/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/fork_multiple_times.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 18:54:05,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 18:54:05,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 18:54:05,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 18:54:05,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 18:54:05,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 18:54:05,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 18:54:05,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 18:54:05,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 18:54:05,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 18:54:05,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 18:54:05,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 18:54:05,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 18:54:05,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 18:54:05,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 18:54:05,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 18:54:05,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 18:54:05,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 18:54:05,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 18:54:05,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 18:54:05,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 18:54:05,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 18:54:05,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 18:54:05,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 18:54:05,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 18:54:05,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 18:54:05,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 18:54:05,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 18:54:05,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 18:54:05,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 18:54:05,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 18:54:05,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 18:54:05,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 18:54:05,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 18:54:05,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 18:54:05,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 18:54:05,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 18:54:05,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 18:54:05,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 18:54:05,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 18:54:05,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 18:54:05,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 18:54:05,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 18:54:05,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 18:54:05,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 18:54:05,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 18:54:05,269 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 18:54:05,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 18:54:05,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 18:54:05,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 18:54:05,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 18:54:05,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 18:54:05,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 18:54:05,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 18:54:05,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 18:54:05,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 18:54:05,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 18:54:05,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 18:54:05,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 18:54:05,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 18:54:05,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 18:54:05,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 18:54:05,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 18:54:05,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 18:54:05,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 18:54:05,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 18:54:05,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 18:54:05,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 18:54:05,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 18:54:05,273 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 18:54:05,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 18:54:05,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 18:54:05,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 18:54:05,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 18:54:05,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 18:54:05,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 18:54:05,617 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 18:54:05,618 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 18:54:05,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_multiple_times.bpl [2021-06-11 18:54:05,619 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_multiple_times.bpl' [2021-06-11 18:54:05,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 18:54:05,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 18:54:05,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 18:54:05,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 18:54:05,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 18:54:05,673 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 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,679 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 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 18:54:05,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 18:54:05,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 18:54:05,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 18:54:05,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/1) ... [2021-06-11 18:54:05,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 18:54:05,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 18:54:05,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 18:54:05,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 18:54:05,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 18:54:05,776 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-06-11 18:54:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-11 18:54:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-11 18:54:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 18:54:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 18:54:05,779 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 18:54:05,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 18:54:05,891 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 18:54:05,892 INFO L202 PluginConnector]: Adding new model fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:54:05 BoogieIcfgContainer [2021-06-11 18:54:05,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 18:54:05,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 18:54:05,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 18:54:05,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 18:54:05,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:54:05" (1/2) ... [2021-06-11 18:54:05,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d3e930 and model type fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:54:05, skipping insertion in model container [2021-06-11 18:54:05,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:54:05" (2/2) ... [2021-06-11 18:54:05,901 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_multiple_times.bpl [2021-06-11 18:54:05,909 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 18:54:05,913 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 18:54:05,913 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 18:54:05,935 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,935 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,936 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,936 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,936 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,936 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,939 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,946 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,952 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:54:05,974 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-06-11 18:54:05,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-11 18:54:06,008 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 18:54:06,008 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 18:54:06,009 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 18:54:06,009 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 18:54:06,009 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 18:54:06,009 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 18:54:06,009 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 18:54:06,009 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 18:54:06,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 22 transitions, 77 flow [2021-06-11 18:54:06,052 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-06-11 18:54:06,052 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:54:06,054 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. [2021-06-11 18:54:06,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 22 transitions, 77 flow [2021-06-11 18:54:06,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-11 18:54:06,058 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:54:06,071 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 0 places, 0 transitions, 0 flow [2021-06-11 18:54:06,077 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2021-06-11 18:54:06,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 18:54:06,078 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 18:54:06,078 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:54:06,078 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. [2021-06-11 18:54:06,079 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 18:54:06,080 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:54:06,080 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:54:06,082 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-06-11 18:54:06,091 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 18:54:06,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:54:06,094 INFO L202 PluginConnector]: Adding new model fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 06:54:06 BasicIcfg [2021-06-11 18:54:06,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 18:54:06,097 INFO L168 Benchmark]: Toolchain (without parser) took 434.62 ms. Allocated memory is still 385.9 MB. Free memory was 365.0 MB in the beginning and 366.9 MB in the end (delta: -1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:54:06,098 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 385.9 MB. Free memory was 366.0 MB in the beginning and 365.9 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:54:06,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.31 ms. Allocated memory is still 385.9 MB. Free memory was 364.9 MB in the beginning and 363.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:54:06,100 INFO L168 Benchmark]: Boogie Preprocessor took 13.07 ms. Allocated memory is still 385.9 MB. Free memory was 363.5 MB in the beginning and 362.6 MB in the end (delta: 835.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:54:06,100 INFO L168 Benchmark]: RCFGBuilder took 190.45 ms. Allocated memory is still 385.9 MB. Free memory was 362.6 MB in the beginning and 354.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-11 18:54:06,101 INFO L168 Benchmark]: TraceAbstraction took 199.07 ms. Allocated memory is still 385.9 MB. Free memory was 354.1 MB in the beginning and 366.9 MB in the end (delta: -12.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:54:06,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 385.9 MB. Free memory was 366.0 MB in the beginning and 365.9 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.31 ms. Allocated memory is still 385.9 MB. Free memory was 364.9 MB in the beginning and 363.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.07 ms. Allocated memory is still 385.9 MB. Free memory was 363.5 MB in the beginning and 362.6 MB in the end (delta: 835.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 190.45 ms. Allocated memory is still 385.9 MB. Free memory was 362.6 MB in the beginning and 354.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 199.07 ms. Allocated memory is still 385.9 MB. Free memory was 354.1 MB in the beginning and 366.9 MB in the end (delta: -12.8 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: 2.9ms, 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: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 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, Eliminated conditions: 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: 0.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 87.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 81.3ms, 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...