/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example1.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:20:30,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:20:30,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:20:30,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:20:30,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:20:30,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:20:30,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:20:30,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:20:30,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:20:30,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:20:30,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:20:30,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 22:20:30,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:20:30,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:20:30,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:20:30,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:20:30,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:20:30,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:20:30,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:20:30,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:20:30,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:20:30,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:20:30,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:20:30,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:20:30,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 22:20:30,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 22:20:30,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 22:20:30,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 22:20:30,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 22:20:30,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 22:20:30,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 22:20:31,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 22:20:31,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 22:20:31,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 22:20:31,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 22:20:31,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 22:20:31,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 22:20:31,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 22:20:31,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:20:31,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:20:31,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:20:31,008 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-SemanticLbe.epf [2021-03-24 22:20:31,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:20:31,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:20:31,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:20:31,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:20:31,046 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:20:31,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:20:31,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:20:31,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:20:31,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:20:31,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:20:31,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:20:31,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:20:31,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:20:31,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:20:31,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:20:31,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:20:31,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:20:31,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:20:31,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:20:31,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:20:31,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:20:31,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:20:31,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:20:31,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:20:31,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:20:31,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:20:31,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:20:31,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:20:31,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:20:31,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:20:31,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:20:31,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:20:31,380 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:20:31,384 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:20:31,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl [2021-03-24 22:20:31,385 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl' [2021-03-24 22:20:31,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:20:31,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:20:31,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:20:31,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:20:31,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:20:31,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:20:31,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:20:31,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:20:31,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:20:31,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... [2021-03-24 22:20:31,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:20:31,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:20:31,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:20:31,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:20:31,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:20:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-24 22:20:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-24 22:20:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:20:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:20:31,504 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:20:31,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:20:31,589 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:20:31,591 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:20:31 BoogieIcfgContainer [2021-03-24 22:20:31,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:20:31,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:20:31,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:20:31,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:20:31,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:31" (1/2) ... [2021-03-24 22:20:31,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8ee5eb and model type example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:20:31, skipping insertion in model container [2021-03-24 22:20:31,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:20:31" (2/2) ... [2021-03-24 22:20:31,597 INFO L111 eAbstractionObserver]: Analyzing ICFG example1.bpl [2021-03-24 22:20:31,602 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:20:31,605 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:20:31,606 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:20:31,627 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-24 22:20:31,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-24 22:20:31,675 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:20:31,675 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:20:31,675 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:20:31,675 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:20:31,675 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:20:31,676 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:20:31,676 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:20:31,676 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:20:31,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 15 places, 11 transitions, 30 flow [2021-03-24 22:20:31,705 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-24 22:20:31,706 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:20:31,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 10 events. 0/10 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:20:31,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 15 places, 11 transitions, 30 flow [2021-03-24 22:20:31,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 12 places, 8 transitions, 22 flow [2021-03-24 22:20:31,712 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:20:31,727 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 12 places, 8 transitions, 22 flow [2021-03-24 22:20:31,734 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 12 places, 8 transitions, 22 flow [2021-03-24 22:20:31,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 8 transitions, 22 flow [2021-03-24 22:20:31,741 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-24 22:20:31,743 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:20:31,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 8 events. 0/8 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:20:31,747 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-24 22:20:31,818 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-24 22:20:31,818 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-24 22:20:31,820 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 109 [2021-03-24 22:20:31,827 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-24 22:20:31,828 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:20:31,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:20:31,829 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 22:20:31,829 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:20:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:20:31,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1281515411, now seen corresponding path program 1 times [2021-03-24 22:20:31,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:20:31,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279198093] [2021-03-24 22:20:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:20:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 22:20:31,916 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 22:20:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 22:20:31,925 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 22:20:31,941 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 22:20:31,941 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 22:20:31,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:20:31,952 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:20:31 BasicIcfg [2021-03-24 22:20:31,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:20:31,955 INFO L168 Benchmark]: Toolchain (without parser) took 551.96 ms. Allocated memory is still 352.3 MB. Free memory was 332.7 MB in the beginning and 329.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:31,956 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 352.3 MB. Free memory was 333.7 MB in the beginning and 333.7 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:20:31,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.14 ms. Allocated memory is still 352.3 MB. Free memory was 332.7 MB in the beginning and 331.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:31,959 INFO L168 Benchmark]: Boogie Preprocessor took 9.91 ms. Allocated memory is still 352.3 MB. Free memory was 331.2 MB in the beginning and 330.4 MB in the end (delta: 827.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:20:31,959 INFO L168 Benchmark]: RCFGBuilder took 152.00 ms. Allocated memory is still 352.3 MB. Free memory was 330.3 MB in the beginning and 322.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:31,960 INFO L168 Benchmark]: TraceAbstraction took 360.35 ms. Allocated memory is still 352.3 MB. Free memory was 322.0 MB in the beginning and 329.6 MB in the end (delta: -7.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:20:31,966 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 352.3 MB. Free memory was 333.7 MB in the beginning and 333.7 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.14 ms. Allocated memory is still 352.3 MB. Free memory was 332.7 MB in the beginning and 331.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.91 ms. Allocated memory is still 352.3 MB. Free memory was 331.2 MB in the beginning and 330.4 MB in the end (delta: 827.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 152.00 ms. Allocated memory is still 352.3 MB. Free memory was 330.3 MB in the beginning and 322.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 360.35 ms. Allocated memory is still 352.3 MB. Free memory was 322.0 MB in the beginning and 329.6 MB in the end (delta: -7.6 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: 85.0ms, 12 PlacesBefore, 10 PlacesAfterwards, 8 TransitionsBefore, 6 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , 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 - CounterExampleResult [Line: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L20] 0 x := 1; VAL [x=1] [L21] FORK 0 fork 1 foo(); VAL [x=1] [L22] 0 n := 2; VAL [n=2, x=1] [L34] 1 n := 1; [L24] JOIN 1 join x; VAL [n=1, x=1] [L25] 0 x := 4; [L26] 0 assert false; VAL [n=1, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 270.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 149.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: 2.7ms SsaConstructionTime, 28.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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...