/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:21:15,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:21:15,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:21:15,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 08:21:15,978 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-NoLbe.epf [2021-06-13 08:21:16,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:21:16,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:21:16,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:21:16,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:21:16,012 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:21:16,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:21:16,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:21:16,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:21:16,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:21:16,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:21:16,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:21:16,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:21:16,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:21:16,014 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:21:16,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:21:16,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:21:16,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:21:16,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:21:16,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:21:16,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:21:16,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:21:16,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:21:16,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:21:16,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:21:16,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:21:16,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:21:16,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:21:16,016 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:21:16,016 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:21:16,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:21:16,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:21:16,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:21:16,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:21:16,364 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 08:21:16,365 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 08:21:16,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure02.bpl [2021-06-13 08:21:16,366 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure02.bpl' [2021-06-13 08:21:16,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:21:16,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 08:21:16,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:21:16,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:21:16,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:21:16,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:21:16,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:21:16,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:21:16,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:21:16,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/1) ... [2021-06-13 08:21:16,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:21:16,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:21:16,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:21:16,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:21:16,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (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 [2021-06-13 08:21:16,507 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2021-06-13 08:21:16,507 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-06-13 08:21:16,508 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-06-13 08:21:16,508 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-06-13 08:21:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-13 08:21:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-13 08:21:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-06-13 08:21:16,509 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 08:21:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:21:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:21:16,510 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:21:16,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:21:16,611 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 08:21:16,613 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:21:16 BoogieIcfgContainer [2021-06-13 08:21:16,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:21:16,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:21:16,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:21:16,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:21:16,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:21:16" (1/2) ... [2021-06-13 08:21:16,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2554a6 and model type ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:21:16, skipping insertion in model container [2021-06-13 08:21:16,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:21:16" (2/2) ... [2021-06-13 08:21:16,621 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure02.bpl [2021-06-13 08:21:16,625 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:21:16,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:21:16,626 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:21:16,646 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:21:16,646 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:21:16,647 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:21:16,647 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:21:16,650 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:21:16,656 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:21:16,662 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:21:16,664 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 08:21:16,682 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 08:21:16,700 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:21:16,700 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:21:16,701 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:21:16,701 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:21:16,701 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:21:16,701 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:21:16,701 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:21:16,701 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooThread1of1ForFork1======== [2021-06-13 08:21:16,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,721 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-13 08:21:16,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 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. [2021-06-13 08:21:16,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 08:21:16,725 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 08:21:16,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,726 INFO L301 ceAbstractionStarter]: Result for error location fooThread1of1ForFork1 was SAFE (1/5) [2021-06-13 08:21:16,727 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 08:21:16,730 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:21:16,730 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:21:16,730 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:21:16,731 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:21:16,731 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:21:16,731 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:21:16,731 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:21:16,731 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == bar======== [2021-06-13 08:21:16,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,736 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-13 08:21:16,736 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 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. [2021-06-13 08:21:16,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 08:21:16,737 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 08:21:16,737 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,737 INFO L301 ceAbstractionStarter]: Result for error location bar was SAFE (2/5) [2021-06-13 08:21:16,737 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 08:21:16,739 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:21:16,740 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:21:16,740 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:21:16,740 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:21:16,740 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:21:16,740 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:21:16,740 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:21:16,740 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == foo======== [2021-06-13 08:21:16,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,744 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-13 08:21:16,744 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 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. [2021-06-13 08:21:16,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 08:21:16,745 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 08:21:16,745 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,745 INFO L301 ceAbstractionStarter]: Result for error location foo was SAFE (3/5) [2021-06-13 08:21:16,745 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 08:21:16,747 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:21:16,747 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:21:16,747 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:21:16,747 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:21:16,747 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:21:16,747 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:21:16,748 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:21:16,748 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:21:16,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,751 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-13 08:21:16,751 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 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. [2021-06-13 08:21:16,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 08:21:16,752 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 08:21:16,752 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,752 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/5) [2021-06-13 08:21:16,753 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 08:21:16,754 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:21:16,755 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:21:16,755 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:21:16,755 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:21:16,755 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:21:16,755 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:21:16,755 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:21:16,755 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == barThread1of1ForFork0======== [2021-06-13 08:21:16,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,761 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-13 08:21:16,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 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. [2021-06-13 08:21:16,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 13 transitions, 36 flow [2021-06-13 08:21:16,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 15 places, 8 transitions, 22 flow [2021-06-13 08:21:16,765 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-13 08:21:16,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:21:16,765 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:16,766 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-13 08:21:16,766 INFO L430 AbstractCegarLoop]: === Iteration 1 === [barErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:16,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:16,770 INFO L82 PathProgramCache]: Analyzing trace with hash 43765016, now seen corresponding path program 1 times [2021-06-13 08:21:16,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:16,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722276147] [2021-06-13 08:21:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:16,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:16,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:16,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:16,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:16,916 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-13 08:21:16,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:16,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:16,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722276147] [2021-06-13 08:21:16,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722276147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:16,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:16,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:21:16,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519527444] [2021-06-13 08:21:16,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 08:21:16,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:16,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 08:21:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 08:21:16,961 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 13 [2021-06-13 08:21:16,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 8 transitions, 22 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:16,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:16,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 13 [2021-06-13 08:21:16,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:17,032 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-13 08:21:17,032 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 08:21:17,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-13 08:21:17,033 INFO L132 encePairwiseOnDemand]: 9/13 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-06-13 08:21:17,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 7 transitions, 26 flow [2021-06-13 08:21:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 08:21:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 08:21:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2021-06-13 08:21:17,041 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2021-06-13 08:21:17,041 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 44 transitions. [2021-06-13 08:21:17,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 44 transitions. [2021-06-13 08:21:17,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:17,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 44 transitions. [2021-06-13 08:21:17,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:17,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:17,049 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:17,050 INFO L185 Difference]: Start difference. First operand has 15 places, 8 transitions, 22 flow. Second operand 5 states and 44 transitions. [2021-06-13 08:21:17,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 7 transitions, 26 flow [2021-06-13 08:21:17,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 7 transitions, 24 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 08:21:17,053 INFO L241 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2021-06-13 08:21:17,055 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2021-06-13 08:21:17,055 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 1 predicate places. [2021-06-13 08:21:17,055 INFO L482 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2021-06-13 08:21:17,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:17,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:21:17,056 INFO L301 ceAbstractionStarter]: Result for error location barThread1of1ForFork0 was SAFE (5/5) [2021-06-13 08:21:17,057 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:21:17,060 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:21:17 BasicIcfg [2021-06-13 08:21:17,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:21:17,061 INFO L168 Benchmark]: Toolchain (without parser) took 667.52 ms. Allocated memory is still 179.3 MB. Free memory was 160.2 MB in the beginning and 151.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-06-13 08:21:17,061 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 179.3 MB. Free memory is still 161.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:21:17,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.45 ms. Allocated memory is still 179.3 MB. Free memory was 160.2 MB in the beginning and 158.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:21:17,063 INFO L168 Benchmark]: Boogie Preprocessor took 11.25 ms. Allocated memory is still 179.3 MB. Free memory was 158.7 MB in the beginning and 157.7 MB in the end (delta: 950.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:21:17,063 INFO L168 Benchmark]: RCFGBuilder took 181.53 ms. Allocated memory is still 179.3 MB. Free memory was 157.7 MB in the beginning and 149.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-06-13 08:21:17,064 INFO L168 Benchmark]: TraceAbstraction took 443.86 ms. Allocated memory is still 179.3 MB. Free memory was 148.4 MB in the beginning and 151.8 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:21:17,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 179.3 MB. Free memory is still 161.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.45 ms. Allocated memory is still 179.3 MB. Free memory was 160.2 MB in the beginning and 158.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.25 ms. Allocated memory is still 179.3 MB. Free memory was 158.7 MB in the beginning and 157.7 MB in the end (delta: 950.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 181.53 ms. Allocated memory is still 179.3 MB. Free memory was 157.7 MB in the beginning and 149.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 443.86 ms. Allocated memory is still 179.3 MB. Free memory was 148.4 MB in the beginning and 151.8 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: fooThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 29.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.3ms, 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: bar with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 7.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.2ms, 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: foo with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 6.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.2ms, 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.1ms, 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: barThread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 302.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 99.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 3.1ms SsaConstructionTime, 15.7ms SatisfiabilityAnalysisTime, 101.7ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...