/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:37:56,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:37:56,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:37:56,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:37:56,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:37:56,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:37:56,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:37:56,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:37:56,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:37:56,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:37:56,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:37:56,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:37:56,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:37:56,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:37:56,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:37:56,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:37:56,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:37:56,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:37:56,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:37:56,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:37:56,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:37:56,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:37:56,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:37:56,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:37:56,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 14:37:56,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 14:37:56,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 14:37:56,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 14:37:56,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 14:37:56,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 14:37:56,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 14:37:56,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 14:37:56,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 14:37:56,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:37:56,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:37:56,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:37:56,419 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 [2021-06-10 14:37:56,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:37:56,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:37:56,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:37:56,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:37:56,447 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:37:56,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:37:56,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:37:56,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:37:56,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:37:56,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:37:56,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:37:56,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:37:56,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:37:56,448 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:37:56,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:37:56,448 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:37:56,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:37:56,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:37:56,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:37:56,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:37:56,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:37:56,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:37:56,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:37:56,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:37:56,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:37:56,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:37:56,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:37:56,450 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:37:56,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:37:56,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:37:56,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:37:56,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:37:56,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:37:56,689 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:37:56,689 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:37:56,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl [2021-06-10 14:37:56,690 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl' [2021-06-10 14:37:56,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:37:56,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:37:56,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:37:56,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:37:56,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:37:56,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:37:56,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:37:56,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:37:56,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:37:56,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/1) ... [2021-06-10 14:37:56,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:37:56,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:37:56,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:37:56,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:37:56,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (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 [2021-06-10 14:37:56,791 INFO L124 BoogieDeclarations]: Specification and implementation of procedure increment given in one single declaration [2021-06-10 14:37:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-06-10 14:37:56,792 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-06-10 14:37:56,793 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:37:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:37:56,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:37:56,793 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:37:56,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:37:56,901 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 14:37:56,902 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:37:56 BoogieIcfgContainer [2021-06-10 14:37:56,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:37:56,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:37:56,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:37:56,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:37:56,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:37:56" (1/2) ... [2021-06-10 14:37:56,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513f8c1b and model type multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:37:56, skipping insertion in model container [2021-06-10 14:37:56,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:37:56" (2/2) ... [2021-06-10 14:37:56,908 INFO L111 eAbstractionObserver]: Analyzing ICFG multiple_fork_same_id.bpl [2021-06-10 14:37:56,914 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:37:56,916 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 14:37:56,917 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:37:56,941 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,942 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,944 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,945 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,946 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,946 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,947 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,947 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,947 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,947 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,948 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,948 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,951 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,956 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,960 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:37:56,981 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-10 14:37:56,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 14:37:57,021 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:37:57,021 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:37:57,021 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:37:57,021 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:37:57,021 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:37:57,021 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:37:57,021 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:37:57,021 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:37:57,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 18 transitions, 60 flow [2021-06-10 14:37:57,051 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-06-10 14:37:57,051 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-10 14:37:57,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 0/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 46 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-10 14:37:57,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 18 transitions, 60 flow [2021-06-10 14:37:57,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 13 transitions, 44 flow [2021-06-10 14:37:57,064 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-10 14:37:57,064 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-10 14:37:57,064 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:37:57,065 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:37:57,065 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 14:37:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:37:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1047289434, now seen corresponding path program 1 times [2021-06-10 14:37:57,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:37:57,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296415239] [2021-06-10 14:37:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:37:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 14:37:57,141 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 14:37:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 14:37:57,152 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 14:37:57,164 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-10 14:37:57,165 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-10 14:37:57,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:37:57,174 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 02:37:57 BasicIcfg [2021-06-10 14:37:57,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 14:37:57,177 INFO L168 Benchmark]: Toolchain (without parser) took 472.38 ms. Allocated memory is still 333.4 MB. Free memory was 313.5 MB in the beginning and 312.9 MB in the end (delta: 598.5 kB). Peak memory consumption was 2.5 MB. Max. memory is 16.0 GB. [2021-06-10 14:37:57,178 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 333.4 MB. Free memory was 314.4 MB in the beginning and 314.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:37:57,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.05 ms. Allocated memory is still 333.4 MB. Free memory was 313.3 MB in the beginning and 312.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:37:57,179 INFO L168 Benchmark]: Boogie Preprocessor took 7.76 ms. Allocated memory is still 333.4 MB. Free memory was 312.0 MB in the beginning and 311.1 MB in the end (delta: 885.7 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-10 14:37:57,181 INFO L168 Benchmark]: RCFGBuilder took 174.14 ms. Allocated memory is still 333.4 MB. Free memory was 311.1 MB in the beginning and 302.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-06-10 14:37:57,181 INFO L168 Benchmark]: TraceAbstraction took 270.98 ms. Allocated memory is still 333.4 MB. Free memory was 302.3 MB in the beginning and 312.9 MB in the end (delta: -10.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:37:57,184 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 0.10 ms. Allocated memory is still 333.4 MB. Free memory was 314.4 MB in the beginning and 314.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 16.05 ms. Allocated memory is still 333.4 MB. Free memory was 313.3 MB in the beginning and 312.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 7.76 ms. Allocated memory is still 333.4 MB. Free memory was 312.0 MB in the beginning and 311.1 MB in the end (delta: 885.7 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 174.14 ms. Allocated memory is still 333.4 MB. Free memory was 311.1 MB in the beginning and 302.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 270.98 ms. Allocated memory is still 333.4 MB. Free memory was 302.3 MB in the beginning and 312.9 MB in the end (delta: -10.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L19] FORK 0 fork 42 increment(7); VAL [n=7] [L20] FORK 0 fork 42 increment(23); VAL [n=7] [L34] 2 res := n + 1; VAL [n=7, res=24] [L21] FORK 0 fork 42 increment(39); VAL [n=39, res=24] [L24] JOIN 2 join 42 assign x; VAL [n=39, res=24, x=24] [L28] 0 assert x == 8 || x == 40; VAL [n=39, res=24, x=24] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 147.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: TRACE_CHECK: 4.4ms SsaConstructionTime, 14.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...