/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 04:14:03,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 04:14:03,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 04:14:03,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 04:14:03,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 04:14:03,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 04:14:03,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 04:14:03,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 04:14:03,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 04:14:03,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 04:14:03,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 04:14:03,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 04:14:03,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 04:14:03,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 04:14:03,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 04:14:03,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 04:14:03,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 04:14:03,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 04:14:03,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 04:14:03,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 04:14:03,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 04:14:03,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 04:14:03,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 04:14:03,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 04:14:03,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 04:14:03,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 04:14:03,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 04:14:03,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 04:14:03,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 04:14:03,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 04:14:03,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 04:14:03,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 04:14:03,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 04:14:03,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 04:14:03,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 04:14:03,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 04:14:03,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-11 04:14:03,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 04:14:03,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 04:14:03,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 04:14:03,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 04:14:03,800 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 04:14:03,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 04:14:03,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 04:14:03,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 04:14:03,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 04:14:03,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 04:14:03,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 04:14:03,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 04:14:03,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 04:14:03,801 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 04:14:03,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 04:14:03,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 04:14:03,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 04:14:03,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 04:14:03,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 04:14:03,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 04:14:03,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 04:14:03,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 04:14:03,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 04:14:03,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 04:14:03,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 04:14:03,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 04:14:03,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 04:14:03,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 04:14:03,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 04:14:03,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 04:14:04,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 04:14:04,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 04:14:04,017 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 04:14:04,020 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 04:14:04,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl [2021-06-11 04:14:04,020 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl' [2021-06-11 04:14:04,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 04:14:04,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 04:14:04,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 04:14:04,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 04:14:04,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 04:14:04,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 04:14:04,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 04:14:04,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 04:14:04,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 04:14:04,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... [2021-06-11 04:14:04,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 04:14:04,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 04:14:04,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 04:14:04,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 04:14:04,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 04:14:04,143 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-11 04:14:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-11 04:14:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-11 04:14:04,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-11 04:14:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-11 04:14:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-11 04:14:04,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 04:14:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 04:14:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 04:14:04,146 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 04:14:04,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 04:14:04,267 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 04:14:04,268 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 04:14:04 BoogieIcfgContainer [2021-06-11 04:14:04,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 04:14:04,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 04:14:04,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 04:14:04,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 04:14:04,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 04:14:04" (1/2) ... [2021-06-11 04:14:04,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305d7345 and model type easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 04:14:04, skipping insertion in model container [2021-06-11 04:14:04,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 04:14:04" (2/2) ... [2021-06-11 04:14:04,273 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.bpl [2021-06-11 04:14:04,293 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 04:14:04,296 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 04:14:04,296 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 04:14:04,337 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-11 04:14:04,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-11 04:14:04,363 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 04:14:04,364 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 04:14:04,364 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 04:14:04,364 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 04:14:04,364 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 04:14:04,364 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 04:14:04,364 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 04:14:04,364 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 04:14:04,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 86 flow [2021-06-11 04:14:04,399 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2021-06-11 04:14:04,399 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 04:14:04,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 0/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 04:14:04,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 86 flow [2021-06-11 04:14:04,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 74 flow [2021-06-11 04:14:04,404 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 04:14:04,420 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 31 transitions, 74 flow [2021-06-11 04:14:04,425 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 31 transitions, 74 flow [2021-06-11 04:14:04,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 74 flow [2021-06-11 04:14:04,443 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-06-11 04:14:04,444 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 04:14:04,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 0/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 04:14:04,445 INFO L151 LiptonReduction]: Number of co-enabled transitions 240 [2021-06-11 04:14:04,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:04,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:04,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:04,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:04,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:04,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:04,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:04,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:04,784 INFO L163 LiptonReduction]: Checked pairs total: 950 [2021-06-11 04:14:04,784 INFO L165 LiptonReduction]: Total number of compositions: 11 [2021-06-11 04:14:04,788 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 385 [2021-06-11 04:14:04,810 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-06-11 04:14:04,810 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 04:14:04,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:04,811 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:04,811 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:04,816 INFO L82 PathProgramCache]: Analyzing trace with hash -2079490501, now seen corresponding path program 1 times [2021-06-11 04:14:04,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:04,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595119779] [2021-06-11 04:14:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:04,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:04,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:04,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:04,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:04,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:04,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-11 04:14:04,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:04,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595119779] [2021-06-11 04:14:04,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:04,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-11 04:14:04,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946407628] [2021-06-11 04:14:04,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-11 04:14:04,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:04,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-11 04:14:04,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-11 04:14:04,984 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 46 [2021-06-11 04:14:04,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:04,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:04,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 46 [2021-06-11 04:14:04,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:05,061 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2021-06-11 04:14:05,061 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-06-11 04:14:05,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 44 events. 1/44 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 52. Up to 5 conditions per place. [2021-06-11 04:14:05,063 INFO L132 encePairwiseOnDemand]: 40/46 looper letters, 7 selfloop transitions, 7 changer transitions 2/30 dead transitions. [2021-06-11 04:14:05,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 104 flow [2021-06-11 04:14:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-11 04:14:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-11 04:14:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2021-06-11 04:14:05,070 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8070652173913043 [2021-06-11 04:14:05,071 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 297 transitions. [2021-06-11 04:14:05,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 297 transitions. [2021-06-11 04:14:05,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:05,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 297 transitions. [2021-06-11 04:14:05,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.125) internal successors, (297), 8 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,079 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,080 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 52 flow. Second operand 8 states and 297 transitions. [2021-06-11 04:14:05,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 104 flow [2021-06-11 04:14:05,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 96 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-11 04:14:05,083 INFO L241 Difference]: Finished difference. Result has 33 places, 25 transitions, 82 flow [2021-06-11 04:14:05,084 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2021-06-11 04:14:05,084 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-06-11 04:14:05,085 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 82 flow [2021-06-11 04:14:05,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,085 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:05,085 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:05,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 04:14:05,085 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:05,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:05,086 INFO L82 PathProgramCache]: Analyzing trace with hash -801228583, now seen corresponding path program 2 times [2021-06-11 04:14:05,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:05,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99764705] [2021-06-11 04:14:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:05,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,140 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-11 04:14:05,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:05,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99764705] [2021-06-11 04:14:05,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:05,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-11 04:14:05,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723780520] [2021-06-11 04:14:05,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-11 04:14:05,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:05,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-11 04:14:05,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-11 04:14:05,153 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 46 [2021-06-11 04:14:05,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:05,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 46 [2021-06-11 04:14:05,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:05,227 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2021-06-11 04:14:05,227 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-06-11 04:14:05,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 38 events. 1/38 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 68. Up to 5 conditions per place. [2021-06-11 04:14:05,228 INFO L132 encePairwiseOnDemand]: 40/46 looper letters, 4 selfloop transitions, 6 changer transitions 4/28 dead transitions. [2021-06-11 04:14:05,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 124 flow [2021-06-11 04:14:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-11 04:14:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-11 04:14:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2021-06-11 04:14:05,230 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7989130434782609 [2021-06-11 04:14:05,230 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 294 transitions. [2021-06-11 04:14:05,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 294 transitions. [2021-06-11 04:14:05,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:05,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 294 transitions. [2021-06-11 04:14:05,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,232 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,232 INFO L185 Difference]: Start difference. First operand has 33 places, 25 transitions, 82 flow. Second operand 8 states and 294 transitions. [2021-06-11 04:14:05,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 124 flow [2021-06-11 04:14:05,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 120 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-06-11 04:14:05,234 INFO L241 Difference]: Finished difference. Result has 38 places, 22 transitions, 81 flow [2021-06-11 04:14:05,234 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=81, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2021-06-11 04:14:05,234 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-06-11 04:14:05,234 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 81 flow [2021-06-11 04:14:05,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,235 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:05,235 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:05,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 04:14:05,235 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2039732805, now seen corresponding path program 3 times [2021-06-11 04:14:05,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:05,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971500883] [2021-06-11 04:14:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:05,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:14:05,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:14:05,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:14:05,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 04:14:05,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:05,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971500883] [2021-06-11 04:14:05,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:05,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-11 04:14:05,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917825884] [2021-06-11 04:14:05,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-11 04:14:05,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:05,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-11 04:14:05,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-11 04:14:05,276 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:05,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 81 flow. Second operand has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:05,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:05,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:05,377 INFO L129 PetriNetUnfolder]: 17/109 cut-off events. [2021-06-11 04:14:05,378 INFO L130 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2021-06-11 04:14:05,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 109 events. 17/109 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 446 event pairs, 3 based on Foata normal form. 2/110 useless extension candidates. Maximal degree in co-relation 215. Up to 14 conditions per place. [2021-06-11 04:14:05,380 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 14 selfloop transitions, 13 changer transitions 4/44 dead transitions. [2021-06-11 04:14:05,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 187 flow [2021-06-11 04:14:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 04:14:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 04:14:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-06-11 04:14:05,382 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6642512077294686 [2021-06-11 04:14:05,382 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-06-11 04:14:05,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-06-11 04:14:05,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:05,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-06-11 04:14:05,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,385 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,385 INFO L185 Difference]: Start difference. First operand has 38 places, 22 transitions, 81 flow. Second operand 9 states and 275 transitions. [2021-06-11 04:14:05,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 187 flow [2021-06-11 04:14:05,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 164 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-06-11 04:14:05,389 INFO L241 Difference]: Finished difference. Result has 38 places, 34 transitions, 140 flow [2021-06-11 04:14:05,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=140, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2021-06-11 04:14:05,390 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-06-11 04:14:05,390 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 140 flow [2021-06-11 04:14:05,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,390 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:05,390 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:05,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 04:14:05,391 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:05,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:05,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1510531027, now seen corresponding path program 4 times [2021-06-11 04:14:05,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:05,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141819324] [2021-06-11 04:14:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:05,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:05,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141819324] [2021-06-11 04:14:05,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:05,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 04:14:05,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242482732] [2021-06-11 04:14:05,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 04:14:05,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:05,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 04:14:05,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 04:14:05,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 46 [2021-06-11 04:14:05,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:05,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 46 [2021-06-11 04:14:05,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:05,435 INFO L129 PetriNetUnfolder]: 3/65 cut-off events. [2021-06-11 04:14:05,435 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-06-11 04:14:05,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 65 events. 3/65 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 217 event pairs, 0 based on Foata normal form. 1/65 useless extension candidates. Maximal degree in co-relation 76. Up to 9 conditions per place. [2021-06-11 04:14:05,436 INFO L132 encePairwiseOnDemand]: 43/46 looper letters, 2 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2021-06-11 04:14:05,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 137 flow [2021-06-11 04:14:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 04:14:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 04:14:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2021-06-11 04:14:05,440 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8405797101449275 [2021-06-11 04:14:05,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2021-06-11 04:14:05,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2021-06-11 04:14:05,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:05,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2021-06-11 04:14:05,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,441 INFO L185 Difference]: Start difference. First operand has 38 places, 34 transitions, 140 flow. Second operand 3 states and 116 transitions. [2021-06-11 04:14:05,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 137 flow [2021-06-11 04:14:05,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 133 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-06-11 04:14:05,443 INFO L241 Difference]: Finished difference. Result has 38 places, 31 transitions, 135 flow [2021-06-11 04:14:05,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2021-06-11 04:14:05,443 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-06-11 04:14:05,443 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 135 flow [2021-06-11 04:14:05,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,444 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:05,444 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:05,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 04:14:05,444 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:05,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:05,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1556509101, now seen corresponding path program 5 times [2021-06-11 04:14:05,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:05,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356322778] [2021-06-11 04:14:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:05,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:05,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356322778] [2021-06-11 04:14:05,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:05,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-11 04:14:05,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800857853] [2021-06-11 04:14:05,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-11 04:14:05,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:05,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-11 04:14:05,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-11 04:14:05,523 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:05,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 135 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:05,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:05,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:05,638 INFO L129 PetriNetUnfolder]: 21/150 cut-off events. [2021-06-11 04:14:05,638 INFO L130 PetriNetUnfolder]: For 94/98 co-relation queries the response was YES. [2021-06-11 04:14:05,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 150 events. 21/150 cut-off events. For 94/98 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 724 event pairs, 0 based on Foata normal form. 1/150 useless extension candidates. Maximal degree in co-relation 143. Up to 23 conditions per place. [2021-06-11 04:14:05,640 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 21 selfloop transitions, 17 changer transitions 2/53 dead transitions. [2021-06-11 04:14:05,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 317 flow [2021-06-11 04:14:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 04:14:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 04:14:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2021-06-11 04:14:05,641 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6618357487922706 [2021-06-11 04:14:05,641 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 274 transitions. [2021-06-11 04:14:05,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 274 transitions. [2021-06-11 04:14:05,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:05,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 274 transitions. [2021-06-11 04:14:05,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,643 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,643 INFO L185 Difference]: Start difference. First operand has 38 places, 31 transitions, 135 flow. Second operand 9 states and 274 transitions. [2021-06-11 04:14:05,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 317 flow [2021-06-11 04:14:05,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 305 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 04:14:05,646 INFO L241 Difference]: Finished difference. Result has 49 places, 41 transitions, 247 flow [2021-06-11 04:14:05,646 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=247, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2021-06-11 04:14:05,646 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2021-06-11 04:14:05,646 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 247 flow [2021-06-11 04:14:05,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:05,647 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:05,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 04:14:05,647 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1709029047, now seen corresponding path program 6 times [2021-06-11 04:14:05,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:05,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893553224] [2021-06-11 04:14:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:05,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:05,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893553224] [2021-06-11 04:14:05,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:05,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-11 04:14:05,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273304862] [2021-06-11 04:14:05,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-11 04:14:05,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:05,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-11 04:14:05,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-11 04:14:05,742 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:05,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:05,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:05,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:05,864 INFO L129 PetriNetUnfolder]: 24/160 cut-off events. [2021-06-11 04:14:05,864 INFO L130 PetriNetUnfolder]: For 273/275 co-relation queries the response was YES. [2021-06-11 04:14:05,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 160 events. 24/160 cut-off events. For 273/275 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 803 event pairs, 7 based on Foata normal form. 3/162 useless extension candidates. Maximal degree in co-relation 214. Up to 25 conditions per place. [2021-06-11 04:14:05,865 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 23 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2021-06-11 04:14:05,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 403 flow [2021-06-11 04:14:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 04:14:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 04:14:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-06-11 04:14:05,866 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-06-11 04:14:05,866 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-06-11 04:14:05,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-06-11 04:14:05,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:05,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-06-11 04:14:05,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,868 INFO L185 Difference]: Start difference. First operand has 49 places, 41 transitions, 247 flow. Second operand 9 states and 276 transitions. [2021-06-11 04:14:05,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 403 flow [2021-06-11 04:14:05,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 393 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-06-11 04:14:05,870 INFO L241 Difference]: Finished difference. Result has 57 places, 47 transitions, 333 flow [2021-06-11 04:14:05,870 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2021-06-11 04:14:05,870 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2021-06-11 04:14:05,870 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 333 flow [2021-06-11 04:14:05,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:05,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:05,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 04:14:05,871 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:05,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:05,871 INFO L82 PathProgramCache]: Analyzing trace with hash -681228729, now seen corresponding path program 7 times [2021-06-11 04:14:05,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:05,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848458657] [2021-06-11 04:14:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:05,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:05,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848458657] [2021-06-11 04:14:05,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:05,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 04:14:05,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016619107] [2021-06-11 04:14:05,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 04:14:05,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:05,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 04:14:05,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 04:14:05,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 46 [2021-06-11 04:14:05,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:05,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 46 [2021-06-11 04:14:05,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:05,891 INFO L129 PetriNetUnfolder]: 13/127 cut-off events. [2021-06-11 04:14:05,891 INFO L130 PetriNetUnfolder]: For 199/200 co-relation queries the response was YES. [2021-06-11 04:14:05,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 127 events. 13/127 cut-off events. For 199/200 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 631 event pairs, 1 based on Foata normal form. 4/131 useless extension candidates. Maximal degree in co-relation 243. Up to 18 conditions per place. [2021-06-11 04:14:05,892 INFO L132 encePairwiseOnDemand]: 43/46 looper letters, 2 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2021-06-11 04:14:05,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 342 flow [2021-06-11 04:14:05,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 04:14:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 04:14:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-06-11 04:14:05,892 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2021-06-11 04:14:05,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-06-11 04:14:05,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-06-11 04:14:05,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:05,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-06-11 04:14:05,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,893 INFO L185 Difference]: Start difference. First operand has 57 places, 47 transitions, 333 flow. Second operand 3 states and 113 transitions. [2021-06-11 04:14:05,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 46 transitions, 342 flow [2021-06-11 04:14:05,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 318 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-06-11 04:14:05,895 INFO L241 Difference]: Finished difference. Result has 57 places, 46 transitions, 324 flow [2021-06-11 04:14:05,895 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2021-06-11 04:14:05,896 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2021-06-11 04:14:05,896 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 324 flow [2021-06-11 04:14:05,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,896 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:05,896 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:05,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 04:14:05,896 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:05,896 INFO L82 PathProgramCache]: Analyzing trace with hash -2111591163, now seen corresponding path program 8 times [2021-06-11 04:14:05,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:05,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001823842] [2021-06-11 04:14:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:05,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,933 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-06-11 04:14:05,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:05,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:05,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:05,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001823842] [2021-06-11 04:14:05,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:05,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-11 04:14:05,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196236770] [2021-06-11 04:14:05,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-11 04:14:05,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:05,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-11 04:14:05,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-11 04:14:05,943 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:05,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:05,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:05,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:05,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:06,038 INFO L129 PetriNetUnfolder]: 16/135 cut-off events. [2021-06-11 04:14:06,038 INFO L130 PetriNetUnfolder]: For 325/329 co-relation queries the response was YES. [2021-06-11 04:14:06,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 135 events. 16/135 cut-off events. For 325/329 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 635 event pairs, 7 based on Foata normal form. 3/138 useless extension candidates. Maximal degree in co-relation 328. Up to 22 conditions per place. [2021-06-11 04:14:06,039 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 21 selfloop transitions, 11 changer transitions 4/49 dead transitions. [2021-06-11 04:14:06,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 49 transitions, 413 flow [2021-06-11 04:14:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 04:14:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 04:14:06,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 273 transitions. [2021-06-11 04:14:06,040 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6594202898550725 [2021-06-11 04:14:06,040 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 273 transitions. [2021-06-11 04:14:06,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 273 transitions. [2021-06-11 04:14:06,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:06,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 273 transitions. [2021-06-11 04:14:06,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.333333333333332) internal successors, (273), 9 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,041 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,041 INFO L185 Difference]: Start difference. First operand has 57 places, 46 transitions, 324 flow. Second operand 9 states and 273 transitions. [2021-06-11 04:14:06,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 49 transitions, 413 flow [2021-06-11 04:14:06,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 49 transitions, 393 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-11 04:14:06,043 INFO L241 Difference]: Finished difference. Result has 64 places, 41 transitions, 285 flow [2021-06-11 04:14:06,043 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2021-06-11 04:14:06,043 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2021-06-11 04:14:06,044 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 285 flow [2021-06-11 04:14:06,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,044 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:06,044 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:06,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 04:14:06,044 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:06,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:06,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1076241617, now seen corresponding path program 9 times [2021-06-11 04:14:06,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:06,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110934169] [2021-06-11 04:14:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:06,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 04:14:06,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:06,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110934169] [2021-06-11 04:14:06,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:06,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-11 04:14:06,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013979798] [2021-06-11 04:14:06,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-11 04:14:06,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:06,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-11 04:14:06,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-11 04:14:06,085 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:06,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 285 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:06,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:06,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:06,173 INFO L129 PetriNetUnfolder]: 15/126 cut-off events. [2021-06-11 04:14:06,173 INFO L130 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2021-06-11 04:14:06,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 126 events. 15/126 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 574 event pairs, 6 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 335. Up to 22 conditions per place. [2021-06-11 04:14:06,174 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 18 selfloop transitions, 15 changer transitions 0/46 dead transitions. [2021-06-11 04:14:06,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 46 transitions, 384 flow [2021-06-11 04:14:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 04:14:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 04:14:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 271 transitions. [2021-06-11 04:14:06,177 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6545893719806763 [2021-06-11 04:14:06,177 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 271 transitions. [2021-06-11 04:14:06,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 271 transitions. [2021-06-11 04:14:06,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:06,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 271 transitions. [2021-06-11 04:14:06,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.11111111111111) internal successors, (271), 9 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,181 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,181 INFO L185 Difference]: Start difference. First operand has 64 places, 41 transitions, 285 flow. Second operand 9 states and 271 transitions. [2021-06-11 04:14:06,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 46 transitions, 384 flow [2021-06-11 04:14:06,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 356 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-06-11 04:14:06,184 INFO L241 Difference]: Finished difference. Result has 62 places, 44 transitions, 323 flow [2021-06-11 04:14:06,184 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2021-06-11 04:14:06,185 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 35 predicate places. [2021-06-11 04:14:06,185 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 323 flow [2021-06-11 04:14:06,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:06,185 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:06,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 04:14:06,185 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:06,185 INFO L82 PathProgramCache]: Analyzing trace with hash -769414925, now seen corresponding path program 10 times [2021-06-11 04:14:06,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:06,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791482837] [2021-06-11 04:14:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:06,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,232 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-06-11 04:14:06,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 04:14:06,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:06,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791482837] [2021-06-11 04:14:06,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:06,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-11 04:14:06,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728506098] [2021-06-11 04:14:06,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-11 04:14:06,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:06,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-11 04:14:06,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-11 04:14:06,244 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:06,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 323 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:06,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:06,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:06,343 INFO L129 PetriNetUnfolder]: 13/104 cut-off events. [2021-06-11 04:14:06,344 INFO L130 PetriNetUnfolder]: For 273/277 co-relation queries the response was YES. [2021-06-11 04:14:06,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 104 events. 13/104 cut-off events. For 273/277 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 414 event pairs, 6 based on Foata normal form. 2/106 useless extension candidates. Maximal degree in co-relation 324. Up to 22 conditions per place. [2021-06-11 04:14:06,344 INFO L132 encePairwiseOnDemand]: 39/46 looper letters, 16 selfloop transitions, 7 changer transitions 6/42 dead transitions. [2021-06-11 04:14:06,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 42 transitions, 353 flow [2021-06-11 04:14:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-11 04:14:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-11 04:14:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 267 transitions. [2021-06-11 04:14:06,346 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.644927536231884 [2021-06-11 04:14:06,346 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 267 transitions. [2021-06-11 04:14:06,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 267 transitions. [2021-06-11 04:14:06,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:06,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 267 transitions. [2021-06-11 04:14:06,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,348 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,348 INFO L185 Difference]: Start difference. First operand has 62 places, 44 transitions, 323 flow. Second operand 9 states and 267 transitions. [2021-06-11 04:14:06,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 42 transitions, 353 flow [2021-06-11 04:14:06,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 42 transitions, 324 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-06-11 04:14:06,349 INFO L241 Difference]: Finished difference. Result has 63 places, 34 transitions, 213 flow [2021-06-11 04:14:06,349 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=63, PETRI_TRANSITIONS=34} [2021-06-11 04:14:06,349 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 36 predicate places. [2021-06-11 04:14:06,350 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 34 transitions, 213 flow [2021-06-11 04:14:06,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,350 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:06,350 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:06,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 04:14:06,350 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:06,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1735238145, now seen corresponding path program 11 times [2021-06-11 04:14:06,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:06,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35885590] [2021-06-11 04:14:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:06,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,382 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-06-11 04:14:06,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:06,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35885590] [2021-06-11 04:14:06,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:06,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-11 04:14:06,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752322699] [2021-06-11 04:14:06,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-11 04:14:06,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:06,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-11 04:14:06,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-11 04:14:06,390 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:06,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 34 transitions, 213 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:06,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:06,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:06,485 INFO L129 PetriNetUnfolder]: 9/84 cut-off events. [2021-06-11 04:14:06,486 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2021-06-11 04:14:06,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 84 events. 9/84 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 297 event pairs, 2 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 259. Up to 18 conditions per place. [2021-06-11 04:14:06,486 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 11 selfloop transitions, 8 changer transitions 4/36 dead transitions. [2021-06-11 04:14:06,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 36 transitions, 268 flow [2021-06-11 04:14:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-11 04:14:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-11 04:14:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2021-06-11 04:14:06,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6331521739130435 [2021-06-11 04:14:06,487 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 233 transitions. [2021-06-11 04:14:06,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 233 transitions. [2021-06-11 04:14:06,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:06,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 233 transitions. [2021-06-11 04:14:06,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,488 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,489 INFO L185 Difference]: Start difference. First operand has 63 places, 34 transitions, 213 flow. Second operand 8 states and 233 transitions. [2021-06-11 04:14:06,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 36 transitions, 268 flow [2021-06-11 04:14:06,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 215 flow, removed 6 selfloop flow, removed 11 redundant places. [2021-06-11 04:14:06,490 INFO L241 Difference]: Finished difference. Result has 51 places, 29 transitions, 144 flow [2021-06-11 04:14:06,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=29} [2021-06-11 04:14:06,490 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2021-06-11 04:14:06,490 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 29 transitions, 144 flow [2021-06-11 04:14:06,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,490 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:06,490 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:06,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 04:14:06,490 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:06,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:06,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1676279835, now seen corresponding path program 12 times [2021-06-11 04:14:06,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:06,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164008490] [2021-06-11 04:14:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:06,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 04:14:06,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:06,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164008490] [2021-06-11 04:14:06,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:06,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-11 04:14:06,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480687748] [2021-06-11 04:14:06,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-11 04:14:06,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:06,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-11 04:14:06,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-11 04:14:06,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:06,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 29 transitions, 144 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:06,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:06,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:06,615 INFO L129 PetriNetUnfolder]: 8/77 cut-off events. [2021-06-11 04:14:06,615 INFO L130 PetriNetUnfolder]: For 116/118 co-relation queries the response was YES. [2021-06-11 04:14:06,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 77 events. 8/77 cut-off events. For 116/118 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 250 event pairs, 3 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 213. Up to 27 conditions per place. [2021-06-11 04:14:06,616 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 9 selfloop transitions, 10 changer transitions 0/32 dead transitions. [2021-06-11 04:14:06,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 32 transitions, 202 flow [2021-06-11 04:14:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-11 04:14:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-11 04:14:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2021-06-11 04:14:06,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2021-06-11 04:14:06,617 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 234 transitions. [2021-06-11 04:14:06,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 234 transitions. [2021-06-11 04:14:06,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:06,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 234 transitions. [2021-06-11 04:14:06,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 29.25) internal successors, (234), 8 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,620 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,620 INFO L185 Difference]: Start difference. First operand has 51 places, 29 transitions, 144 flow. Second operand 8 states and 234 transitions. [2021-06-11 04:14:06,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 32 transitions, 202 flow [2021-06-11 04:14:06,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 160 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-06-11 04:14:06,621 INFO L241 Difference]: Finished difference. Result has 46 places, 31 transitions, 151 flow [2021-06-11 04:14:06,621 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=151, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2021-06-11 04:14:06,621 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2021-06-11 04:14:06,621 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 151 flow [2021-06-11 04:14:06,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,621 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:06,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:06,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 04:14:06,621 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1731658439, now seen corresponding path program 13 times [2021-06-11 04:14:06,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:06,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844502781] [2021-06-11 04:14:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:06,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,673 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-06-11 04:14:06,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 04:14:06,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:06,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844502781] [2021-06-11 04:14:06,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:06,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-11 04:14:06,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002344444] [2021-06-11 04:14:06,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-11 04:14:06,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:06,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-11 04:14:06,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-11 04:14:06,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:06,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 151 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:06,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:06,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:06,760 INFO L129 PetriNetUnfolder]: 6/52 cut-off events. [2021-06-11 04:14:06,760 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-06-11 04:14:06,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 52 events. 6/52 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 3 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 133. Up to 20 conditions per place. [2021-06-11 04:14:06,761 INFO L132 encePairwiseOnDemand]: 39/46 looper letters, 7 selfloop transitions, 3 changer transitions 5/28 dead transitions. [2021-06-11 04:14:06,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 28 transitions, 157 flow [2021-06-11 04:14:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-11 04:14:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-11 04:14:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2021-06-11 04:14:06,762 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6277173913043478 [2021-06-11 04:14:06,762 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 231 transitions. [2021-06-11 04:14:06,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 231 transitions. [2021-06-11 04:14:06,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:06,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 231 transitions. [2021-06-11 04:14:06,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.875) internal successors, (231), 8 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,763 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,763 INFO L185 Difference]: Start difference. First operand has 46 places, 31 transitions, 151 flow. Second operand 8 states and 231 transitions. [2021-06-11 04:14:06,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 28 transitions, 157 flow [2021-06-11 04:14:06,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 28 transitions, 143 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-06-11 04:14:06,764 INFO L241 Difference]: Finished difference. Result has 47 places, 22 transitions, 84 flow [2021-06-11 04:14:06,764 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=84, PETRI_PLACES=47, PETRI_TRANSITIONS=22} [2021-06-11 04:14:06,764 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2021-06-11 04:14:06,764 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 22 transitions, 84 flow [2021-06-11 04:14:06,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 04:14:06,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 04:14:06,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 04:14:06,764 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 04:14:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 04:14:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash 817557819, now seen corresponding path program 14 times [2021-06-11 04:14:06,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 04:14:06,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517254011] [2021-06-11 04:14:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 04:14:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 04:14:06,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:14:06,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:14:06,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 04:14:06,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 04:14:06,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 04:14:06,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 04:14:06,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 04:14:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 04:14:06,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517254011] [2021-06-11 04:14:06,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 04:14:06,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-11 04:14:06,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860994644] [2021-06-11 04:14:06,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-11 04:14:06,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 04:14:06,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-11 04:14:06,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-11 04:14:06,792 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2021-06-11 04:14:06,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 22 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 04:14:06,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2021-06-11 04:14:06,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 04:14:06,834 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2021-06-11 04:14:06,834 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-06-11 04:14:06,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 19 events. 3/19 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 1 based on Foata normal form. 2/21 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2021-06-11 04:14:06,834 INFO L132 encePairwiseOnDemand]: 40/46 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-06-11 04:14:06,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 13 transitions, 70 flow [2021-06-11 04:14:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-11 04:14:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-11 04:14:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2021-06-11 04:14:06,835 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6149068322981367 [2021-06-11 04:14:06,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 198 transitions. [2021-06-11 04:14:06,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 198 transitions. [2021-06-11 04:14:06,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 04:14:06,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 198 transitions. [2021-06-11 04:14:06,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,836 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,836 INFO L185 Difference]: Start difference. First operand has 47 places, 22 transitions, 84 flow. Second operand 7 states and 198 transitions. [2021-06-11 04:14:06,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 13 transitions, 70 flow [2021-06-11 04:14:06,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 13 transitions, 53 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-06-11 04:14:06,837 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2021-06-11 04:14:06,837 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2021-06-11 04:14:06,837 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2021-06-11 04:14:06,837 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2021-06-11 04:14:06,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 04:14:06,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 04:14:06,840 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 04:14:06 BasicIcfg [2021-06-11 04:14:06,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 04:14:06,840 INFO L168 Benchmark]: Toolchain (without parser) took 2776.32 ms. Allocated memory is still 337.6 MB. Free memory was 317.6 MB in the beginning and 228.3 MB in the end (delta: 89.3 MB). Peak memory consumption was 91.7 MB. Max. memory is 16.0 GB. [2021-06-11 04:14:06,840 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 337.6 MB. Free memory was 318.7 MB in the beginning and 318.6 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 04:14:06,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.08 ms. Allocated memory is still 337.6 MB. Free memory was 317.5 MB in the beginning and 316.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 04:14:06,841 INFO L168 Benchmark]: Boogie Preprocessor took 11.58 ms. Allocated memory is still 337.6 MB. Free memory was 316.1 MB in the beginning and 315.2 MB in the end (delta: 893.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 04:14:06,841 INFO L168 Benchmark]: RCFGBuilder took 171.32 ms. Allocated memory is still 337.6 MB. Free memory was 315.1 MB in the beginning and 303.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-11 04:14:06,841 INFO L168 Benchmark]: TraceAbstraction took 2570.37 ms. Allocated memory is still 337.6 MB. Free memory was 303.4 MB in the beginning and 228.3 MB in the end (delta: 75.2 MB). Peak memory consumption was 77.0 MB. Max. memory is 16.0 GB. [2021-06-11 04:14:06,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 337.6 MB. Free memory was 318.7 MB in the beginning and 318.6 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.08 ms. Allocated memory is still 337.6 MB. Free memory was 317.5 MB in the beginning and 316.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.58 ms. Allocated memory is still 337.6 MB. Free memory was 316.1 MB in the beginning and 315.2 MB in the end (delta: 893.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 171.32 ms. Allocated memory is still 337.6 MB. Free memory was 315.1 MB in the beginning and 303.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2570.37 ms. Allocated memory is still 337.6 MB. Free memory was 303.4 MB in the beginning and 228.3 MB in the end (delta: 75.2 MB). Peak memory consumption was 77.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 359.2ms, 38 PlacesBefore, 27 PlacesAfterwards, 31 TransitionsBefore, 20 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 4 FixpointIterations, 5 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 950 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 493, positive: 393, positive conditional: 0, positive unconditional: 393, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 211, positive: 176, positive conditional: 0, positive unconditional: 176, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 211, positive: 176, positive conditional: 0, positive unconditional: 176, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 211, positive: 169, positive conditional: 0, positive unconditional: 169, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 141, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 122, negative conditional: 0, negative unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 493, positive: 217, positive conditional: 0, positive unconditional: 217, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 211, unknown conditional: 0, unknown unconditional: 211] , Statistics on independence cache: Total cache size (in pairs): 291, Positive cache size: 256, Positive conditional cache size: 0, Positive unconditional cache size: 256, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35 - PositiveResult [Line: 60]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2476.7ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1207.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 436.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 233 SDslu, 79 SDs, 0 SdLazy, 568 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 306.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 840.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=333occurred in iteration=6, InterpolantAutomatonStates: 107, 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: 29.2ms SsaConstructionTime, 80.8ms SatisfiabilityAnalysisTime, 576.8ms InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 1070 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...