/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-08 13:14:31,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-08 13:14:31,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-08 13:14:31,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-08 13:14:31,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-08 13:14:31,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-08 13:14:31,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-08 13:14:31,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-08 13:14:31,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-08 13:14:31,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-08 13:14:31,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-08 13:14:31,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-08 13:14:31,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-08 13:14:31,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-08 13:14:31,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-08 13:14:31,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-08 13:14:31,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-08 13:14:31,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-08 13:14:31,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-08 13:14:31,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-08 13:14:31,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-08 13:14:31,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-08 13:14:31,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-08 13:14:31,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-08 13:14:31,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-08 13:14:31,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-08 13:14:31,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-08 13:14:31,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-08 13:14:31,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-08 13:14:31,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-08 13:14:31,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-08 13:14:31,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-08 13:14:31,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-08 13:14:31,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-08 13:14:31,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-08 13:14:31,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-08 13:14:31,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-08 13:14:31,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-08 13:14:31,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-08 13:14:31,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-08 13:14:31,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-08 13:14:31,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-08 13:14:31,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-08 13:14:31,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-08 13:14:31,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-08 13:14:31,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-08 13:14:31,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-08 13:14:31,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-08 13:14:31,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-08 13:14:31,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-08 13:14:31,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-08 13:14:31,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-08 13:14:31,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-08 13:14:31,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-08 13:14:31,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-08 13:14:31,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-08 13:14:31,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-08 13:14:31,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-08 13:14:31,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-08 13:14:31,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-08 13:14:31,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-08 13:14:31,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-08 13:14:31,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-08 13:14:31,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-08 13:14:31,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-08 13:14:31,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-08 13:14:31,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-08 13:14:32,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-08 13:14:32,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-08 13:14:32,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-08 13:14:32,058 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-10-08 13:14:32,058 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-10-08 13:14:32,060 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=11.bpl [2020-10-08 13:14:32,061 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=11.bpl' [2020-10-08 13:14:32,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-08 13:14:32,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-08 13:14:32,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-08 13:14:32,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-08 13:14:32,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-08 13:14:32,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-08 13:14:32,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-08 13:14:32,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-08 13:14:32,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-08 13:14:32,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/1) ... [2020-10-08 13:14:32,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-08 13:14:32,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-08 13:14:32,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-08 13:14:32,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-08 13:14:32,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (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 [2020-10-08 13:14:32,260 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-10-08 13:14:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-08 13:14:32,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-08 13:14:32,262 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-10-08 13:14:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-08 13:14:32,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-08 13:14:32,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-10-08 13:14:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-10-08 13:14:32,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-10-08 13:14:32,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-10-08 13:14:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-08 13:14:32,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-08 13:14:32,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-10-08 13:14:32,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-10-08 13:14:32,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-10-08 13:14:32,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-10-08 13:14:32,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-10-08 13:14:32,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-10-08 13:14:32,266 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread10 given in one single declaration [2020-10-08 13:14:32,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread10 [2020-10-08 13:14:32,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread10 [2020-10-08 13:14:32,267 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2020-10-08 13:14:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2020-10-08 13:14:32,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2020-10-08 13:14:32,268 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2020-10-08 13:14:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2020-10-08 13:14:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2020-10-08 13:14:32,271 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2020-10-08 13:14:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2020-10-08 13:14:32,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2020-10-08 13:14:32,271 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread11 given in one single declaration [2020-10-08 13:14:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread11 [2020-10-08 13:14:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure thread11 [2020-10-08 13:14:32,272 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2020-10-08 13:14:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2020-10-08 13:14:32,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2020-10-08 13:14:32,275 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-08 13:14:32,522 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-08 13:14:32,522 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-08 13:14:32,524 INFO L202 PluginConnector]: Adding new model example2_N=11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 01:14:32 BoogieIcfgContainer [2020-10-08 13:14:32,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-08 13:14:32,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-08 13:14:32,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-08 13:14:32,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-08 13:14:32,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 08.10 01:14:32" (1/2) ... [2020-10-08 13:14:32,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72933211 and model type example2_N=11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 01:14:32, skipping insertion in model container [2020-10-08 13:14:32,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 01:14:32" (2/2) ... [2020-10-08 13:14:32,534 INFO L111 eAbstractionObserver]: Analyzing ICFG example2_N=11.bpl [2020-10-08 13:14:32,549 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-08 13:14:32,550 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-08 13:14:32,560 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-08 13:14:32,562 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-08 13:14:32,819 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-08 13:14:32,842 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-08 13:14:32,843 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-08 13:14:32,843 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-08 13:14:32,843 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-08 13:14:32,843 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-08 13:14:32,843 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-08 13:14:32,843 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-08 13:14:32,844 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-08 13:14:32,860 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-08 13:14:32,863 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 70 transitions, 228 flow [2020-10-08 13:14:32,866 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 70 transitions, 228 flow [2020-10-08 13:14:32,868 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 70 transitions, 228 flow [2020-10-08 13:14:32,920 INFO L129 PetriNetUnfolder]: 11/59 cut-off events. [2020-10-08 13:14:32,920 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-10-08 13:14:32,929 INFO L80 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 59 events. 11/59 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2020-10-08 13:14:32,933 INFO L117 LiptonReduction]: Number of co-enabled transitions 1650 [2020-10-08 13:14:33,429 INFO L132 LiptonReduction]: Checked pairs total: 2530 [2020-10-08 13:14:33,430 INFO L134 LiptonReduction]: Total number of compositions: 2 [2020-10-08 13:14:33,438 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 68 transitions, 224 flow [2020-10-08 13:19:11,250 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 265723 states. [2020-10-08 13:19:11,252 INFO L276 IsEmpty]: Start isEmpty. Operand 265723 states. [2020-10-08 13:19:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-08 13:19:19,770 INFO L413 BasicCegarLoop]: Found error trace [2020-10-08 13:19:19,772 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-08 13:19:19,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-10-08 13:19:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-08 13:19:19,778 INFO L82 PathProgramCache]: Analyzing trace with hash 319940496, now seen corresponding path program 1 times [2020-10-08 13:19:19,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-08 13:19:19,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823706432] [2020-10-08 13:19:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-08 13:19:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-08 13:19:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-08 13:19:20,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823706432] [2020-10-08 13:19:20,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-08 13:19:20,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-08 13:19:20,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922662383] [2020-10-08 13:19:20,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-08 13:19:20,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-08 13:19:20,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-08 13:19:20,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-08 13:19:20,030 INFO L87 Difference]: Start difference. First operand 265723 states. Second operand 3 states. [2020-10-08 13:19:33,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-08 13:19:33,893 INFO L93 Difference]: Finished difference Result 265722 states and 2849117 transitions. [2020-10-08 13:19:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-08 13:19:33,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-08 13:19:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-08 13:19:33,902 INFO L225 Difference]: With dead ends: 265722 [2020-10-08 13:19:33,902 INFO L226 Difference]: Without dead ends: 0 [2020-10-08 13:19:33,903 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-08 13:19:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-08 13:19:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-08 13:19:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-08 13:19:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-08 13:19:33,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-08 13:19:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-08 13:19:33,927 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-08 13:19:33,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-08 13:19:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-08 13:19:33,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-08 13:19:33,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-08 13:19:33,932 INFO L202 PluginConnector]: Adding new model example2_N=11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 01:19:33 BasicIcfg [2020-10-08 13:19:33,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-08 13:19:33,935 INFO L168 Benchmark]: Toolchain (without parser) took 301813.04 ms. Allocated memory was 250.6 MB in the beginning and 4.8 GB in the end (delta: 4.6 GB). Free memory was 227.0 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.9 GB. Max. memory is 14.2 GB. [2020-10-08 13:19:33,936 INFO L168 Benchmark]: Boogie PL CUP Parser took 1.71 ms. Allocated memory is still 250.6 MB. Free memory is still 227.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-08 13:19:33,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.49 ms. Allocated memory is still 250.6 MB. Free memory was 227.0 MB in the beginning and 225.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-08 13:19:33,938 INFO L168 Benchmark]: Boogie Preprocessor took 26.17 ms. Allocated memory is still 250.6 MB. Free memory was 225.3 MB in the beginning and 223.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-08 13:19:33,938 INFO L168 Benchmark]: RCFGBuilder took 338.30 ms. Allocated memory is still 250.6 MB. Free memory was 223.5 MB in the beginning and 206.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 14.2 GB. [2020-10-08 13:19:33,940 INFO L168 Benchmark]: TraceAbstraction took 301406.24 ms. Allocated memory was 250.6 MB in the beginning and 4.8 GB in the end (delta: 4.6 GB). Free memory was 205.4 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.9 GB. Max. memory is 14.2 GB. [2020-10-08 13:19:33,943 INFO L336 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 1.71 ms. Allocated memory is still 250.6 MB. Free memory is still 227.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 37.49 ms. Allocated memory is still 250.6 MB. Free memory was 227.0 MB in the beginning and 225.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.17 ms. Allocated memory is still 250.6 MB. Free memory was 225.3 MB in the beginning and 223.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 338.30 ms. Allocated memory is still 250.6 MB. Free memory was 223.5 MB in the beginning and 206.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 301406.24 ms. Allocated memory was 250.6 MB in the beginning and 4.8 GB in the end (delta: 4.6 GB). Free memory was 205.4 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.9 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 672 VarBasedMoverChecksPositive, 70 VarBasedMoverChecksNegative, 41 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 683 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.5s, 93 PlacesBefore, 91 PlacesAfterwards, 70 TransitionsBefore, 68 TransitionsAfterwards, 1650 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2530 MoverChecksTotal - PositiveResult [Line: 32]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 301.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 278.4s, HoareTripleCheckerStatistics: 34 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 22 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265723occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 3468 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...