/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example1.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:15:59,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:15:59,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:15:59,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:15:59,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:15:59,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:15:59,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:15:59,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:15:59,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:15:59,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:15:59,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:15:59,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:15:59,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:15:59,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:15:59,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:15:59,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:15:59,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:15:59,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:15:59,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:15:59,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:15:59,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:15:59,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:15:59,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:15:59,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:15:59,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 14:15:59,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 14:15:59,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 14:15:59,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 14:15:59,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 14:15:59,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 14:15:59,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 14:15:59,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 14:15:59,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 14:15:59,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:15:59,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:15:59,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:15:59,755 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-FA-SemanticLbe.epf [2021-03-11 14:15:59,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:15:59,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:15:59,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:15:59,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:15:59,786 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:15:59,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:15:59,786 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:15:59,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:15:59,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:15:59,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:15:59,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:15:59,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:15:59,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:15:59,787 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:15:59,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:15:59,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:15:59,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:15:59,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:15:59,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:15:59,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:15:59,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:15:59,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:15:59,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:15:59,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:15:59,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:15:59,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:15:59,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:15:59,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:15:59,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:16:00,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:16:00,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:16:00,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:16:00,062 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 14:16:00,062 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 14:16:00,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl [2021-03-11 14:16:00,063 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example1.bpl' [2021-03-11 14:16:00,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:16:00,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 14:16:00,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:16:00,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:16:00,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:16:00,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:16:00,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:16:00,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:16:00,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:16:00,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/1) ... [2021-03-11 14:16:00,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:16:00,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:16:00,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:16:00,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:16:00,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (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 [2021-03-11 14:16:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-11 14:16:00,190 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-11 14:16:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:16:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:16:00,192 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:16:00,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:16:00,279 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 14:16:00,280 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:16:00 BoogieIcfgContainer [2021-03-11 14:16:00,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:16:00,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:16:00,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:16:00,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:16:00,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:00" (1/2) ... [2021-03-11 14:16:00,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf47189 and model type example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:16:00, skipping insertion in model container [2021-03-11 14:16:00,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:16:00" (2/2) ... [2021-03-11 14:16:00,285 INFO L111 eAbstractionObserver]: Analyzing ICFG example1.bpl [2021-03-11 14:16:00,288 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:16:00,289 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:16:00,291 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:16:00,291 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:16:00,309 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-11 14:16:00,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 14:16:00,351 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:16:00,352 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:16:00,352 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:16:00,352 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:16:00,352 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:16:00,352 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:16:00,352 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:16:00,352 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:16:00,361 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:16:00,370 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 15 places, 11 transitions, 30 flow [2021-03-11 14:16:00,374 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 15 places, 11 transitions, 30 flow [2021-03-11 14:16:00,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 15 places, 11 transitions, 30 flow [2021-03-11 14:16:00,389 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-11 14:16:00,390 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 14:16:00,391 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. [2021-03-11 14:16:00,394 INFO L116 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-11 14:16:00,445 INFO L131 LiptonReduction]: Checked pairs total: 8 [2021-03-11 14:16:00,445 INFO L133 LiptonReduction]: Total number of compositions: 4 [2021-03-11 14:16:00,455 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 8 transitions, 24 flow [2021-03-11 14:16:00,459 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-03-11 14:16:00,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-03-11 14:16:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 14:16:00,463 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:16:00,463 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 14:16:00,463 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:16:00,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:16:00,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1281514452, now seen corresponding path program 1 times [2021-03-11 14:16:00,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:16:00,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972093157] [2021-03-11 14:16:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:16:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 14:16:00,556 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 14:16:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 14:16:00,560 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 14:16:00,570 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 14:16:00,570 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 14:16:00,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:16:00,587 INFO L202 PluginConnector]: Adding new model example1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:16:00 BasicIcfg [2021-03-11 14:16:00,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:16:00,590 INFO L168 Benchmark]: Toolchain (without parser) took 496.73 ms. Allocated memory is still 255.9 MB. Free memory was 236.9 MB in the beginning and 223.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:00,590 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:16:00,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.97 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:00,592 INFO L168 Benchmark]: Boogie Preprocessor took 10.54 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 837.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:16:00,593 INFO L168 Benchmark]: RCFGBuilder took 155.89 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 226.5 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:00,593 INFO L168 Benchmark]: TraceAbstraction took 305.53 ms. Allocated memory is still 255.9 MB. Free memory was 226.1 MB in the beginning and 223.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:00,598 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 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.97 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.54 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 837.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 155.89 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 226.5 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 305.53 ms. Allocated memory is still 255.9 MB. Free memory was 226.1 MB in the beginning and 223.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 70.9ms, 15 PlacesBefore, 12 PlacesAfterwards, 11 TransitionsBefore, 8 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 8 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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. VerificationResult: UNSAFE, OverallTime: 220.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 3.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 106.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: 2.6ms SsaConstructionTime, 9.4ms 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...