNetUnfolder]: For 34/37 co-relation queries the response was YES. [2021-03-25 19:23:49,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 20 events. 1/20 cut-off events. For 34/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 55. Up to 5 conditions per place. [2021-03-25 19:23:49,135 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 4/14 dead transitions. [2021-03-25 19:23:49,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 14 transitions, 92 flow [2021-03-25 19:23:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:23:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:23:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-03-25 19:23:49,139 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2021-03-25 19:23:49,139 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-03-25 19:23:49,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-03-25 19:23:49,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:23:49,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-03-25 19:23:49,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,141 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,141 INFO L185 Difference]: Start difference. First operand has 26 places, 12 transitions, 62 flow. Second operand 5 states and 78 transitions. [2021-03-25 19:23:49,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 14 transitions, 92 flow [2021-03-25 19:23:49,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 14 transitions, 88 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 19:23:49,145 INFO L241 Difference]: Finished difference. Result has 30 places, 10 transitions, 49 flow [2021-03-25 19:23:49,146 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=30, PETRI_TRANSITIONS=10} [2021-03-25 19:23:49,146 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2021-03-25 19:23:49,146 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:23:49,146 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 10 transitions, 49 flow [2021-03-25 19:23:49,146 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 10 transitions, 49 flow [2021-03-25 19:23:49,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 10 transitions, 49 flow [2021-03-25 19:23:49,149 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 19:23:49,149 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-03-25 19:23:49,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 10 events. 0/10 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:23:49,149 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 19:23:49,151 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:23:49,151 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:23:49,151 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 19:23:49,152 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 10 transitions, 49 flow [2021-03-25 19:23:49,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,152 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:23:49,152 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:23:49,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 19:23:49,152 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:23:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:23:49,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1484480947, now seen corresponding path program 5 times [2021-03-25 19:23:49,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:23:49,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248900395] [2021-03-25 19:23:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:23:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:23:49,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:23:49,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:23:49,228 INFO L142 QuantifierPusher]: treesize reduction 77, result has 18.1 percent of original size [2021-03-25 19:23:49,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:23:49,242 INFO L142 QuantifierPusher]: treesize reduction 54, result has 43.2 percent of original size [2021-03-25 19:23:49,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-25 19:23:49,283 INFO L142 QuantifierPusher]: treesize reduction 46, result has 40.3 percent of original size [2021-03-25 19:23:49,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 19:23:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:23:49,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248900395] [2021-03-25 19:23:49,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:23:49,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:23:49,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382339746] [2021-03-25 19:23:49,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:23:49,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:23:49,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:23:49,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:23:49,313 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 19:23:49,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 10 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:23:49,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 19:23:49,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:23:49,395 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 19:23:49,396 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 19:23:49,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 16 events. 0/16 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 19:23:49,397 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 1 changer transitions 2/12 dead transitions. [2021-03-25 19:23:49,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 12 transitions, 80 flow [2021-03-25 19:23:49,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:23:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:23:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-03-25 19:23:49,398 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2021-03-25 19:23:49,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-03-25 19:23:49,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-03-25 19:23:49,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:23:49,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-03-25 19:23:49,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-03-25 19:23:49,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,401 INFO L185 Difference]: Start difference. First operand has 27 places, 10 transitions, 49 flow. Second operand 5 states and 77 transitions. [2021-03-25 19:23:49,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 12 transitions, 80 flow [2021-03-25 19:23:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 47 flow, removed 5 selfloop flow, removed 11 redundant places. [2021-03-25 19:23:49,402 INFO L241 Difference]: Finished difference. Result has 23 places, 10 transitions, 35 flow [2021-03-25 19:23:49,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=35, PETRI_PLACES=23, PETRI_TRANSITIONS=10} [2021-03-25 19:23:49,402 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2021-03-25 19:23:49,402 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:23:49,403 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 10 transitions, 35 flow [2021-03-25 19:23:49,404 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 10 transitions, 35 flow [2021-03-25 19:23:49,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 35 flow [2021-03-25 19:23:49,407 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 19:23:49,407 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 19:23:49,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 0/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:23:49,407 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 19:23:49,408 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:23:49,408 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:23:49,408 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 19:23:49,409 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 35 flow [2021-03-25 19:23:49,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,409 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:23:49,409 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:23:49,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 19:23:49,410 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:23:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:23:49,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1092737289, now seen corresponding path program 6 times [2021-03-25 19:23:49,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:23:49,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291368060] [2021-03-25 19:23:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:23:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:23:49,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:23:49,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:23:49,432 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.9 percent of original size [2021-03-25 19:23:49,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 19:23:49,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-25 19:23:49,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-25 19:23:49,464 INFO L142 QuantifierPusher]: treesize reduction 14, result has 61.1 percent of original size [2021-03-25 19:23:49,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 19:23:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:23:49,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291368060] [2021-03-25 19:23:49,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:23:49,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:23:49,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32795845] [2021-03-25 19:23:49,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:23:49,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:23:49,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:23:49,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:23:49,476 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 23 [2021-03-25 19:23:49,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 10 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:23:49,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 23 [2021-03-25 19:23:49,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:23:49,554 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 19:23:49,554 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 19:23:49,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 10 events. 0/10 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 19:23:49,554 INFO L132 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2021-03-25 19:23:49,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 10 transitions, 44 flow [2021-03-25 19:23:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:23:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:23:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-03-25 19:23:49,555 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2021-03-25 19:23:49,555 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-03-25 19:23:49,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-03-25 19:23:49,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:23:49,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-03-25 19:23:49,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,556 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 35 flow. Second operand 5 states and 75 transitions. [2021-03-25 19:23:49,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 10 transitions, 44 flow [2021-03-25 19:23:49,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 10 transitions, 40 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 19:23:49,557 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-03-25 19:23:49,557 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-03-25 19:23:49,557 INFO L343 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2021-03-25 19:23:49,557 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:23:49,557 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-25 19:23:49,558 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-25 19:23:49,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 19:23:49,558 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 19:23:49,558 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 19:23:49,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 19:23:49,558 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 19:23:49,558 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:23:49,558 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:23:49,558 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 19:23:49,559 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 19:23:49,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:23:49,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 19:23:49,562 INFO L202 PluginConnector]: Adding new model simpl-str-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:23:49 BasicIcfg [2021-03-25 19:23:49,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 19:23:49,563 INFO L168 Benchmark]: Toolchain (without parser) took 2285.86 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 236.7 MB in the beginning and 293.8 MB in the end (delta: -57.0 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.0 GB. [2021-03-25 19:23:49,563 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 171.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:23:49,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.32 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 19:23:49,564 INFO L168 Benchmark]: Boogie Preprocessor took 14.43 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.3 MB in the end (delta: 763.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 19:23:49,564 INFO L168 Benchmark]: RCFGBuilder took 191.63 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 240.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-25 19:23:49,564 INFO L168 Benchmark]: TraceAbstraction took 2051.28 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 239.7 MB in the beginning and 293.8 MB in the end (delta: -54.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.0 GB. [2021-03-25 19:23:49,566 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 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 171.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.32 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.43 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.3 MB in the end (delta: 763.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 191.63 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 240.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2051.28 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 239.7 MB in the beginning and 293.8 MB in the end (delta: -54.0 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 80.4ms, 24 PlacesBefore, 20 PlacesAfterwards, 14 TransitionsBefore, 10 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2ms, 21 PlacesBefore, 20 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.0ms, 25 PlacesBefore, 24 PlacesAfterwards, 11 TransitionsBefore, 11 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1ms, 27 PlacesBefore, 26 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2ms, 30 PlacesBefore, 27 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1ms, 23 PlacesBefore, 21 PlacesAfterwards, 10 TransitionsBefore, 10 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 22 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 47]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1975.2ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 764.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 144.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 94 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 851.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=3, InterpolantAutomatonStates: 30, 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: 13.0ms SsaConstructionTime, 109.9ms SatisfiabilityAnalysisTime, 744.2ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...