/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 0.1.25-50b6972 [2020-10-06 18:21:40,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 18:21:40,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 18:21:40,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 18:21:40,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 18:21:40,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 18:21:40,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 18:21:40,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 18:21:40,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 18:21:40,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 18:21:40,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 18:21:40,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 18:21:40,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 18:21:40,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 18:21:40,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 18:21:40,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 18:21:40,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 18:21:40,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 18:21:40,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 18:21:40,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 18:21:40,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 18:21:40,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 18:21:40,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 18:21:40,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 18:21:40,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 18:21:40,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 18:21:40,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 18:21:40,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 18:21:40,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 18:21:40,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 18:21:40,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 18:21:40,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 18:21:40,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 18:21:40,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 18:21:40,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 18:21:40,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 18:21:40,320 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 [2020-10-06 18:21:40,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 18:21:40,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 18:21:40,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 18:21:40,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 18:21:40,360 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 18:21:40,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 18:21:40,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 18:21:40,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 18:21:40,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 18:21:40,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 18:21:40,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 18:21:40,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 18:21:40,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 18:21:40,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 18:21:40,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 18:21:40,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 18:21:40,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 18:21:40,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 18:21:40,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 18:21:40,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 18:21:40,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 18:21:40,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 18:21:40,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 18:21:40,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-06 18:21:40,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 18:21:40,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 18:21:40,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 18:21:40,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 18:21:40,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-06 18:21:40,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-06 18:21:40,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 18:21:40,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 18:21:40,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 18:21:40,688 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-10-06 18:21:40,688 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-10-06 18:21:40,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=11.bpl [2020-10-06 18:21:40,689 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=11.bpl' [2020-10-06 18:21:40,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 18:21:40,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-06 18:21:40,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 18:21:40,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 18:21:40,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 18:21:40,744 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 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,754 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 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 18:21:40,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 18:21:40,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 18:21:40,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 18:21:40,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (1/1) ... [2020-10-06 18:21:40,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 18:21:40,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 18:21:40,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 18:21:40,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 18:21:40,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (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 [2020-10-06 18:21:40,863 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-10-06 18:21:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-06 18:21:40,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-06 18:21:40,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-10-06 18:21:40,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-06 18:21:40,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-06 18:21:40,864 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-10-06 18:21:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-10-06 18:21:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-10-06 18:21:40,865 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-10-06 18:21:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 18:21:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 18:21:40,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-10-06 18:21:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-10-06 18:21:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-10-06 18:21:40,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-10-06 18:21:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-10-06 18:21:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-10-06 18:21:40,867 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread10 given in one single declaration [2020-10-06 18:21:40,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread10 [2020-10-06 18:21:40,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread10 [2020-10-06 18:21:40,867 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2020-10-06 18:21:40,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2020-10-06 18:21:40,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2020-10-06 18:21:40,868 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2020-10-06 18:21:40,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2020-10-06 18:21:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2020-10-06 18:21:40,870 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2020-10-06 18:21:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2020-10-06 18:21:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2020-10-06 18:21:40,871 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread11 given in one single declaration [2020-10-06 18:21:40,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread11 [2020-10-06 18:21:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread11 [2020-10-06 18:21:40,872 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2020-10-06 18:21:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2020-10-06 18:21:40,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2020-10-06 18:21:40,874 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 18:21:41,231 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 18:21:41,232 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-06 18:21:41,234 INFO L202 PluginConnector]: Adding new model example2_N=11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 06:21:41 BoogieIcfgContainer [2020-10-06 18:21:41,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 18:21:41,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 18:21:41,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 18:21:41,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 18:21:41,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.10 06:21:40" (1/2) ... [2020-10-06 18:21:41,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33814376 and model type example2_N=11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 06:21:41, skipping insertion in model container [2020-10-06 18:21:41,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 06:21:41" (2/2) ... [2020-10-06 18:21:41,242 INFO L111 eAbstractionObserver]: Analyzing ICFG example2_N=11.bpl [2020-10-06 18:21:41,257 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 18:21:41,258 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-06 18:21:41,266 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 18:21:41,267 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 18:21:41,417 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-06 18:21:41,438 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-06 18:21:41,438 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-06 18:21:41,438 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-06 18:21:41,438 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-06 18:21:41,438 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 18:21:41,439 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-06 18:21:41,439 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 18:21:41,439 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 18:21:41,455 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-06 18:21:41,458 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 70 transitions, 228 flow [2020-10-06 18:21:41,460 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 70 transitions, 228 flow [2020-10-06 18:21:41,462 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 70 transitions, 228 flow [2020-10-06 18:21:41,516 INFO L129 PetriNetUnfolder]: 11/59 cut-off events. [2020-10-06 18:21:41,516 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-10-06 18:21:41,525 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. [2020-10-06 18:21:41,529 INFO L117 LiptonReduction]: Number of co-enabled transitions 1650 [2020-10-06 18:21:42,162 INFO L132 LiptonReduction]: Checked pairs total: 2530 [2020-10-06 18:21:42,162 INFO L134 LiptonReduction]: Total number of compositions: 2 [2020-10-06 18:21:42,170 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 68 transitions, 224 flow [2020-10-06 18:26:18,487 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 265723 states. [2020-10-06 18:26:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 265723 states. [2020-10-06 18:26:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 18:26:19,828 INFO L413 BasicCegarLoop]: Found error trace [2020-10-06 18:26:19,829 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] [2020-10-06 18:26:19,829 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]=== [2020-10-06 18:26:19,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 18:26:19,835 INFO L82 PathProgramCache]: Analyzing trace with hash 319940496, now seen corresponding path program 1 times [2020-10-06 18:26:19,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 18:26:19,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737458484] [2020-10-06 18:26:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 18:26:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 18:26:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 18:26:20,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737458484] [2020-10-06 18:26:20,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 18:26:20,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 18:26:20,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359130418] [2020-10-06 18:26:20,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 18:26:20,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 18:26:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 18:26:20,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 18:26:20,082 INFO L87 Difference]: Start difference. First operand 265723 states. Second operand 3 states. [2020-10-06 18:26:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 18:26:25,426 INFO L93 Difference]: Finished difference Result 265722 states and 2849117 transitions. [2020-10-06 18:26:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 18:26:25,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-06 18:26:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 18:26:25,435 INFO L225 Difference]: With dead ends: 265722 [2020-10-06 18:26:25,435 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 18:26:25,436 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 [2020-10-06 18:26:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 18:26:25,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 18:26:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 18:26:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 18:26:25,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-06 18:26:25,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 18:26:25,461 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 18:26:25,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 18:26:25,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 18:26:25,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 18:26:25,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 18:26:25,465 INFO L202 PluginConnector]: Adding new model example2_N=11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 06:26:25 BasicIcfg [2020-10-06 18:26:25,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 18:26:25,467 INFO L168 Benchmark]: Toolchain (without parser) took 284737.64 ms. Allocated memory was 252.2 MB in the beginning and 4.4 GB in the end (delta: 4.1 GB). Free memory was 228.6 MB in the beginning and 811.0 MB in the end (delta: -582.4 MB). Peak memory consumption was 3.5 GB. Max. memory is 14.2 GB. [2020-10-06 18:26:25,468 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-06 18:26:25,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.42 ms. Allocated memory is still 252.2 MB. Free memory was 228.6 MB in the beginning and 226.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-06 18:26:25,470 INFO L168 Benchmark]: Boogie Preprocessor took 27.00 ms. Allocated memory is still 252.2 MB. Free memory was 226.0 MB in the beginning and 223.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-06 18:26:25,471 INFO L168 Benchmark]: RCFGBuilder took 443.15 ms. Allocated memory is still 252.2 MB. Free memory was 223.5 MB in the beginning and 205.9 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.2 GB. [2020-10-06 18:26:25,472 INFO L168 Benchmark]: TraceAbstraction took 284229.56 ms. Allocated memory was 252.2 MB in the beginning and 4.4 GB in the end (delta: 4.1 GB). Free memory was 205.9 MB in the beginning and 811.0 MB in the end (delta: -605.1 MB). Peak memory consumption was 3.5 GB. Max. memory is 14.2 GB. [2020-10-06 18:26:25,476 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 0.18 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 33.42 ms. Allocated memory is still 252.2 MB. Free memory was 228.6 MB in the beginning and 226.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.00 ms. Allocated memory is still 252.2 MB. Free memory was 226.0 MB in the beginning and 223.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 443.15 ms. Allocated memory is still 252.2 MB. Free memory was 223.5 MB in the beginning and 205.9 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.2 GB. * TraceAbstraction took 284229.56 ms. Allocated memory was 252.2 MB in the beginning and 4.4 GB in the end (delta: 4.1 GB). Free memory was 205.9 MB in the beginning and 811.0 MB in the end (delta: -605.1 MB). Peak memory consumption was 3.5 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: 0.5s, 683 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 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: 284.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 277.0s, 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...