/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/fork_multiple_times.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:54:39,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:54:39,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:54:39,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:54:39,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:54:39,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:54:39,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:54:39,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:54:39,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:54:39,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:54:39,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:54:39,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:54:39,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:54:39,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:54:39,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:54:39,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:54:39,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:54:39,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:54:39,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:54:39,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:54:39,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:54:39,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:54:39,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:54:39,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:54:39,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 07:54:39,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 07:54:39,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 07:54:39,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 07:54:39,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 07:54:39,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 07:54:39,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:54:39,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:54:39,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:54:39,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:54:39,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:54:39,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:54:39,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:54:39,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:54:39,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:54:39,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:54:39,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:54:39,154 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-RepeatedVariableLbe.epf [2021-03-25 07:54:39,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:54:39,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:54:39,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:54:39,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:54:39,190 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:54:39,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:54:39,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:54:39,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:54:39,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:54:39,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:54:39,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:54:39,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:54:39,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:54:39,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:54:39,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:54:39,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:54:39,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:54:39,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:54:39,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:54:39,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:54:39,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:54:39,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:39,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:54:39,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:54:39,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:54:39,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:54:39,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:54:39,195 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:54:39,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:54:39,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:54:39,196 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:54:39,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:54:39,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:54:39,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:54:39,548 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 07:54:39,549 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 07:54:39,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_multiple_times.bpl [2021-03-25 07:54:39,550 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_multiple_times.bpl' [2021-03-25 07:54:39,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:54:39,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 07:54:39,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:39,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:54:39,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:54:39,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:54:39,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:54:39,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:54:39,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:54:39,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... [2021-03-25 07:54:39,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:54:39,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:54:39,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:54:39,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:54:39,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:54:39,688 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-03-25 07:54:39,689 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 07:54:39,690 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 07:54:39,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:54:39,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:54:39,691 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:54:39,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:54:39,809 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 07:54:39,811 INFO L202 PluginConnector]: Adding new model fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:39 BoogieIcfgContainer [2021-03-25 07:54:39,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:54:39,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:54:39,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:54:39,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:54:39,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:54:39" (1/2) ... [2021-03-25 07:54:39,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bef70d and model type fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:54:39, skipping insertion in model container [2021-03-25 07:54:39,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:54:39" (2/2) ... [2021-03-25 07:54:39,819 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_multiple_times.bpl [2021-03-25 07:54:39,839 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:54:39,842 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:54:39,842 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:54:39,870 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,871 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,871 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,872 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,873 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,874 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,876 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,883 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,889 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:54:39,916 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-03-25 07:54:39,932 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 07:54:39,967 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:54:39,967 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:54:39,969 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:54:39,969 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:54:39,969 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:54:39,969 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:54:39,969 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:54:39,969 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:54:39,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 22 transitions, 77 flow [2021-03-25 07:54:39,999 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-25 07:54:40,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:40,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 07:54:40,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 22 transitions, 77 flow [2021-03-25 07:54:40,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-03-25 07:54:40,005 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:54:40,013 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 0 places, 0 transitions, 0 flow [2021-03-25 07:54:40,017 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2021-03-25 07:54:40,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:54:40,018 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:54:40,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:40,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 07:54:40,019 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:54:40,019 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:54:40,019 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:54:40,021 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 07:54:40,027 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:54:40,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:54:40,030 INFO L202 PluginConnector]: Adding new model fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:54:40 BasicIcfg [2021-03-25 07:54:40,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:54:40,032 INFO L168 Benchmark]: Toolchain (without parser) took 447.34 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 231.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:40,033 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.50 ms. Allocated memory is still 255.9 MB. Free memory was 237.5 MB in the beginning and 237.3 MB in the end (delta: 160.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:40,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.35 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:40,036 INFO L168 Benchmark]: Boogie Preprocessor took 12.70 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 234.0 MB in the end (delta: 858.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:40,036 INFO L168 Benchmark]: RCFGBuilder took 188.84 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 226.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 07:54:40,037 INFO L168 Benchmark]: TraceAbstraction took 217.10 ms. Allocated memory is still 255.9 MB. Free memory was 225.7 MB in the beginning and 231.8 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:54:40,043 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 0.50 ms. Allocated memory is still 255.9 MB. Free memory was 237.5 MB in the beginning and 237.3 MB in the end (delta: 160.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.35 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.70 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 234.0 MB in the end (delta: 858.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 188.84 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 226.2 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 217.10 ms. Allocated memory is still 255.9 MB. Free memory was 225.7 MB in the beginning and 231.8 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4ms, 0 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: 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] , 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: 27]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 64.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 57.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 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...