/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/sum_invariant.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 03:33:33,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 03:33:33,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 03:33:33,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 03:33:33,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 03:33:33,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 03:33:33,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 03:33:33,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 03:33:33,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 03:33:33,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 03:33:33,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 03:33:33,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 03:33:33,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 03:33:33,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 03:33:33,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 03:33:33,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 03:33:33,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 03:33:33,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 03:33:33,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 03:33:33,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 03:33:33,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 03:33:33,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 03:33:33,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 03:33:33,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 03:33:33,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 03:33:33,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 03:33:33,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 03:33:33,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 03:33:33,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 03:33:33,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 03:33:33,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 03:33:33,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 03:33:33,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 03:33:33,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 03:33:33,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 03:33:33,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 03:33:33,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 03:33:33,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 03:33:33,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 03:33:33,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 03:33:33,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 03:33:33,112 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 03:33:33,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 03:33:33,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 03:33:33,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 03:33:33,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 03:33:33,149 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 03:33:33,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 03:33:33,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 03:33:33,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 03:33:33,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 03:33:33,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 03:33:33,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 03:33:33,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 03:33:33,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 03:33:33,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 03:33:33,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 03:33:33,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 03:33:33,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 03:33:33,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 03:33:33,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 03:33:33,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 03:33:33,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 03:33:33,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:33:33,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 03:33:33,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 03:33:33,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 03:33:33,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 03:33:33,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 03:33:33,153 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 03:33:33,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 03:33:33,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 03:33:33,154 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 03:33:33,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 03:33:33,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 03:33:33,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 03:33:33,501 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 03:33:33,502 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 03:33:33,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-03-26 03:33:33,504 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-03-26 03:33:33,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 03:33:33,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 03:33:33,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 03:33:33,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 03:33:33,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 03:33:33,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 03:33:33,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 03:33:33,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 03:33:33,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 03:33:33,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... [2021-03-26 03:33:33,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 03:33:33,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 03:33:33,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 03:33:33,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 03:33:33,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 03:33:33,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 03:33:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 03:33:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 03:33:33,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-03-26 03:33:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-03-26 03:33:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-03-26 03:33:33,629 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 03:33:33,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 03:33:33,746 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 03:33:33,747 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:33:33 BoogieIcfgContainer [2021-03-26 03:33:33,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 03:33:33,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 03:33:33,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 03:33:33,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 03:33:33,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:33:33" (1/2) ... [2021-03-26 03:33:33,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61daa788 and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:33:33, skipping insertion in model container [2021-03-26 03:33:33,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:33:33" (2/2) ... [2021-03-26 03:33:33,766 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-03-26 03:33:33,772 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 03:33:33,775 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 03:33:33,776 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 03:33:33,801 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,802 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,803 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,803 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,804 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,805 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,806 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,806 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,807 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,807 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,808 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,808 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,809 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,810 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,811 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,811 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,811 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,811 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,812 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,812 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,812 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,812 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,813 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,813 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,817 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,833 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,835 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,837 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 03:33:33,881 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-03-26 03:33:33,911 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-26 03:33:33,945 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 03:33:33,945 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 03:33:33,945 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 03:33:33,945 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 03:33:33,945 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 03:33:33,945 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 03:33:33,945 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 03:33:33,945 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 03:33:33,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 156 flow [2021-03-26 03:33:34,016 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2021-03-26 03:33:34,016 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:33:34,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 56 events. 17/56 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2021-03-26 03:33:34,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 156 flow [2021-03-26 03:33:34,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 136 flow [2021-03-26 03:33:34,032 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:34,046 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 38 transitions, 136 flow [2021-03-26 03:33:34,052 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 38 transitions, 136 flow [2021-03-26 03:33:34,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 136 flow [2021-03-26 03:33:34,081 INFO L129 PetriNetUnfolder]: 17/54 cut-off events. [2021-03-26 03:33:34,081 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:33:34,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 54 events. 17/54 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2021-03-26 03:33:34,083 INFO L142 LiptonReduction]: Number of co-enabled transitions 528 [2021-03-26 03:33:34,544 INFO L154 LiptonReduction]: Checked pairs total: 225 [2021-03-26 03:33:34,544 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-26 03:33:34,546 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 515 [2021-03-26 03:33:34,567 INFO L129 PetriNetUnfolder]: 17/42 cut-off events. [2021-03-26 03:33:34,568 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 03:33:34,568 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:33:34,568 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:33:34,568 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:33:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:33:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1424014088, now seen corresponding path program 1 times [2021-03-26 03:33:34,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:33:34,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401478262] [2021-03-26 03:33:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:33:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:33:34,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:33:34,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:33:34,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:33:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:33:34,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401478262] [2021-03-26 03:33:34,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:33:34,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:33:34,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607872499] [2021-03-26 03:33:34,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:33:34,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:33:34,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:33:34,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:33:34,688 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 55 [2021-03-26 03:33:34,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:33:34,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 55 [2021-03-26 03:33:34,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:33:34,715 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-26 03:33:34,715 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-03-26 03:33:34,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 24 events. 5/24 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 7/31 useless extension candidates. Maximal degree in co-relation 29. Up to 6 conditions per place. [2021-03-26 03:33:34,717 INFO L132 encePairwiseOnDemand]: 51/55 looper letters, 1 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2021-03-26 03:33:34,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 88 flow [2021-03-26 03:33:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:33:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:33:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2021-03-26 03:33:34,726 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2021-03-26 03:33:34,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2021-03-26 03:33:34,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2021-03-26 03:33:34,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:33:34,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2021-03-26 03:33:34,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,736 INFO L185 Difference]: Start difference. First operand has 28 places, 27 transitions, 114 flow. Second operand 3 states and 155 transitions. [2021-03-26 03:33:34,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 88 flow [2021-03-26 03:33:34,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 60 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-26 03:33:34,740 INFO L241 Difference]: Finished difference. Result has 22 places, 21 transitions, 58 flow [2021-03-26 03:33:34,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2021-03-26 03:33:34,742 INFO L343 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2021-03-26 03:33:34,742 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:34,742 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 21 transitions, 58 flow [2021-03-26 03:33:34,743 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 21 transitions, 58 flow [2021-03-26 03:33:34,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 21 transitions, 58 flow [2021-03-26 03:33:34,747 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-26 03:33:34,747 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:34,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 5/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 19. Up to 6 conditions per place. [2021-03-26 03:33:34,748 INFO L142 LiptonReduction]: Number of co-enabled transitions 86 [2021-03-26 03:33:34,761 INFO L154 LiptonReduction]: Checked pairs total: 10 [2021-03-26 03:33:34,761 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 03:33:34,762 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-26 03:33:34,764 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 20 transitions, 56 flow [2021-03-26 03:33:34,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:33:34,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:33:34,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 03:33:34,765 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:33:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:33:34,766 INFO L82 PathProgramCache]: Analyzing trace with hash 112666674, now seen corresponding path program 1 times [2021-03-26 03:33:34,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:33:34,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583511482] [2021-03-26 03:33:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:33:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:33:34,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:33:34,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 03:33:34,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 03:33:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:33:34,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583511482] [2021-03-26 03:33:34,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:33:34,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 03:33:34,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95101040] [2021-03-26 03:33:34,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:33:34,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:33:34,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:33:34,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:33:34,811 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 56 [2021-03-26 03:33:34,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 20 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:33:34,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 56 [2021-03-26 03:33:34,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:33:34,818 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-26 03:33:34,818 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 03:33:34,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 16 events. 1/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2021-03-26 03:33:34,819 INFO L132 encePairwiseOnDemand]: 53/56 looper letters, 1 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2021-03-26 03:33:34,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 48 flow [2021-03-26 03:33:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:33:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:33:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2021-03-26 03:33:34,824 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9345238095238095 [2021-03-26 03:33:34,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2021-03-26 03:33:34,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2021-03-26 03:33:34,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:33:34,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2021-03-26 03:33:34,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,829 INFO L185 Difference]: Start difference. First operand has 21 places, 20 transitions, 56 flow. Second operand 3 states and 157 transitions. [2021-03-26 03:33:34,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 48 flow [2021-03-26 03:33:34,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 47 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:33:34,831 INFO L241 Difference]: Finished difference. Result has 22 places, 16 transitions, 45 flow [2021-03-26 03:33:34,831 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2021-03-26 03:33:34,832 INFO L343 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2021-03-26 03:33:34,832 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:34,832 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 16 transitions, 45 flow [2021-03-26 03:33:34,832 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 16 transitions, 45 flow [2021-03-26 03:33:34,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 16 transitions, 45 flow [2021-03-26 03:33:34,844 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-26 03:33:34,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:34,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 16 events. 1/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 12 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2021-03-26 03:33:34,844 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-26 03:33:34,845 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:33:34,845 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:33:34,845 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 03:33:34,846 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 45 flow [2021-03-26 03:33:34,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 03:33:34,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 03:33:34,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 03:33:34,849 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 03:33:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 03:33:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash -145536238, now seen corresponding path program 1 times [2021-03-26 03:33:34,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 03:33:34,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741111449] [2021-03-26 03:33:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 03:33:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 03:33:34,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:33:34,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:33:34,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:33:34,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 03:33:34,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 03:33:34,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-26 03:33:34,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 03:33:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 03:33:34,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741111449] [2021-03-26 03:33:34,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 03:33:34,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 03:33:34,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46624170] [2021-03-26 03:33:34,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 03:33:34,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 03:33:34,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 03:33:34,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 03:33:34,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 56 [2021-03-26 03:33:34,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 03:33:34,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 56 [2021-03-26 03:33:34,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 03:33:34,921 INFO L129 PetriNetUnfolder]: 20/55 cut-off events. [2021-03-26 03:33:34,921 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:34,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 55 events. 20/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 195 event pairs, 17 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 85. Up to 33 conditions per place. [2021-03-26 03:33:34,922 INFO L132 encePairwiseOnDemand]: 54/56 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2021-03-26 03:33:34,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 53 flow [2021-03-26 03:33:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 03:33:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 03:33:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2021-03-26 03:33:34,923 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.625 [2021-03-26 03:33:34,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2021-03-26 03:33:34,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2021-03-26 03:33:34,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 03:33:34,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2021-03-26 03:33:34,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,925 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 45 flow. Second operand 3 states and 105 transitions. [2021-03-26 03:33:34,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 53 flow [2021-03-26 03:33:34,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 52 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 03:33:34,925 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-03-26 03:33:34,926 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-03-26 03:33:34,926 INFO L343 CegarLoopForPetriNet]: 28 programPoint places, -6 predicate places. [2021-03-26 03:33:34,926 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 03:33:34,926 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-26 03:33:34,926 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-26 03:33:34,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 03:33:34,927 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 03:33:34,927 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 03:33:34,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 03:33:34,927 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 03:33:34,927 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 03:33:34,927 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 03:33:34,927 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 03:33:34,928 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 03:33:34,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 03:33:34,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 03:33:34,934 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 03:33:34 BasicIcfg [2021-03-26 03:33:34,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 03:33:34,935 INFO L168 Benchmark]: Toolchain (without parser) took 1401.76 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 236.9 MB in the beginning and 313.1 MB in the end (delta: -76.2 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.0 GB. [2021-03-26 03:33:34,939 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.44 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:33:34,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.23 ms. Allocated memory is still 255.9 MB. Free memory was 236.8 MB in the beginning and 235.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 03:33:34,940 INFO L168 Benchmark]: Boogie Preprocessor took 10.21 ms. Allocated memory is still 255.9 MB. Free memory was 235.4 MB in the beginning and 234.5 MB in the end (delta: 863.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 03:33:34,941 INFO L168 Benchmark]: RCFGBuilder took 178.73 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 226.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-26 03:33:34,941 INFO L168 Benchmark]: TraceAbstraction took 1184.97 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 225.6 MB in the beginning and 313.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.0 GB. [2021-03-26 03:33:34,944 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 0.44 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.23 ms. Allocated memory is still 255.9 MB. Free memory was 236.8 MB in the beginning and 235.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.21 ms. Allocated memory is still 255.9 MB. Free memory was 235.4 MB in the beginning and 234.5 MB in the end (delta: 863.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 178.73 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 226.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1184.97 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 225.6 MB in the beginning and 313.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 491.8ms, 39 PlacesBefore, 28 PlacesAfterwards, 38 TransitionsBefore, 27 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 225, positive: 225, positive conditional: 225, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 225, positive: 225, positive conditional: 0, positive unconditional: 225, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 225, positive: 225, positive conditional: 0, positive unconditional: 225, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 225, positive: 180, positive conditional: 0, positive unconditional: 180, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 260, positive: 260, positive conditional: 0, positive unconditional: 260, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 225, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 225, unknown conditional: 225, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.5ms, 22 PlacesBefore, 21 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 86 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 10 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10, unknown conditional: 10, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.9ms, 22 PlacesBefore, 22 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 22 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 987.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 96.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 611.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=0, InterpolantAutomatonStates: 9, 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: 6.3ms SsaConstructionTime, 26.9ms SatisfiabilityAnalysisTime, 98.5ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...